Habenaria brownelliana Catling, Brittonia 39(3): 402. 1987
Belize: near Lagoona, Catling & Brownell B17, early December 1984, Isotype
Habenaria conspicua Nash
U.S.A.: Florida, Lake County, vicinity of Eustis, G.V. Nash 1700, 16-25 Aug. 1894, Paratype
Habenaria conspicua Nash, Bull. Torr. Bot. Club 23: 100. 1896
U.S.A.: Florida, Columbia Co., Lake City, G.V. Nash 2501, 29-31 Aug. 1895, Isotype
Habenaria flava (L.) Br. var. herbiola (R.Br.) Ames & Correll f. lutea Louis-Marie ex Boivin in Catling, Nat. can. 109: 278. 1982
Canada: Ontario, Ottawa District, Ottawa River shoreline, 0.8 miles east of Champlain Bridge, Sherk & Greenwood 547, Holotype
Habenaria herminioides Kränzliv, Kongl. Svenska Vetensk. Handl. 46: 11. 1911
Columbia: Santa Marta, H.H. Smith 2375, 1898-1901, ? Isotype
Habenaria orbiculata (Pursh) Torrey var. lehorsii Fern., Rhod. 52: 61. 1981
Iles Saint-Pierre et Miquleon: Saint-Pierre, Cap à l'Aigle, M. LeHors, 21 juillet 1950, Topotype
Habenaria smithii Schltr., Repert. Spec. Nov. Regini. Beih. 7: 33. 1920
Columbia: Santa Marta, H.H. Smith 2358, 1898-1901, ? Isotype
Hackelia patens (Nutt.) Johnston var. harrisonii J.L. Gentry, Southwest Nat. 19: 140. 1974
U.S.A.: Utah, Washington Co., Dixie National Forest, Pine Valley north of St. George, J.L. Gentry 2002, 30 May 1968, Isotype
Hackelia patens (Nutt.) Johnston var. semiglabra Cronq., Leafl. W. Bot. 10: 39. 1963
U.S.A.: Oregon, Malheur Co., 11 miles southwest of Vale, A. Cronquist 8184, 4 May 1959, Isotype
Hakea nodosa R.Br., Trans. Linn. Soc. London 10: 179-180. 1811
Australia: Port Philip, R. Brown, 1802-5, Isotype
Hakonechloa marra Makino, J. Fac. Sc. Univ. Tokyo, Sec. 3, Bot., 3: 113. 1930
Cultivated: Tokyo, Japan, T. Makino, 29 Sept. 1911, Type Collection Material
Halesia diptera Ellis var. magniflora Godfrey, Rhod. 60: 80. 1958
U.S.A.: Florida, Leon Co., 3 miles east of Tallahassee, R.K. Godfrey 56332, 1 Apr. 1958, Topotype
Halesia tetraptera L., Sp. Pl. ed. 2, 636, 1762; Taxon 25: 134. 1976
U.S.A.: South Carolina, Williamsburg Co., 2.7 miles north of Jamestown, Reveal & Seldin 3832, 6 Apr. 1975, Neotype
Halimium exaltatum Rose & Standl., Contr. U.S. Nat. Herb. 23: 833. 1923
Mexico: Michoacan, Uruapan, C.G. Pringle 10409, 27 Nov. 1907, Isotype
Hamamelis bitchuensis Makino, J. Jap. Bot. 1: 7-8. 1916
Japan: Atetsu, Okayama Pref., T. Makino, 5 Aug. 1914, Isotype
Hamamelis japonica Sieb. & Zucc. var. discolor Hiyama f. obtusata Hiyama, Publication unknown
Japan: Gumma Pref., foot of Mt. Tanigawa, T. Makino, 6 Sept. 1936, ? Type Collection Material
Hamamelis japonica Sieb. & Zucc. f. yoshidai Hiyama, Publication unknown
Japan: Gifu Pref., Gifu City, T. Makino, 1940, ? Type Collection Material
Hamelia pedicellata Wernham, J. Bot. 49: 212. 1911
Columbia: Santa Marta, H.H. Smith 1817, 1898-1901, ? Isotype
Haplopappus arborescens (A. Gray) H.M. Hall ssp. peninsularis Moran, Trans. San Diego Soc. Nat. Hist. 15(11): 152-153. 1969
Mexico: Baja California, Sierra San Pedro Mártir, La Encantada, Wiggins & Demaree 4952, 20 Sept. 1930, Paratype
Haplopappus berberidis Gray, Syn. Fl. N. Am. 1(2): 126. 1884
Mexico: Baja California, Ensenada, L.S. Rose 60077, 22 Aug. 1960, Topotype
Haplopappus lanceolatus (Hook.) T.&G. var. sublanatus Cody
Canada: Alberta, three miles east of Beaverlodge, Jenkins 606, Paratype
Haplopappus lanceolatus (Hook.) T. & G. var. sublanatus Cody, Can. Field-Nat. 70: 126. 1957
Canada: District of Mackenzie, Salt Plain west of Ft. Smith, Cody & Loan 4576, 20 July 1950, Holotype
Haplopappus occidentalis Hall, Carnegie Inst. Wash. Publ. 389: 214. 1928
U.S.A.: California, Fresno Co., north side of Parkfield Grade, R.F. Hoover 6470, 6 Oct. 1946, Topotype
Haplopappus wigginsii Blake, Proc. Biol. Soc. Wash. 48: 169. 1935
Mexico: Baja California, La Encantada, Moran & Thorne 14346, 19 Aug. 1967, Topotype
Haplophyllum khorasanicum Rech. f. Aell. Esf., Anz. Österr. Akad. Wiss. Math.-Nat. 87: 302. 1950
Iran: Khorasan et Shahrud-Bustam, inter Maiomai et Shahrud, K.H. & F. Rechinger, 13-14 June 1948, Isotype
Haronga madagascariensis Choisy, Prod. Mon. Hyper. 34. 1821
Madagascar: Le Myre de Villars, 1887, Topotype
Hasseltia lateriflora Rusby, Descriptions of Three Hundred New Species of South American Plants, p. 62. 1920
Columbia: Santa Marta, H.H. Smith 1915 (1898-1901), ? Isotype
Hedeoma hispida Pursh f. simplex Lalonde, Nat. can. 84: 255. 1957
Canada: Quebec, Pontiac Co., Vinton, P. Louis-Marie 561a, 27 août 1957, Isotype
Hedeoma quinquenervata Bartlett, Proc. Amer. Acad. 44: 634. 1929
Mexico: Nuevo Leon, Sierra Madre above Monterrey, C.G. Pringle 10241, 9 Apr. 1906, ? Type - Publication not Available
Hedyotis acuminata Steud. f. grayana Fosberg, Publication unknown
Hawaiian Islands: Oahu, west branch of Makaleha Valley, Degener et al. 20674, 4 July 1950, ? Type Collection Material
Hedyotis degeneri Fosberg var. coprosumifolia Fosberg, Publication unknown
Hawaiian Islands: Oahu, Kaumokunui Gulch, Degener & Kepaa 12727, 11 Apr. 1940, ? Type Collection Material
Hedyotis interrupta n. sp., Publication unknown
China: Hainan, Yaichow, H.Y. Liang 62576, 14 Aug. 1933, ? Type Collection Material
Hedyotis liangii n. sp., Publication unknown
China: Hainan, C. Wang 35878, 27 Dec. 1933, ? Type Collection Material
Hedyotis schlechtendahliana Steud. f. dichtoma Fosberg, Publication unknown
Hawaiian Islands: Oahu, northeast ridge of Kanehoa, Degener & Ordonez 12733, 14 Apr. 1940, ? Type Collection Material
Hedysarum boreale Nutt. var. cinerascens (Rydb.) Rollins f. album Boivin, Nat. can. 87:34. 1960
Canada: Saskatchewan, Maple Creek District, Eastend, R.C. Russell S5075, 19 July 1950, Holotype
Hedysarum mackenzii Rich. var. fraseri Boivin, Can. Field-Nat. 65: 20. 1951
Canada: Saskatchewan, Langham, W.P. Fraser, 12 & 26 June 1938, Holotype
Hedysarum mackenzii Rich. f. niveum Boivin, Can. Field-Nat. 65: 20. 1951
Canada: Yukon, Pine Creek, J.W. Abbott 17a, 7 June 1946, Holotype
Hedysarum mackenzii Richards. f. proliferum Dore, Can. Field-Nat. 73: 151. 1959
U.S.A.: Alaska, Tanana River, Mile 277 Richardson Highway, W.J. Cody 4984, 3 June 1951, Holotype
Hedysarum obscurum L. ssp. boutignyanum d'Alleiqette, Publication unknown
France: Col de Restefond, Gavelle, 5 Aug. 1964, Topotype
Hedysarum utahense Rydb., Bull. Torrey Bot. Club 34: 424. 1907
U.S.A.: Utah, 3 miles E of Salt Lake City, G.H. Vansell, 2 May 1940, Topotype
Helenium autumnale L. var. canaliculatum (Lam.) T. & G. f. rubrum Boivin, Nat. can. 87: 35. 1960
Cultivated: Central Experimental Farm, Ottawa, Ont. F. Fyles, 13 Sept. 1948, Holotype
Helenium automnale L. var. fylesii Boivin
Canada: Quebec, Lévis, Pont de Quebec, R. Dumais 172, 6 Aug. 1941, Paratype; Hadlow, shore of St. Lawrence River, F. Fyles s.n., 19 Aug. 1913, Paratype; Grosse-Isle, St. Lawrence River, R.P. Hanson 473, 30 July 1943, Paratype; upper tidal flat of St. Lawrence River estuary above Quebec bridge, Dore et al. 47-966, 31 Aug. 1947, Paratype; Neuville, Br. Marie-Anselm s.n., 2 Sept. 1938, Paratype; Cap St-Ignace, L. Cinq-Mars s.n., 9 août 1959, Paratype; Saint-Vallier, Marie-Victorin et al. 44-099, 1 Oct. 1932, Paratype
Helenium autumnale L. var. fylesii Boivin, Nat. can. 87: 35. 1960
Canada: Quebec, Beauport, F. Fyles, 19 Aug. 1913, Holotype
Helenium bigelovii Gray var. festivum Jepson, Man. Fl. Pl. Calif. 1132. 1925
U.S.A.: California, Humboldt Bay, J.P. Tracy 1204, May 1901, Isotype
Heleocharis amphibia Durieu, Act. Soc. Linn. Bord. 21: 487 T2. 1858
France: in ripis fluvi Garonne prope Bordeau, Durieu, 7, 1855, ? Isotype
Heleocharis haumaniana Barros
Argentina: Capital Federal, M. Barros s.n., 15 Nov. 1925, Topotype
Heleocharis haumaniana Barros, Ann. Mus. Hist. Nat. Buenos Aires. 5: 482-484. 1928
Argentina: Capital Federal, M. Barros 179, 15 Nov. 1925, Topotype
Helianthemum nashi Britton, Bull. Torrey Bot. Cl. 22: 147-148. 1895
U.S.A.: Florida, Lake Co., G.V. Nash 815, 16-31 May 1894, Isotype
Helianthemum serpyllifolium Crantz, Stirp. Austr. fasc. 2: 101. 1769
Austria: Montis Schneeberg, Beck, Fl. Ex. Aust.-Hung. 884, Topotype
Helianthus ×alexidis Boivin, Phylotogia 23(1): 73. 1972
Canada: Manitoba, Lisgar District, Thornhill, 1 mile south, J.F. Alex 121, 4 Sept. 1957, Holotype
Helianthus annuus L. f. fallax Boivin
Canada: Manitoba, Lisgar District, 1 to 3 miles west of Morden, J.F. Allex 46, 49, 51, 1 Sept. 1952, Paratypes
Helianthus annuus L. f. fallax Boivin, Nat. can. 87: 35. 1960
Canada: Saskatchewan, Forget, Boivin & Breitung 6940, 28 Aug. 1949, Holotype
Helianthus couplandii Boivin
Canada: Saskatchewan, Cypress Hills, W. Shevkenek s.n., July 1939, Paratype; 1 mile south of Maple Creek, A.J. Breitung 4699, 12 July 1947, Paratype; Watrous, A.J. Breitung 1676, 13 Aug. 1942, Paratype; rivage du lac Manito, 1 mille au nord Yonker, Boivin & Alex 9810, 13 juillet 1952, Paratype; Battleford District, Harris, R.C. Russell S52007, 7 Aug. 1952, Paratype; Alberta, east end Fish Lake, A.H. Brinkman 5115, 30 June 1941, Paratype; near Burns Packing Plant, east Calgary, W.C. McCalla 11310, 21 Aug. 1950, Paratype; Medicine Hat, F. Fyles s.n., 29 July 1914, Paratype; Dominion Range Experiment Station southeast of Manyberries, Dore & Breitung 12046, Paratype; Lost River Canyon, Boivin & Alex 9555, 29 juin 1952, Paratype; along Old Man River, W.G. Dore 11739, 17 July 1950, Paratype; Medicine Hat, Boivin & Alex 9466, 24 juin 1952, Paratype
U.S.A.: California, San Bernardino County, near Ontario, A.J. Breitung 14902, 6 May 1953, Paratype; Colorado, 4 miles southeast of Denver, H. Lloyd s.n., 11 Sept. 1948, Paratype; Comte de Morgan, Fort Morgan, Boivin & Mosquin 11061, 29 juillet 1955, Paratype; Alamosa County, Great Sand Dunes National Monument, Parmelee & Hammond 3520, 21 Sept. 1965, Paratype; Illinois, Pekin, V.H. Chase 12857, 30 July 1952, Paratype; Kansas, 13 miles southwest of Meade, W.H. Horr E279, 16 Aug. 1939, Paratype; Michigan, Beaver Island, M.C. Ries s.n., 13 July 1932, Paratype; Minnesota, 6 miles south of St. Cloud, Moore & Hall 19601, 5 Aug. 1944, Paratype; Hennepin County, Minneapolis, J.W. & M.F. Moore 10219, 28 June 1938, Paratype; Nebraska, 4 miles north of Olgallala, H. Lloyd s.n., 6 Sept. 1948, Paratype; New Mexico, 1 mille au sud de Carlsbad, B. Boivin 13755, 4 juillet 1960, Paratype; 2 milles au nord de Raton, B. Boivin 13774, 7 juillet 1960, Paratype; De Baca County, 10 miles south of Fort Sumner, Parmalee & Hammond 3355, 6 Sept. 1965, Paratype; North Dakota, Richland County, Leonard, O.A. Stevens s.n., 4 Aug. 1936, Paratype; McHenry County, 11 miles east of Granville, Boivin & Dore 8134, 21 July 1951, Paratype; Route 2 west of Denbigh, G.B. Rossbach 100, 6 Sept. 1954, Paratype; Richland County, Leonard, O.A Stevens s.n., 4 Aug. 1936, Paratype; Texas, Comté de Potter, Rivière Canadienne, ca 18 milles au nord d'Amarillo, B. Boivin 13762, 6 juillet 1960, Paratype; Wisconsin, Milwaukee County, Milwaukee Harbor, L.H. Shinners 1276, 20 Aug. 1939, Paratype; New Butler, Pohl & Shinners 959, 4 Sept. 1939, Paratype; La Crosse County between La Crosse and Onalaska, T.G. Hartley 2181, 1 Aug. 1956, Paratype
Helianthus couplandii Boivin, Phytologia 23(1): 72. 1972
Canada: Saskatchewan, Entre Big Stick Lake et Crane Lake, B. Boivin 6682, 28 juillet 1949, Holotype
Helianthus nuttallii T. & G. ssp. canadensis Long, Brittonia 18: 77. 1966
Canada: Manitoba, Mont Tortue, Boivin & Alex 10245, 25 août 1952, Holotype
Helichrysum barorum Humbert, Bull. Soc. Bot. France 1930. 77: 683, 1931
Madagascar: Mont Itrafanomby, H. Humbert 13537, Dec. 1933, Topotype
Helichrysum calocladum Humb., Composees Madag. (Mem. Soc. Lin. Normand 25) 290. 1923
Madagascar: Massif de l'Andringitra, H. Humbert 3908, 27 Nov. - 8 Dec. 1924, Topotype
Helichrysum danguyanum Humbert, Composées Madag. (Mem. Soc. Lin. Normand. 25) 71, 291. 1923
Madagascar: Massif de l'Andringitra (Iratsy), H. Humbert 3918, 27 Nov. - 8 Dec. 1924, Topotype
Helichrysum geayi Humbert, Composées Madag. (Mem. Soc. Lin. Normand. 25) 80, 293. 1923
Madagascar: Pic St. Louis (Fort Dauphin), M.R. Decary 9953, 3 juillet 1932, Topotype
Helichrysum leucosphoerum Baker, J. Linn. Soc. 21: 417. 1885
Madagascar: Tsitamjuky, M.R. Decary 7763, 26 May 1930, Topotype
Helichrysum mirabile Humbert, Composées Madag. (Mem. Soc. Lin. Normand) 100, 289. 1923
Madagascar: Pic. d'Tvohibe, M. Decary 5398, 1926, Topotype
Helichrysum vagans C.T. White, Proc. Roy. Soc. Queensland 1938. 50: 80. 1939
Australia: Queensland, Springbrook, C.T. White 8226, 25 Oct. 1931, Paratype
Heliocarpus diclinus Hochr., Annuaire Conserv. Jard. Bot. Genève 20: 117. 1914
Columbia: Santa Marta, H.H. Smith 1908, 1898-1901, ? Isotype
Heliopsis helianthoides (L.) Sweet var. fisheri Boivin, Phytologia 23: 69. 1972
U.S.A.: Arkansas, Benton Co., Avoca, D. Demaree 6648a, 17 May 1929, Holotype
Heliopsis helianthoides (L.) Sweet ssp. occidentalis Fischer, Ohio J. Sci. 57: 189-190. 1957
U.S.A.: North Dakota, Cass Co., Fargo, O.A. Stevens, 10 July 1936, ? Isotype
Heliotropium cacicola Fern., Proc. Amer. Acad. 43: 62-63. 1907
Mexico: Guerrero, Iguala Canyon, C.G. Pringle 10062, 28 Sept. 1905, Isotype
Heliotropium erosum Lehm., Neue Sch. Naturf. Ges. Halle iii II 15. 1817
Canary Islands: Gran Canaria, Las Palmas, E. Asplund 1, 1 Mar. 1933, Topotype
Heliotropium maris-mortui Zohary, Palest. Journ. Bot. Ser. II. 177. 1941
Palestine: Dead Sea Area, Kallirhoe, Eig & Zohary, 26 Oct. 1926, Type Collection Material
Heliotropium messerschmidioides O. Kuntze, Rev. Gen. 438. 1891
Canary Islands: Tenerife, pag. Buenavista, E. Asplund 577, 27 Mar. 1933, Topotype
Heliotropium serpentinicum Rechinger, Ann. Naturhist. Mus. Wien 56: 202-203. 1948
Iran: Shahrud-Bustam, in montibus a Sabzewar, K.H. Rechinger 1318, 1 July 1937, Isotype
Helipterum corymbiflorum Schlecht. var. intermedium C.T. White, Publication unknown
Australia: Queensland, Gregory South District, near Windorah, S.T. Blake 12079, 11 July 1936, ? Type Collection Material
Helleborus trifolius Mill. ssp. corsicus Briq., Publication unknown
Corsica: NE de Bonifacia, J. Stefani, 15 fevrier 1903, Topotype
Hemizonia arida Keck, Aliso 4: 109. 1958
U.S.A.: California, Kern Co., Red Rock Canyon, E.C. Twisselman 7095, 8 May 1962, Topotype
Hemizonia congesta DC. ssp. tracyi Babcock & Hall, Univ. Calif. Pub. Bot. 13: 46. 1924
U.S.A.: California, Humboldt Co., J.P. Tracy 5817, 12 June 1921, Topotype
Hemizonia minthornii Jeps. Man. Fl. Pl. Calif. 1092. 1925
U.S.A.: California, Los Angeles Co., Santa Susand Pass, J.T. Howell 23375, 17 July 1947, Topotype
Hemizonia multicaulis H. & A. ssp. vernalis Keck, Aliso 4: 110. 1958
U.S.A.: California, Marin Co., Tiburon Peninsula, J.I. McMurphy, 9 June 1910, Topotype
Hemizonia spicata Greene, Fl. Francisc. 422. 1897
U.S.A.: California, Calaveras Co., Milton, Keck & Stockwell 2513, 23 Aug. 1933, Topotype
Hepatica nobilis Garsault f. rosea Neumann, Bot. Nat. 149. 1885
Romania: Cluj, E. Topa (Fl. Rom. ex. 2863), 23 Mar. 1947, Topotype
Hepatica transsilvanica Fuss., Verhand. und Mitt. d. sieb. Ver. f. Natur. 1: 83. 1850
Hungary: Kronstadt, Walz & Lanczy (Dörfler, Herb. Norm. 4702), Apr. & July 1900-1905, Topotype
Heracleum granatense Boissier, Elench. 49. 1838
Spain: Regn. Granatense, Sierra Nevada, ad rivular in Dehesa, Porta et Rigo iter III 558, 1891, Topotype
Heracleum nipponicum Kitagawa, Rep. Inst. Sc. Research Manchoukou 2: 274. 1938
Japan: Tokyo Pref., Dokanyama, Kita-ku, T. Makino, 25 May 1906, ? Type - Publication not Available
Hesperolinon didymocarpum H.K. Sharsmith
U.S.A.: California, Lake County, 8.7 miles south of Howard Springs, H.K. Sharsmith 5525, 19 May 1965, Topotype
Hesperolinon didymocarpum Sharsmith, Univ. Calif. Pub. Bot. 32(4): 302-303. 1961
U.S.A.: California, Lake Co., Big Canyon Creek, H.K. Sharsmith 4705, 28 May 1959, Paratype
Hesperolinon disjunctum H.K. Sharsmith
U.S.A.: California, Tehama County, 29 miles northwest of Paskenta, H.K. Sharsmith 4024, 12 July 1951, Paratype; Stanislaus County, Arroyo des Puerto, Red Mountains, H.K. Sharsmith, 2.3 miles above Stanislaus County Labor Camp, H.K. Sharsmith 4589, 19 May 1957, Paratype; Glenn County, Black Diamond Ridge, Mendocino National Forest, H.K. Sharsmith 4163, 22 June 1955, Paratype; Napa County, one mile east of spur road to Samuela Springs, H.K. Sharsmith 4118, 1 June 1952, Paratype
Hesperolinon disjunctum Sharsmith, Univ. Calif. Pub. Bot. 32(4): 300. 1961
U.S.A.: California, Lake Co., Bartlett Springs road 4.5 miles southwest of Leesville, Constance & Shan 3073, 2 June 1946, Paratype
Hesperolinon tehamense H.K. Sharsmith
U.S.A.: California, Glenn County, Inner North Coast Ranges, above South Branch Elk Creek, H.K. Sharsmith 4164, 22 June 1952, Paratype; Tehama County, 7.8 miles northwest of Paskenta, H.K. Sharsmith 4026, 12 July 1951, Paratype
Hesperolinon tehamense Sharsmith, Univ. Calif. Pub. Bot. 32(4): 298-299. 1961
U.S.A.: California, Tehama Co., Mendocino National Forest, H.K. Sharsmith 4018, 11 July 1951, Isotype
Hesperomannia arborescens Wawra var. oahuensis, Hilleb. Fl. Haw. Isl. 232. 1888
Hawaiian Islands: Oahu, S. Carlquist 1910, 2 July 1966, Topotype
Hesperomannia swerzeyi Degener, Fl. Hawaiiensis Fam. 344. 1935
Hawaiian Islands: Oahu, Black Junction, Kahuku Region, Degener & Carroll 20546, 26 Feb. 1950, Topotype
Heteropappus hispidus Less. var. eriocephalus Novop., Herb. Fl. Ross. Sched. 2771
U.S.S.R.: Prov. Irkutzk, distr. Balagansk, Bashejewsky, N. Maltsev, 30 July 1906, Isotype
Heteropteris beecheyana Juss., Arch. Mus. Par. 3: 475-476. 1843
Mexico: Morelos, near Cuernavaca, C.G. Pringle 13794, 14 Aug. 1906, Topotype
Heterotheca zionensis Semple, Brittonia 39(3): 384-385. 1987
U.S.A.: Utah, Washington Co., W of Leeds on Silver Reef Rd., Semple & Heard 7859, 11 Sept. 1985, Isotype
Heuchera cylindrica Dougl. var. septentrionalis R.B. & L., Minn. Stud. in Pl. Sc. 2: 139-140. 1936
Canada: Alberta, Banff, Tunnel Mt., H.C. Cowles 102, 24 June 1907, Paratype
Heuchera ×easthamii Calder & Savile, Brittonia 11(2): 54. 1959
Canada: British Columbia, Kispiox River, 14 mi. Naf Hazelton, Calder et al. 14748, 19 Aug. 1954, Holotype and Isotype
Hevea benthamiana Muell.-Arq., Linnaea 34: 204. 1865-66
BRAZIL: Rio Vaupes, Tamaquari, above Bela Vista, Schultes & Lopez 9013, 8 Nov. 1947, Topotype
Hibiscadelphus giffardianus Rock, Hawaii Board Agric. Div. For. 1: 8. 1911
Hawaiian Islands: Mauna Loa, Puaulu, J.F. Rock 8773, April 1911, Cotype
Hibiscadelphus hualalensis Rock, Hawaii Board Agric. For. Div. 1: 14. 1911
Hawaiian Islands: Hawaii Volcanoes National Park, Baker & Allen KP-HH-5, 14 Dec. 1975, Topotype
Hibiscadelphus ×puakuakiwi Baker & Allen, Phytologia 33(4): 276. 1976
Hawaiian Islands: Hawaii Volcanoes National Park, Kipuka Ki, Baker & Allen, 15 Nov. 1975, Topotype (Type tree KK-HX-1)
Hibiscus (Pentaspermum) altheaefolius Shuttl. in A. Gray Pl. Wright. 1: 23. 1850
U.S.A.: Florida, ad fl. Manate, Rugel 102, Isotype
Hibiscus brackenridgei A. Gray, Bot. U. St. Expl. Exped. 1: 175. 1854
Hawaiian Islands: Oahu, O. Degener 20943, 2 Apr. 1950, Topotype
Hibiscus ferrugineus Cav., Diss. 3: 162 t. 60
Madagascar: Ambovombe, M.R. Decary 8315, 9 Dec. 1930, ? Type - Publication not Available
Hibiscus incana Wendland, Bot. Beobacht. 54
U.S.A.: Florida, Lake Co., Eustis, G.V. Nash 673, 1-15 May 1894, ? Type - Publication not Available
Hibiscus mutabilis L. f. roseoplenus Makino, Publication unknown
Japan: Osumi Pen., T. Makino, 1932, ? Type Collection Material
Hieracium alpinum (L.) Backh. var. alcaeum Omang, Publication unknown
Sweden: Torne Lappmark, Mt. Kirunavaara, C.G. Alm, 17 Aug. 1928, ? Type Collection Material
Hieracium anthracinum Dahlst., Arkiv. Bot. Stock. 9: No. 1: 86. 1909
Sweden: Jämtland, C.O. Schlyter, 23 Aug. 1899, Topotype
U.S.A.: New Hampshire, Durham, Hodgdon & Giddings 5385, 7 juin 1947, Holotype
Hieracium aterrimum Hyl., Symb. Bot. Upsal 7(1): 176. 1943
Sweden: Blekingo, Kungsholmsfort i Karlskrona, Hj. Hylander, 15 June 1948, Topotype
Hieracium australe Fr. ssp. mediolanense Fen. & Zahn. in Engler's Bot. Jahrb. 61 (1927) Beibl.
Italy: Longolbardia - Mediolanum, L. Fenaroli, 15 July 1926, Topotype
Hieracium baeticum Arvet-Touvet & Reverchon ex Herv., Rev. Gen. Bot 4: 154-155. 1892
Spain: Andalousie, Sierra de la Nieva, E. Reverchon, 12 juillet 1889, Isotype
Hieracium baenitzii N.P., Die Hieracien Mittel-Europas 1: 694. 1885
Germany: Königsberg, C. Baenitz, 14 June 1890, Topotype
Hieracium bracchiatum Bert. ssp. rastetteri de Retz, Publication unknown
France: Haut Rhin, forêt de la Hardt, V. Rastetter, 14 & 21 juin, 5 & 14 juillet 1969, ? Type Collection Material
Hieracium callimorphum N.P. ssp. petrakianum Zahn, Publication unknown
Czechoslovakia: Mahrisch-Weisskirchen, F. Petrak, June 1924, ? Type Collection Material
Hieracium canadense Michx. var. divaricatum Lepage
Canada: Québec, Saint-Roch-des-Aulnais, H. Groh s.n., "12 July 1926, Paratype; Rivière-du-Loup, sur le chemin de Cacouna, Hamel & Payette 807, 2 août 1950, Paratype
Hieracium canadense Michx. var. divaricatum Lepage, Nat. can. 87: 77-79. 1960
Canada: Québec, Gaspé Co., Bonaventure Island, W. Manger 123, 1940, Paratype
Hieracium canadense Michx. var. subintegrum Lepage, Nat. can. 85: 88-91. 1958
Canada: Québec, Riv. Nottaway, Dutilly & Lepage 35286, 9 août 1957, Isotype
Hieracium canum Naeg. u. Peter, ssp. catoschistum Naeg. u. Peter, Monog. d. Pilosell. 428. 1885
Austria: prope "Znaim", A. Oborny, June 1896, (Herb. Norm. ed. I. Dörfler 3570), Topotype
Hieracium cerinthoides L. ssp. vivanti de Retz, Publication unknown
France: Basses Pyrenees, d'Escot, J. Vivant, 6 juillet 1967, ? Type Collection Material
Hieracium cladanthum Arvet-Touvet ex Fletcher in Clark & Fletcher, Farm Weeds of Canada, Dept. Agriculture, p. 63. 1906; Les Mauvaise Herbes du Canada, Ministère de L'Agriculture, P. 69. 1906
Canada: Quebec, Matapedia, D. Wheeler, 24 Sept. 1896, Type Collection Material
Hieracium Columbia num Rydb., Bull. Torrey Bot. Club 28: 513. 1901
U.S.A.: Idaho, Canyons near Farmington Landing, Lake Coeur d'Alene, Sandberg et al. 573, 7 July 1892, Paratype
Hieracium crebiserratum Hyl., Symb. Bot. Upsal 7: 1: 235. 1943
Sweden: Uppland, Lidingö, Kappsta park, S. Nordenstam, 3 Aug. 1964, Topotype
Hieracium deganwyense Pugsley, Jour. bot. Lond. 79: 180. 1942
England: Deganwy, Denbigh, H.W. Pugsley, 8 July 1929, Hortotype
Hieracium döllianum Zahn in Dörfler Herb. Normale No.3576. 1898
Germany: Badena prope "Bruchsal", H. Zahn, 5 June 1898, Isotype
Hieracium ×doreii Lepage
Canada: Prince Edward Island, Queens County, Hunter River, D. Erskine 1248, 8 July 1952, Paratype; New Brunswick, Charlotte County, Tower Hill, Hall & Muenscher 183a, 28 June 1952, Paratype; Tower Hill, W.G. Dore 9826, 10 June 1949, Paratype
Hieracium ×dorei Lepage, Nat. can. 94: 618. 1967
Canada: New Brunswick, Charlotte Co., Tower Hill near Moore's Mills, Dore & Hall 13723, 5 July 1952, Holotype
Hieracium epimedium Fries, Epsicris. Hierac. 103. 1862
France: Savoie, Mt. Mirandin, Perrier, 2 Aug. 1867, Topotype
Hieracium fickii Uechtr. ex Nym., Consp. Fl. Eur. Suppl. ii. 1(1889): 191
Czechoslovakia: Silesia, Riesengebirge, Fick, Sept. 1892, Topotype
Hieracium firmiramum Hyl., Symb. Bot. Upsall 7(1): 194. 1943
Sweden: Uppland, Uppsala, in declivo inter arcem et "Blekebacke", H. Smith, 10 June 1943, Topotype
Hieracium ×flagellare Willd. nm. pilosius Lepage
Canada: Quebec, comté de Rimouski, St-Simon, E. Lepage 15155, 24 juin 1966, Paratype
Hieracium ×flagellare Willd. nm. pilosius Lepage, Nat. can. 94: 615. 1967
Canada: Québec, Rimouski Co., St. Simon, E. Lepage 15138, 21 juin 1966, Holotype
Hieracium glomeratum Fr. var. curtipilum Dahlstedt, Publication unknown
Scandinavia: Öland, H. Dahlstedt, 1885, ? Type Collection Material
Hieracium gouanii A.-T., Bot. Soc. Arag. 11: 205. 1912
Spain: Catalogne, Pyrénées à Ripoll, F. Sennen, Sept. 1910, ? Type Collection Material
Hieracium gratense Arv.-Touv. & Gaut., Bull. Soc. Bot. France 51: LX. 1904
Spain: Grenade, Sierra del Pinar, El. Reverchon 1213, juillet 1900, ? Isotype
Hieracium ×grohii Lepage, Nat. can. 87: 100-102. 1960
Canada: Québec, Rivière-du-Loup, H. Groh, 17 Aug. 1926, Holotype
Hieracium heteradenum A.T. & Cadevall, Bol. Soc. Arag. 11: 205. 1912
Spain: Catalogne, F. Sennen 1315, 1 Aug. 1911, ? Type - Publication not Available
Hieracium hoppeanum Schult. var. subpeleterianum A.T. f. depressa A.T., Publication unknown
Spain: Sierra del Pinar d'Albarracin, E. Reverchon 1165, juin 1899, ? Type Collection Material
Hieracium juranum Fries ssp. pseudohemiplecum Zahn var. ramosofastigiatum,/ Zahn, Publication unknown
Europe: Zentralalp, Rütland unterhalb Arosa, C. Coaz, 27 July 1924, ? Type Collection Material
Hieracium kalmii L. var. magnilacustre Lepage, Nat. can. 88: 46. 1960
Canada: Ontario, Thunder Bay District, Port Arthur, D. Lindsay 1267, 24 July 1957, Holotype
Hieracium lepioclados Naegeli & Peter var. striatilingua Vollmann & Zahn, Publication unknown
Austria: Oberbayern, Kirchseeon bei München, Fr. Vollmann, 17 June 1911, ? Type Collection Material
Hieracium leptophyton N.P. ssp. orthochaetum Ob. & Zahn f. substriatum Zahn, Publication unknown
Czechoslovakia: Mahrisch-Weisskirchen, E. Bohemia, F. Petrak, June 1924, ? Type Collection Material
Hieracium megacephalon Nash, Bull. Torrey Bot. Club 22: 152-153. 1895
U.S.A.: Florida, Eustis, G.V. Nash 390, 1894, Type Collection Material
Hieracium murorum L. var. acroleucum Stenström, Publication unknown
Sweden: Wärmland, Gordsjo, K.O.E. Stenström, 1885, ? Type Collection Material
Hieracium murorum L. ssp. contreanum de Retz, Publication unknown
>France: Charente, Champagne-de-Blanzac, E. Contré, 19 mai 1968, ? Type Collection Material
Hieracium murorum L. ssp. contreanum de Retz var. submaculatum de Retz, Publication unknown
France: Charente, Vaux-Rouillac, E. Contré, 19 mai 1968, ? Type Collection Material
Hieracium murorum L. var. galbanum Dahlstedt, Publication unknown
Sweden: Östergötland, H. Dahlstedt, 1884, ? Type Collection Material
Hieracium murorum L. ssp. gentile Jord. var. silvivagum Jord, Publication unknown
U.S.S.R.: 18 June 1954, ? Type Collection Material
Hieracium murorum L. var. pilosissimum A.T., Publication unknown
Spain: Sierra de Camarena, E. Reverchon 806, juin 1892, ? Type Collection Material
Hieracium murorum L. var. pseudodiaphunum Dahlstedt, Publication unknown
Sweden: Vaxholm, O. Juel, 9 July 1885, ? Type Collection Material
Hieracium murorum L. var. reclinatiforme Dahlstedt, Publication unknown
Sweden: H. Dahlstedt, 1827, ? Type Collection Material
Hieracium praecox Sch.-Bip. ssp. glaucinum Jord. var. ellipticifolium de Retz, Publication unknown
France: Cote d'Or, le long de la route de Dijon à Chatillon, B. de Retz 50444, 3 juin 1963, ? Type Collection Material
Hieracium protractifrons Hyl., Symb. Bot. Upsal 7: 1: 256. 1943
Sweden: Blekinge, Kungsholmfort i Karlskrona, Hj. Hylander, 15 June 1948, Topotype
Hieracium ravaudii Arv.-Touv., Monog. Pil. et Hier. 58. 1888
France: Villard-de-Lans (Isère), A. Ravaud, 30 June 1874 (Soc. Dauph. 481), Topotype
Hieracium rusbyi Greene, Bull. Torrey Bot. Club 9: 64. 1882
U.S.A.: New Mexico, Mogollon Mountains, H.H. Rusby, Aug. 1881, Isotype
Hieracium scabriusculum Schwein. var. saximontanum Lepage
Canada: Alberta, Cypress Hills, Grayburn Butte, A.J. Breitung 5092, 25 July 1947, Paratype; British Columbia, Grand Forks, E.G. Anderson 1012, 25 July 1950, Paratype; near airport just west of Hope, Calder & Savile 10432, 13 July 1953, Paratype; about 2 miles NW of west end of Tachik Lake, Calder et al. 14517, Paratype; Columbia Lake cabins between Canal Flats and Fairmont, J.W. Eastham 15837, 14 July 1947, Paratype
Hieracium scabriusculum Schwein. f. chrysostylum Lepage, Nat. can. 87: 64-65. 1960
Canada: Quebec, co. d'Argenteuil, St-Adolphe, Rolland-Germain 2200, 2 août 1949, Isotype
Hieracium scabriusculum Schwein. var. Columbianum (Rydb.) Lepage f. phaeostylum Lepage, Nat. can. 87: 67. 1960
Canada: Alberta, Edmonton, E.H. Moss 4346, 9 Sept. 1937, ? Paratype
Hieracium scabriusculum Schwein. var. perhirsutum Lepage, Nat. can. 88: 44. 1961
Canada: Saskatchewan, 20 mi. S of Meadow Lake, A.J. Breitung 8171, 5 Aug. 1949, Holotype
Hieracium scabriusculum Schwein. var. saximontanum Lepage, Nat. can. 87: 69-71. 1960
Canada: British Columbia, one mile north of 100 Mile House between Clinton and Williams Lake, Calder et al. 15483, 5 Sept. 1954, Holotype
Hieracium scabrium Michx. var. leucocaule Fern. & St. John, Rhod. 16: 182. 1914
Canada: Nova Scotia, Sable Island, H.T. Gussow, Sept. 1911, Paratype
Hieracium scandinavicum Dahlstedt ssp. amblycephaloides Dahlstedt, Publication unknown
Sweden: Jemtland, Ärc, O. Köhler, 15 July 1898, ? Type Collection Material
Hieracium silvaticum L. var. cauitiosum Dahlstedt, Publication unknown
Sweden: Östergötland, H. Dahlstedt, 1883, ? Type Collection Material
Hieracium sparsiguttatum Hyl, Symb. Bot. Upsal. 7(1): 133. 1943
Sweden: Karlskrona, Sunna Villa Viks park, Hj. Hylander, 4 June 1948, Topotype
Hieracium ×stoloniferum Waldst. & Kit. nm. cayouetteanum Lepage, Nat. can. 94: 610. 1967
Canada: Quebec, Cté de Québec, Sainte-Foy, Demarais & Cayouette, 29 juin 1949, Isotype
Hieracium ×stoloniflorum Waldst. & Kit. nm. laurentianum Lepage, Nat. can. 94: 610-611. 1967
Canada: Quebec, Rimouski Co., St. Simon, E. Lepage 15129, 21 juin 1966, Holotype
Hieracium subinquilinum Ohlsén, Arkiv. Bot. Stock. 33: A No. 13: 26-27. 1949
Sweden: Västergôtland: Lerum parish, Hulan Park, R. Ohlsén, 15 July 1946, Type Collection Material
Hieracium succicum Fr. var. islandica (Lge.) Dt., Act. Hort. Bergiani II 4: 15-16. 1893
Iceland: Sudvesturland, Reykjavik, E. Evers, 16 July 1963, Topotype
Hieracium sugermaniciforme Zahn ssp. pseudoradiane Zahn, Publication unknown
Czechoslovakia: Mährisch-Weisskirchen, Hruby, June 1926 ? Type Collection Material
Hieracium thuringorum Sagorski, Deutsch. Bot. Monatsschr. 15(1): 201. 1897
Germany: Thüring, Steinbrüche bei Koesen, Sagorski, June 1895, Topotype
Hieracium umbellatum L. ssp. brevifolioides Zahn, Publication unknown
Europe: Föhrenbez, Unterhalb Maladers, Meisser & Zahn, 22 Sept. 1923, ? Type Collection Material
Hieracium ungavense Lepage, Nat. Can. 85: 17. 1958
Canada: Quebec, Flore de la Baie-James, Route Chisasibi-Radisson, km 13, Cayouette & Darbyshire J86-300, 14 août 1986, Topotype
Hieracium unguiculatum Hyl., Symb. Bot. Upsal. 7(1): 270. 1943
Sweden: Blekinge, Kungsholmsfort i Karlskrona skärgärd, Hj. Hylander, 20 June 1946, Topotype
Hieracium yvesianum A.-T., Hierac. Cat. Syst. 268. 1913
France: Alpes-Maritimes, A. Saint-Yves, Topotype
Hieracium zygophorum Hyl., Symb. Bot. Upsal. 7(1): 130. 1943
Sweden: Karlskrona, Yttre Vaino, Villa Viks park, Hj. Hylander, 15 June 1947, Topotype
Hierochloe orthantha Sorensen, Med. om Gron. 136: 1-2. 1954
U.S.A.: New York, Whiteface Mtn., near Lake Placid, A.S. Hitchcock (Amer. Gr. Nat. Herb. 438), 17 Aug. 1917, Paratype
Hierochloe pauciflora R.Br., Chlor. Melv. 35. 1823
Canada: District of Franklin, Melville Island, G. Parker 61a, 7 Aug. 1974, Topotype
Hierochloe pauciflora R.Br. f. setigera Lepage, Nat. can. 81: 255. 1954
Canada: Ontario, cap Henrietta Maria, Dutilly & Lepage 31124, 10 août 1953, Isotype
Hippia stolonifera Broteri, Fl. Lusita 1: 373. 1804
Spain: Coimbra, W. Rothmaler, 11 May 1936, Topotype
Hippocratea foliosa Rusby, Descriptions of Three Hundred New Species of South American Plants, p. 54. 1920
Columbia: Santa Marta, H.H. Smith 893 (1898-1901), ? Isotype
Hiraea oblongifolia DC., Prodr. 1: 585. 1824
Columbia: Santa Marta, H.H. Smith 336, 1898-1901, Isotype
Hiraea sanctae-martae Morton, Proc. Biol. Soc. Wash. 46: 88. 1933
Columbia: Santa Marta, H.H. Smith 1514, 1898-1901, ? Paratype
Hoffmannia pauciflora Standley, Publ. Field Colombian Mus. Bot. Ser. 4: 282. 1929
Columbia: Santa Marta, H.H. Smith 1814, 1898-1901, ? Isotype
Holcus setiglumis Bss. & Reut. ssp. duriensis Silva, Publication unknown
Portugal: Tras-os-Montes, Silva et al. 4797, 22 mai 1951, Isotype
Holmskioldia speciosa Hutch. & Corb., Kew Bull. 1920: 332
South Africa: Transvaal, Komati Poort, I.B. Pole-Evans 16879H, 29 Nov. 1917, Isotype
Holodiscus austraus Heller. Bull. Torrey Bot. Club 25: 194. 1898
U.S.A.: New Mexico, Santa Fey Canon, 9 miles east of Santa Fey, A.A. & G. Heller 3840, 12 July 1897, Isotype
Homalium oppositifolium Baillon, Soc. Bot. Linn. Paris 1: 575. 1889
Madagascar: Farafaugana, M. Decary 5757, 2 Mar. 1927, Topotype
Hopea hainanensis Merr. & Chun, Sunyatsenia 5: 134. 1940
China: Hainan, Kum-Yun District, Chou-Lun, north of E-Wong Shan, H.Y. Liang 65329, 26 Feb. 1934, Paratype
Hordeum californicum Covas & Stebbins, Madrono 10: 7. 1949
U.S.A.: California, E of Carmel, G.L. Stebbins 3435, 28 May 1944, Paratype
Hordeum hexaploidum Covas, Rev. Argent. Agron. 17: 230. 1950
Cultivated AT Ottawa: from seed from Rio Negro Expt. Sta., J.W. Chapman, 16 Aug. 1949, Hortotype
Hordeum leporinum Link var. simulans Bowden
Cultivated: from seed, Gentry 12918 from Afghanistan, 8 miles south-west of Maimana, via U.S.D.A. P.I. No. 211049, Paratype (4 sheets); from seed from Botanic Garden Hort. Bot. RSS, Turcomaniae Ashkhabad, USSR, Paratype; from seed, R.K. Godfrey 82, from Turkey, 110 km southeast of Ankara along route 60, via U.S.D.A., P.I. No. 204705, Paratype (3 sheets)
Hordeum leporinum Link var. simulans Bowden, Can. J. Bot. 40: 1694. 1962
Cultivated: from seed, Gentry 12910, from Afghanistan, Maimana, via U.S.D.A. P.I. No. 211046, Holotype and Isotype
Hordeum nevskianum Bowden, nom. nov., Can. Jour. Genetics and Cytology 7: 396. 1965, based on H. brevisubulatum sensu Nevski, Acta Inst. Botan. Nom. Komarov. Acad. Sci. U.R.P.S.S. Flora et systematica plantae vasculares, Ser. 1, Fasc. 5: 175. 1941
Hordeum rosevitzii Bowden, nom. nov., Can. Jour. Genetics and Cytology 7: 395. 1965, based on Elymus sibiricus L.
Hosackia incana Torrey, Pacific R.R. Rept. 4: 79. 1856
U.S.A.: California, Nevada Co., Bear Valley Grade, Hwy. 20, L.S. Rose 70056, 28 May 1970, Topotype
Hosackia ornithopus Greene, Bull. Calif. Acad. 1: 185. 1885
Mexico: Guadalupe Island, Weber & McCoy 11973, 19-29 Apr. 1963, Topotype
Hosackia wrightii Gray, Pl. Wright. 2: 42. 1852
U.S.A.: New Mexico, Frière, ? Topotype
Houstonia longifolia Gaertner var. musci Boivin
Canada: Manitoba, Brandon, H. Marshall 34, 2 June 1946, Paratype; 2 miles west of Shilo, Boivin & Dore 8263, 24 July 1951, Paratype; Treesbank, F. Fyles s.n., 16 July 1914, Paratype; Awene, H. Groh s.n., 9 June 1932, Paratype; Shilo Camp, Frankton & Bibbey 97, 13 June 1947, Paratype; Saint-Lazare, Boivin & Alex 9290, 14 juin 1952, Paratype; Riding Mountain National Park, east gate, J.S. Rowe 510, 25 June 1950, Paratype; Brokenhead, Boivin et al. 10658, 24 juin 1955, Paratype; Reserve Forestière Whiteshell, Lac Falcon, Boivin et al. 13042, 24 juin 1959, Paratype; near Pointe du Bois, A. & D. Löve 5546, 22 June 1952, Paratype; Saskatchewan, 3 miles west of McKague, A.J. Breitung 591, 30 June 1940, Paratype; McKague, A.J. Breitung s.n., 18 June 1934 (fls.), 9 July 1936 (frt.), Paratype; 6 miles southwest of McKague, A.J. Breitung s.n., 2 Aug. 1936, Paratype; 5 miles east of Esterhazy, G.W. Selleck 76, 25 June 1954, Paratype; 12 miles north of Meadow Lake, A.J. Breitung 8475, 20 Aug. 1949, Paratype; Macdowell, R.C. Russell S4147, 4 July 1951, Paratype; Prince Albert, Ledingham & Hudson 910, 24 May 1952, Paratype; Nisbet Provincial Forest east of Prince Albert, Boivin & Breitung 6114, 20 June 1949, Paratype; 1 mile north of St. Louis, Senn et al. 2803, 11 Aug. 1946, Paratype; Alberta, near Edmonton, E.H. Moss 4002, 6 June 1936, Paratype; north of Fort Saskatchewan, E.H. Moss 10257, 20 July 1953, Paratype
Houstonia longifolia Gaertner var. compacta Terrell, Rhod. 61: 201-204. 1959
U.S.A.: West Virginia, Cabell Co., Roland Park, F.A. Gilbert, 9 July 1937, June 1939 (Pl. Ex. Gray 987), Isotype
Houstonia longifolia Gaertner var. musci Boivin, Phytologia 16: 29. 1968
Canada: Alberta, 2 miles north of Bruderheim, Boivin et al. 10176, 18 Aug. 1952, Holotype
Houstonia longifolia Gaertner var. soperi Boivin
Canada: Ontario, Burford, T.W. Burgess s.n., 21 June 1884, Paratype; comté de Norfolk, Normandale, Marie-Victorin et al. 46377, 3 juillet 1936, Paratype; Saint Williams, Marie-Victorin et al. 46424, 3 juillet 1936, Paratype; Walsingham, W.G. Dore 44-27, 28 June 1944, Paratype; west of Simcoe, J. Dearness 935, 1 June 1889, Paratype
Houstonia longifolia Gaertner var. soperi Boivin, Phytologia 16: 30. 1968
Canada: Ontario, Turkey Pt., J.H. Soper 588, 4 July 1938, Holotype
Houstonia montana Small, Rhod. 61: 169-171. 1959
U.S.A.: North Carolina, Mitchell Co., Roan Mountain, Lyon's Bluff, Small & Heller, 16 July 1891, Paratype
Humata huahinensis Copel., Bishop Mus. Bull. 93: 11 t.12B.1932
Society Islands: Ile de Huahine, E.A. de la Rüe, 23 Mar. 1955, Topotype
Huperzia appalachiana Beitel, Amer. Fern. J. 82: 45-46. 1992
Canada: Ontario, Thunder Bay District, west end of little Pigeon Bay, C.E. Garton 1909, 18 July 1952, Paratype
Huperzia appalachiana Beitel & Mickel, Amer. Fern. J. 82(2): 45. 1992
U.S.A.: New York, Essex Co., Mt. Marcy, Lawrence & Dress 433, 30 July 1948, Topotype
Hutera rupestris Porta et Rigo, Atti Accad. Agiati 9: 6. 1891 (1892)
Spain: prope Alcaraz, Porta & Rigo 719(149), 1891, Topotype
Hybanthus havanensis Jacq., Enum. Syst. Pl. 17. 1760
CUBA: Santa Clara Province, Las Vegas de Matagua, R.A. Howard 6274 (Pl. Ex. Gray 1166), 8 Aug. 1941, Topotype
Hydrophyllum albifrons Heller, Bull. Torrey Bot. Club 25: 267. 1898
U.S.A.: Idaho, Nez Perces Co., Lake Waha, A.A. & E.G. Heller 3269, 20 June 1896, Isotype
Hydrophyllum occidentale (Wats.) Gray var. fendleri Gray, Proc. Am. Acad. Arts & Sci. 10: 314. 1875
U.S.A.: New Mexico, Santa Fe Canyon, A.A. & E.G. Heller 3644, 2 June 1897, Topotype
Hydrophyllum thompsonii Peck, Torreya 28: 55. 1928
U.S.A.: Oregon, Wasco Co., The Dalles, J.W. Thompson 11355, 18 Apr. 1935, Topotype
Hymenopappus arenosus Heller, Bull. Torrey Bot. Club 25: 200-201. 1898
U.S.A.: New Mexico, Santa Fe Co., A.A. & E.G. Heller 3542, 17 May 1897, Isotype
Hymenopyramis parvifolia Moldenke, Phytologia 5: 339-340. 1956
Thailand: NE, Loel, Wang Sphung, Sithan, Dee 443, 15 Sept. 1951, Topotype
Hyoseris radiata L. var. hispida Gavelle, Publication unknown
France: Grasse, G. Gavelle, 29 Mar. 1967, ? Type Collection Material
Hypericum adpressum Barton var. spongiosum Robins., Rhod. 4: 136. 1902
U.S.A.: Massachusetts, Flax Pond, Bourne, C.G. Kennedy et al. (Pl. Ex. Gray 234), 15 Sept. 1901, Isotype
Hypericum canadense L. var. magninsulare Weatherby, Rhod. 30: 188. 1928
Canada: New Brunswick, Grand Manan, Weatherby & Weatherby (Pl. Ex. Gray 568), 14 Aug. 1927, Topotype
Hypericum erectum Thunb. var. caespitosum Makino, Publication unknown
Japan: Tokyo Pref., Oizumi, Nerima-ku, T. Makino, Sept. 1926, ? Type Collection Material
Hypericum glandulosum Dryland in Ait., Hort. Kew Ed. I, 3: 107. 1789
Canary Islands: Nivaria, E.R. Sventenius 39, 2 May 1957, Topotype
Hypericum grandiflorum Choisy, Prod. Mon. Hyper 38. 1821
Canary Islands: Tenerife, Valle de Orotava, E. Asplund, 33 Mar. 1933, Topotype
Hypericum graveolens Buckley, Am. J. Sc. 45: 174. 1843
U.S.A.: North Carolina, Buncombe Co., Craggy Mountain, Biltmore Herbarium 5543, 13 July & 12 Aug. 1897, Topotype
Hypericum umbellatum A. Kerner, Oesterr. bot. Zeitsch. 13: 141- 142, 247
Austria: Transsilvania, in montibus Bihariensibus supra Vidram in monte Pietra Strucu, Simkovics, (Fl. ex. Aust.-Hung. 519), Topotype
Hypericum vulcanicum Koidzumi f. nigrum Kimura, Publication unknown
Japan: Prov. Ugo, Hondo, Mt. Ninbetsu, Ninbetsu-mura, Minamiakita-gun, T. Makino, 1927, ? Type Collection Material
Hypochoeris carpathica Pax, Österr. Bot. Zeitschr. 1895, p. 26-27
Hungary: Montes Nagy Fatra, Huljak & Margittai (Fl. Hung. ex. 596), 26 July 1913, 17 July 1915, Topotype
Hypochoeris pampasica Cabrera, Rev. Mus. La Plata n.s. Secc. Bot. 4: 395-397. 1941
Argentina: Partido de Pellegrini, A.L. Cabrera 6904, 28 Nov. 1940, Paratype
Hypoestes floribunda R.Br., Prodr. 474. 1810
Australia: R. Brown 1802-5, ? Isotype