Maba sandwicensis A.DC. Prod. 8: 242. 1844
Canary Islands: Maui, bet. Nihiku and Hana, O. & I. Degener 27604, 4 July 1961, Topotype
Machaeranthera ammophila Reveal
U.S.A.: Nevada, Nye County, 1 mile northwest of Carson Slough, J.L. Reveal 1538, 13 July 1968, Paratype; 0.2 mile east of Carson Slough, J.L. Reveal 1942, 4 July 1968, Paratype
Machaeranthera ammophila Reveal, Bull. Torrey Bot. Cl. 97(3): 171. 1970
U.S.A.: Nevada, Nye Co., Ash Meadows, 0.3 mi. W of Carson Slough on Devil's Hold Rd., Reveal & Holmgren 1882, 21 Aug. 1968, Isotype
Machaeranthera glabriuscula (Nutt.) Cronq. & Keck var. confertifolia Cronq., Leafl. West. Bot. 10: 11. 1963
U.S.A.: Utah, Kane Co., Cottonwood Creek, 21 mi. SE of Cannonville, A. Cronquist 9147, 30 May 1961, Paratype
Machaeranthera ramosa Nelson, Bull. Torrey Bot. Cl. 28. 233. 1901
U.S.A.: Wyoming, Albany Co., Laramie, A. & R. Nelson 1006, 21 Sept. 1933, Topotype
Machaeranthera tortifolia (T. & G.) Cronq. & Keck var. imberbis Cronq., Leafl. West. Bot 10: 12. 1963
U.S.A.: Utah, Grand Co., Green River west of Moab, A. Cronquist 8994, 10 May 1961, Isotype
Machaerium glabratum Pittier, Contr. U.S. Nat. Herb. 20: 116. 1918
Columbia: Santa Marta, H.H. Smith 264, 1898-1901, ? Isotype
Machaerium glabratum Pittier, Contr. U.S. Nat. Herb. 20: 116. 1918
Columbia: Santa Marta, H.H. Smith 2032, 1898-1901, Paratype
Machaerium millefolium Pittier, Contr. U.S. Nat. Herb. 20: 119. 1918
Columbia: Santa Marta, H.H. Smith 2033, 1898-1901, ? Isotype
Machaonia microphylla Griseb., Mem. Am. Acad. 8: 510. 1863
CUBA: near Rio San Juan at Camino del Sur, Howard et al. 397, 17 July 1951, Topotype
Maesa emirnensis A.DC., Ann. Sc. Nat. Ser. II 16: 79. 1841
Madagascar: Sud de Moramanga, M.R. Decary 6942, 8-2-1930, Topotype
Maesa formosana Mez., Engl. Pflansenreich 8(4): 29. 1902
Formosa: Mt. Lion, T.S. Liu, 25 Apr. 1950, Topotype
Malacothrix fendleri A. Gray, Pl. Wright. 2: 104. 1852
U.S.A.: New Mexico, Hills fifteen miles west of Santa Fe, A.A. & E.G. Heller 3573, 22 May 1897, Topotype
Malcolmia crenulata (DC.) Boiss., Boiss. var. albiflora Eig. Second Contrib. Fl. Palestine p. 2. 1927
Israel: Jerusalem, Mt. Scopus, I. Amdursky, (Fl. Palestinae ex. 127), 18 Feb. 1931, Topotype
Malus macounii Greene, Ott. Nat. 18: 215-216. 1905
Canada: British Columbia, Chilliwack Lake, J.M. Macoun, 7 July 1901, 13 July 1901, Type Collection Material
Malva aurantiacum Scheele, Linnaea 21: 469. 1848
U.S.A.: Texas, New Braunfels, ? Lindheimer 683, July 1860, Topotype
Malva prostrata Phil., Ann. Univ. Chil. 2: 163. 1870
CHILE: Mendoza, Las Hernas, Parmillo de Uspallata, J.H. Hunziker 3017, 21 Jan. 1948, Topotype
Malvastrum hallii Eastw., Leafl. West. Bot. 1: 216. 1936
U.S.A.: California, Contra Costa Co., Mt. Diablo, L.S. Rose 54082, 29 June 1954, Topotype
Malvastrum howellii Eastw., Leafl. West. Bot. 1: 220. 1936
U.S.A.: California, Contra Costa Co., Nortonville, L.S. Rose 54081, 29 June 1954, Topotype
Malvastrum involucratum Robins. in A. Gray, Syn Fl. N. Am. 1(1): 310. 1897
U.S.A.: California, Monterey Co., Carmel Valley, L.S. Rose 53039, 31 May 1953, Topotype
Malvastrum paniculatum Gray, Proc. Amer. Acad. 22. 290. 1868
Mexico: Baja California, Ensenada, L.S. Rose 60083, 26 Aug. 1960, Topotype
Malvastrum wrightii Gray, Mem. Am. Acad. Arts & Sc., N.S., 4: 21. 1849
U.S.A.: Texas, New Braunfels, ? Wright, July 1860, ? Topotype
Mandevilla attenuata Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 89-90. 1920
Columbia: Santa Marta, H.H. Smith 1663 (1898-1901), ? Isotype
Manettia pectinata Sprague, Bull. Herb. Boissier 5: 836. 1905
Columbia: Santa Marta, H.H. Smith 1665, 1898-1901, ? Isotype
Manettia smithii Sprague, Bull. Herb. Boissier 5: 267. 1905
Columbia: Santa Marta, H.H. Smith 1393, 1898-1903, ? Isotype
Manihot intermedia Weatherby, Proc. Amer. Acad. 45: 427. 1910
Mexico: Guerrero, Iguala Canyon, C.G. Pringle 13938, 29 July 1907, Isotype
Manilkara letestui Aubr. & Pelleg., Nat. Syst. Paris 16: 234. 1961
GABON: Ngon, entre l'Ogooué et Cameroun, M.G. LeTestu 9322, 1932-1934, Isotype
Mannagettaea ircutensis Popov, Not. Syst. Herb. Inst. Bot. Acad. Sci. URSS 16: 10. 1954
U.S.S.R.: Burjato-Mongolia, ad fl. Irkut, Popov. & Bardunov, 22 July 1953, (Fl. ex. CCCP 3849), Isotype
Mapourea biacuminata Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 136-137. 1920
Columbia: Santa Marta, H.H. Smith 1826 (1898-1901), ? Isotype
Marcia laruotteana Camb. var. australis Legrand, Flora Ilustr. Catar 1. Fasc. Mirt.: 317. 1969
Brazil: Mun. Abelardo Luz 4 km north of Abelardo Luz, Smith & Retz 12883, 23 Oct. 1964, Publication not Available
Marina stilligera Barneby, Mem. N.Y. Bot. Gard. 27: 130-131. 1977
Mexico: Mexico, Valle de Bravo to Colorines, Ripley & Barneby 14876, 1 Dec. 1967, Paratype
Marrubium alternidens Rech. fl. Öseterr. Bot. Zeitschr. 99: 37- 39. 1952
Iran: Khorasan, inter Kain et Birdjand, K.H. & F. Rechinger 4165, 26 May 1948, Paratype
Marrubium ayardii Maire, Bull. Soc. Sc. Nat. Maroc. 8: 139. 1928 [1929]
MoroccoMOROCCO: Moyen Atlas Central, Mathez et al., 7 juillet 1963, Topotype
Marsdenia asclepioidea Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 100-101. 1920
Columbia: Santa Marta, H.H. Smith 1667 (1898-1901), ? Isotype
Marsdenia ecorpuscula Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 99-100. 1920
Columbia: Santa Marta, H.H. Smith 2094 (1898-1901), ? Isotype
Marsdeni pringlei Watson, Proc. Amer. Acad. 25: 158. 1890
Mexico: Nuevo Leon, near Monterrey, C.G. Pringle 10190, 5 June 1906, Topotype
Mascagnia americana Bert in DC. Prodr. 1:585. 1824
Columbia: Santa Marta, H.H. Smith 336, 1898-1901, Isotype
Mascagnia nervosa Ndz., Arb. Inst. Braunsb. 3: 11-12. 1908
Columbia: Santa Marta, H.H. Smith 344, 1898-1901, Isotype
Mascarenhasia aborescens A.DC., Prodr. 8: 488. 1844
Madagascar: l'Ankara, M.R. Decary 14.53f, 24 July 1939, Topotype
Mascarenhasia lisianthiflora A.DC., Prodr. 8: 487. 1844
Madagascar: M.R. Decary 7800, 22 May 1930, Topotype
Matthiola porphyrantha Rech. f., Aell., Esfand., Phyton 3: 61. 1951
Iran: Kerman et Fars, inter Saidabad (Sirdjan) et jugum Cah Coghuk (Cafut), Rechinger et al. 3170, 28 Apr. 1948, Isotype
Maytenus longipes Briq., Annuaire Conserv. Jard. Bot. Genève 20: 361. 1919
Columbia: Santa Marta, H.H. Smith 454, 1898-1901, ? Isotype
Medicago lesinsii E. Small, Can. J. Bot. 63(4): 733-734. 1985
Cultivated: Canada, Central Experimental Farm, Ottawa, (from Algeria), E. Small M1149, 1984, Holotype
Medicago pironae Vis., Obs. in Catal. sem. in horto bot. Patavino lect. anno 1885: 8
Jugoslavia: ad Tolmein in valle fluvii Isonzo, Kammerer (Fl. ex Aust-Hung. 803), Topotype
Medicago sativa L. f. prolifera Dore, Can. Field-Nat. 73: 150. 1959
Canada: Manitoba, Gilbert Plains (cult.), W.E. Sackston, 7 Sept. 1950, Holotype
Melampodium arvense Robinson, Proc. Amer. Acad. 36: 464. 1901
Mexico: Federal District, Valley of Mexico, C.G. Pringle 8610, 7 Sept. 1901, Topotype
Melampyrum angustissimum Beck, Verh. der Zool.-botan. Ges. in Wien 32: 187. 1883
Austria: montis Schneeberg in loco Thalhofriese dicto, Beck, (Fl. ex. Aust.-Hung. 627), Topotype
Melampyrum grandiflorum Kerner, Sched. Fl. Exsicc. Aust.-Hung. 2: 114
Austria: montis Semmering, A. Kerner (Fl. Ex. Aust.-Hung. 626), Isotype
Melampyrum hoermannianum K. Maly, Magyar Bot. Lap. 7: 231. 1908
Bosnia: pr. Sarajevo, K. Maly, May 1904, Type Collection Material
Melampyrum paradoxum Ronniger & Schinz in Schinz & Keller Fl. Schweiz, ed. 3, 1: 489. 1909
Austria: Stiria, ad Ramsau prope Schladming, A.V. Hayek, July 1911, Topotype
Melampyrum pratense L. var. hians Druce, Publication unknown
England: Somerset, C.E. Salmon, 28 July 1898, ? Type Collection Material
Melia azedarck L. var. intermedia Makino, Publication unknown
Japan: Kochi Pref., Godaisan, Kochi City, T. Makino, 13 Sept. 1913, ? Type Collection Material
Melia azedarach L. var. toosendan Makino, Publication unknown
Japan: Kochi Pref., Godaisan, Kochi City, T. Makino, Dec. 1892, ? Type Collection Material
Melica ×aschersonii M. Schulze, Mit. Bot. Ver. Jena 7: 38. 1889
Germany: Jena, Herb. M. Schulze, 1890, Topotype
Melica geyeri Munro var. aristulata J.T. Howell, Leafl. West. Bot. 4: 245. 1946
U.S.A.: California, Marin Co., J.T. Howell 23185, 18 May 1947, Topotype
Melica teneriffae Hackel, Bot. Jahrb. Engler 9: 153. 1888
Canary Islands: Nivaria, Icod de los Vinos, E.R. Sventenius, (Fl. Sel. Can. 199), 3 July 1949, Topotype
Melica uniflora Retz var. pallida Beckh., Publication unknown
Germany: Frakfurt, Beckhaus, June 1882, ? Type Collection Material
Melilotus alba Desr. f. prolifera Dore, Can. Field-Nat. 73: 151. 1959
Canada: British Columbia, Armstrong (cult.), S.R. Noble, 19 Sept. 1947, Holotype
Melilotus barcinomensis Sennen, Bol. Soc. Arag. 11: 189. 1912
Spain: Barcelone, Tibidabo, Sennen, June 1912, Topotype
Memecylon lanceolatum Blanco, Fl. Filip. ed. I. 301. 1896
Filipine Islands: Rizal Province, Luzon, Merrill, June 1916 (Speciea Blancoanae No. 975), Topotype
Menispermum mexicanum Rose, Contr. U.S. Nat. Herb. 13: 302. 1911
Mexico: Sierra Madre near Monterey, C.G. Pringle 10378, 8 July 1907, Isotype
Menodora scabra Gray, Am. Journ. Sci. Ser. I. 14: 45. 1852
U.S.A.: New Mexico, Santa Fe, A.A. & E.G. Heller 3826, 8 July 1897, Topotype
Mentha alpigena A. Kerner, Sched. Fl. Exsicc. II. 121
Austria: Tirolia centralis, prope Matreium, A. Kerner, (Fl. Ex. Aust.-Hung 643), Topotype
Mentha aquatica L. var. duriuscula Top. f. gnaphalifrons Top, Publication unknown
ITALY: Lucania, Potenza, O. Gavioli, Sept. 1924, (Menthotheca universa, Petrak & Topitz 147), ? Type Collection Material
Mentha aquatica L. var. erromena Top., Publication unknown
France: Puy-de Dome, ad Ravel, prope Lesoux, M. Chassagne, Sept. 1923, (Menthotheca universa, Petrak & Topitz 74), ? Type Collection Material
Mentha aquatica L. var. filarszkyana Top., Publication unknown
Hungary: Lagymanyos, N. Filarszky, Aug. 1925, (Menthotheca universa, Petrak & Topitz 127), ? Type Collection Material
Mentha aquatica L. var. polyanthetica Top., Publication unknown
Hungary: Györ, S. Polgar, Aug. 1923, (Menthotheca universa, Petrak & Topitz 69), ? Type Collection Material
Mentha arvensis L. f. angustifolia Fraser, Publication unknown
ENGLAND: Surrey, Puttenham, J. Fraser, 26 Feb. 1928, ? Type Collection Material
Mentha arvensis L. var. foliicoma Op. f. setigera Top., Publication unknown
Austria: Bavaria centralis, München, K. Harz, Sept. 1923, (Menthotheca universa, Petrak & Topitz 61), ? Type Collection Material
Mentha arvensis L. var. nobilis Top. f. pseudagrestis Top, Publication unknown
Austria: Bavaria, Pommelsbrunn, J. Meister, July 1912, (Menthotheca universa, Petrak & Topitz 115), ? Type Collection Material
Mentha arvensis L. var. pascuorum Top., Publication unknown
Germany: Siegen, A. Ludwig, Aug. 1926, (Menthotheca universa, Petrak & Topitz 108), ? Type Collection Material
Mentha arvensis L. var. villosa (Benth.) Stewart f. pedunculata D. Löve & Bernard, Sv. Bot. Tidskr. 53: 424. 1959
Canada: Manitoba, Otterburne à l'est, J.P. Bernard 5433, 23 juillet 1956, Holotype FRAGMENT
Mentha canadensis L. var. lanata Pet., Publication unknown
U.S.A.: Washington, Klicketat Co., Bingen, W.N. Suksdorf, Aug. 1920, (Menthotheca universa, Petrak & Topitz 97), ? Type Collection Material
Mentha canadensis L. var. montanensis Pet., Publication unknown
U.S.A.: Montana, Park Co., Cottonwood Creek, W.N. Suksdorf, Aug. 1921, (Menthotheca universa, Petrak & Topitz 99), ? Type Collection Material
Mentha canadaensis L. var. suksdorfiana Pet., Publication unknown
U.S.A.: Washington, Klickitat Co., Bingen, W.N. Suksdorf, (Menthotheca universa, Petrak & Topitz 96), ? Type Collection Material
Mentha candicans Crantz, Stirp. Austriacae 4: 330. 1769
Austria: in locis paludosis Vindebonensis, Woloszczak, (Fl. ex. Aust.-Hung 642), Topotype
×Mentha cordifolia (Opiz) Fraser var. brevifolia Fraser, Publication unknown
England: Surrey, Albrook (cult. at Kew). J. Fraser, 27 July 1934, ? Type Collection Material
×Mentha cordifolia (Opiz) Fraser var. dourensis Fraser, Publication unknown
Scotland: The Dour, New Aberdour, N Aberdeen, (cult. at Kew), J. Fraser, 20 Aug. 1932, ? Type Collection Material
Mentha dentata Mnch. f. pascuorum Pet., Publication unknown
Europe: M. Weisskirchen, Jesernik, F. Petrak, Aug. 1924 (Menthotheca universa, Petrak & Topitz 101), ? Type Collection Material
Mentha dumetorum Schult. var. arvorum Pet., Publication unknown
ITALY: Lucania, Pignola, O. Gavioli (Menthotheca universa, Petrak & Topitz 138), ? Type Collection Material
Mentha dumetorum Schult. var. griseoviridis Top., Publication unknown
ITALY: Lucania, Potenza, O. Gavioli, Aug. 1925, (Menthotheca universa, Petrak & Topitz 137), ? Type Collection Material
Mentha dumetorum Schult. var. kupcsokiana Top. f. gavioli Pet.
Italy: Lucania, Pignola, O. Gavioli, Sept. 1923, (Menthotheca universa, Petrak & Topitz 100), ? Type Collection Material
Mentha dumetorum Schult. var. lucanica Pet., Publication unknown
Italy: Potenza, O. Gavioli, Aug. 1924 (Menthotheca universa, Petrak & Topitz 135), ? Type Collection Material
Mentha gentilis L. var. cardiaca Bak. f. gratiosa Top., Publication unknown
Austria: Bavaria centralis, Nürnberg, J. Meister, Aug. 1920 (Menthotheca universa, Petrak & Topitz 89), ? Type Collection Material
Mentha gentilis L. var. resinosa Op. f. pseudorubra Top., Publication unknown
Germany: Siegen, unterm Hain, A. Ludwig, Aug. 1926, (Menthotheca universa, Petrak & Topitz 107), ? Type Collection Material
×Mentha hircina (Hull) Fraser var. hirsuta Fraser, Publication unknown
Scotland: The Dour, New Aberdour, N Aberdeen (cult. at Kew), J. Fraser, 10 Aug. 1923, ? Type Collection Material
Mentha kerneri Top. var. berolinensis Pet., Publication unknown
Germany: Dahlem, (cult. in Hort. Bot. Berolinensis), R. Pilger, Aug. 1921, (Menthotheca universa, Petrak & Topitz 94), ? Type Collection Material
Mentha kerneri Top. var. cinerascens H. Br. f. parvifolia Pet., Publication unknown
Europe: Moravia orientalis, Mähr-Weisskirchen, ad ripam rivuli pagi Ohrensdorf, F. Petrak, Aug. 1922, (Menthotheca universa, Petrak & Topitz 81), ? Type Collection Material
Mentha kerneri Top. var. cinerascens H. Br. f. thuringiaca Top., Publication unknown
Germany: Saxonia, Zittau, O. Weder, Aug. 1921, Sept. 1922, (Menthotheca universa, Petrak & Topitz 68, 79), ? Type Collection Material
Mentha longifolia Huds. var. ensidens Bq. f. isodonta Pet., Publication unknown
Europe: Moravia orientalis, Mähr.-Weisskirchen, F. Petrak, Aug. 1922, (Menthotheca universa, Petrak & Topitz 56), ? Type Collection Material
Mentha longifolia Huds. var. paramecophyllon Top., Publication unknown
Hungary: Com. Pest, ad pag. Pirto, G. v. Moesz, Aug. 1925, (Menthotheca universa, Petrak & Topitz 126), ? Type Collection Material
Mentha longifolia Huds. var. planitiensis Top., Publication unknown
ITALY: Lucentia, Potenza, ad rivum Verdaruolo, O. Gavioli, July 1924, (Menthotheca universa, Petrak & Topitz 128), ? Type Collection Material
Mentha paludosa Nees var. nemorisaga H. Br., Publication unknown
Europe: Weisskirchen, F. Petrak, Aug. 1909, ? Type Collection Material
Mentha palustris Mnch. var. ligeriana Top., Publication unknown
Germany: Hoke Eifel, ad Bertrich, W. Frieberg, Sept. 1922, (Menthotheca universa, Petrak & Topitz 112), ? Type Collection Material
Mentha palustris Mnch. var. palustris Top., Publication unknown
Germany: Hessen Nassau, ad Niedersheld prope Dillenburg, A. Ludwig, Aug. 1926, (Menthotheca universa, Petrak & Topitz 109), ? Type Collection Material
Mentha palustris Mnch. var. sigesiana Top. f. glabriuscula Top., Publication unknown
Europe: Moravia orientalis, Mähr-Weisskirchen, F. Petrak, Aug. 1922, (Menthotheca universa, Petrak & Topitz 54), ? Type Collection Material
Mentha palustris Mnch. var. somogyana Top. f. posoniensis Top., Publication unknown
Europe: Moravia orientalis, Mähr-Weisskirchen, F. Petrak, Aug. 1914, Sept. 1922, (Menthotheca universa, Petrak & Topitz 55, 84), ? Type Collection Material
Mentha perciliata Braun & Fleischer, Publication unknown
Europe: Bohemia, M. Fleischer, 1903, ? Type Collection Material
Mentha petrakii H. Br., Allg. Bot. Zeitschr. 16: 116. 1910
Europe: Moravia orientalis, Mähr.-Weisskirchen, F. Petrak (Menthothica universa, Petrak & Topitz 77), Aug. 1923, ? Topotype
Mentha piperita L. var. subcordata Fraser, Publication unknown
ENGLAND: W Gloucester, Alverston, J. Fraser, 6 Sept. 1922, ? Type Collection Material
Mentha pudegium L. var. erectum Wirtg. f. communis Top., Publication unknown
France: Puy-de-Dome, Crevant, M. Chassagne, July 1924, (Menthotheca universa, Petrak & Topitz 124), ? Type Collection Material
Mentha rotundifolia L. var. craspedota Bq. f. lezouxensis Pet., Publication unknown
France: Puy-de-Dome, Lezoux, M. Chassagne, July 1924, (Menthotheca universa, Petrak & Topitz 121, 122), ? Type Collection Material
Mentha rotundifolia L. var. crenatophylla Top., Publication unknown
France: Puy-de-Dome, Crevant, M. Chassagne, Aug. 1924, 1925, (Menthotheca universa, Petrak & Topitz 144, 145), ? Type Collection Material
Mentha rotundifolia L. f. italica Pet., Publication unknown
ITALY: Ravello, in convalle Dragone, Cicalese com Lacaita, Aug. 1924, (Menthotheca universa, Petrak & Topitz 148), ? Type Collection Material
Mentha rotundifolia Huds. f. luxurians Felix, Publication unknown
France: Cher-Thénioux, A. Félix, Sept. 1923, ? Type Collection Material
Mentha seriata A. Kerner, Sched. Fl. Exsicc. 2: 121
Hungary: Dalmatia, in paludosis ad Spalatum, Pichler, (Fl. ex. Aust.-Hung. 644), Isotype
Mentha verticillata L. var. coenogena Top. f. parvula Pet., Publication unknown
Austria: Bavaria, Leutstetten, K. Harz, Sept. 1924, (Menthotheca universa, Petrak & Topitz 116), ? Type Collection Material
Mentha verticillata L. var. elata Host f. rivularis Top., Publication unknown
Hungary: Kom. Veszprem, prope Bakonvszentlaszlo, S. Polgar, Aug. 1922, (Menthotheca universa, Petrak & Topitz 73), ? Type Collection Material
Mentha verticillata L. var. serotina Host f. amblyphylla Pet., Publication unknown
Europe: Moravia orientalis, Mähr-Weisskirchen, F. Petrak, Aug. 1922, (Menthotheca universa, Petrak & Topitz 82), ? Type Collection Material
Mentha verticillata L. var. serotina Host f. salicetorum Pet., Publication unknown
Europe: Moravia orientalis, Leipnik, F. Petrak, Aug. 1922, (Menthotheca universa, Petrak & Topitz 60), ? Type Collection Material
Mentha viridis L. var. sinuosa Top., Publication unknown
U.S.A.: Washington, Klickitat Co., Bingen, W.N. Suksdorf, Aug. 1920, (Menthotheca universa 65), ? Type Collection Material
Mentha viridisL. var. tauscheri Top., Publication unknown
Germany: Dahlem (cult. Hort. Bot. Berolinensi), R. Pilger, Aug. 1921, ? Type Collection Material
Mentzelia pacardiae Glad, Madrono 23: 289. 1976
U.S.A.: Oregon, Halheur Co., Leslie Gulch Road, J.B. Glad 75-6, 24 May 1975, Topotype
Mercurialis reverchonii Rouy, Bull. Soc. Bot. Fr. 34: 441. 1887
Spain: Baetica, Cadiz, Sierra de Palma, Gros, 8 May 1922, Topotype
Mertensia fendleri Gray, Am. Journ. Sc. Ser. II, 34: 339. 1862
U.S.A.: New Mexico, Santa Fe Canyon, 9 miles east of Santa Fe, A.A. & E.G. Heller 3640, 2 June 1987, Topotype
Mertensia jenisseensis M. Pop., Not. Syst. Herb. Inst. Bot. Acad. Sci. RRSS 15: 256. 1953
U.S.S.R.: Prov. Irkutsk, distr. Balagansk, N. Maltzev, 27 June 1907 (Herb. URSS 3566), Isotype
Mertensia longiflora Greene f. alba Boivin, Nat. can. 93: 1061. 1966
Canada: British Columbia, Niskonlith Indian Reserve, Chase, J. Grant 9, 9 May 1960, Holotype
Messerschmidia sibirica L. ssp. angustior Kitagawa, Publication unknown
China: Manchuria, T. Makino, 20 May 1941, ? Type Collection Material
Metastelma atrovirens Rusby, Descriptions of Three Hundred New Species of South American Plants, pp. 95-96. 1920
Columbia: Santa Marta, H.H. Smith 1680 (1898-1901), Isotype
Metastelma pallidum Rusby, Descriptions of Three Hundred New Species of South American Plants, p. 96. 1920
Columbia: Santa Marta, H.H. Smith 1900 (1898-1901), Isotype
Metrosideros parviflora C.T. White, Journ. Arn. Arb. 23: 80. 1942
New Guinea: Bernhard Camp, Idenburg River, Brass & Versteegh 12570, Feb. 1939, Isotype
Meum athamanticum Jacq. f. pratense Lehmann, Publication unknown
Europe: bei Weissbach, A. Lehmann, June 1907, ? Type Collection Material
Meum athamanticum Jacq. f. silvestre Lehmann, Publication unknown
Europe: bei Weissbach, A. Lehmann, June 1907, ? Type Collection Material
Micrandra lopezii R.E. Schultes, Bot. Mus. Leafl. Harvard Univ. 15: 204-210. 1952
Brazil: Rio Vaupes, at base of Serra tukano, Schultes & Lopez 9725, 8 Feb. 1948, Isotype
Microlepia marginata C. Chr. var. prinnata Makino, J. Jap. Bot. 3: 47. 1926
Japan: Kanagawa Pref., Manazuru-cho, T. Makino, 12 Dec. 1926, Isotype
Microlepia pseudo-strigosa Makino, Bot. Mag. Tokyo 28: 337. 1914
Japan: Kanagawa Pref., Mt. Jimmuji, T. Makino, 1920, Topotype
Micromeria benthamii Webb & Berth., Phyt. Canar. 3: 77. 1836
Canary Islands: Gran Canaria, Crux de Tejeda, E. Asplund 1401, 24 May 1933, Topotype
Micromeria linkii Webb & Berth., Phyt. Canar. 3: 79. 1845
Canary Islands: Gran Canaria, Cuesta de Silva, E. Asplund 1366, 23 May 1933, Topotype
Micropus discolor Pers., Syn. Sp. Plant. 2: 423. 1807
Spain: Castella Nova, Aranjuez, versus Soto Mayor, P. Font i Quer et Gros, 14 May 1924, Topotype
Microstylis elegantula Schltr., Fedde Repert. Nov. Sp. 3: 17. 1906
Mexico: Morelos, Cuernavaca, C.G. Pringle 8953, 21 July 1904, Topotype
Mikania clematiflora Rusby ex Robinson, Contr. Gray Herb. 61: 13. 1920
Columbia: Santa Marta, H.H. Smith 634, 1898-1901, ? Isotype
Mikania flabellata Rusby ex Robinson, Contr. Gray Herb. 61: 14. 1920
Columbia: Santa Marta, H.H. Smith 2002, 1898-1901, ? Isotype
Mikania miconioides Robinson, Contr. Gray Herb. 61: 19. 1920
Columbia: Santa Marta, H.H. Smith 631, 1898-1901, ? Isotype
Mikania ovalis Griseb., Fl. Brit. W. Ind. 363. 1861
Domiinca: Morne Anglais (Mt. Conliabon), W.H. & B.T. Hodge 2266 (Pl. Ex. Gray. 1098), 21 Mar. 1940, Topotype
Mimulus guttatus DC. ssp. haidensis Calder & Taylor
Canada: British Columbia, Queen Charlotte Islands, Graham Island, Lepas Bay, Calder et al. 22624, 17 July 1957, Paratype; Stapleton on west side of Shields Bay, Rennell Sound, Calder & Taylor 23345, 9 Aug. 1957, Paratype; Yakoun River bridge ca. 4.5 miles south of Port Clements, Calder et al. 35035, 14 June 1964, Paratype; Mamin River Delta at Juskatla, Masset Inlet, R.L. Taylor 112, 15 June 1957, Paratype; Moresby Island, Takakia Lake, south of Moresby Logging Camp, Calder et al. 23063, 29 July-2 Aug. 1957, Paratype; Calder & Taylor 36284, 25-30 July 1964, Paratype; mountain above Mosquito Lake near head of Cumshewa Inlet, Calder & Taylor 23697, 24 Aug. 1957, Paratype; between Peel Inlet and Cumshewa Inlet, Calder & Taylor 35184, 19 June 1964, Paratype
Miliusa filipes Merr. & Chun, Sunyatsenia 2: 223. 1935
China: Hainan, C. Wang 34228, 25 Sept. 1933, Topotype
Mimophytum omphalodoides Greenman, Proc. Amer. Acad. 4: 242-243. 1906
Mexico: Hidalgo, Honey Station, C.G. Pringle 15612, 17 June 1908, Topotype
Mimosa martensis Britton & Rose in Britton & Killip, Ann. New York Acad. Sci. 35: 152. 1936
Columbia: Santa Marta, H.H. Smith 714, 1898-1901, ? Isotype
Mimulus guttatus DC. ssp. haidensis Calder & Taylor, Can. J. Bot. 43: 1398-1399. 1965
Canada: British Columbia, Queen Charlotte Islands, Moresby Is., Calder & Taylor 36391, 31 July 1964, Holotype
Minuartia yukonensis Hulten, Arkiv för Botanik ser. 2, 7: 52. 1967
Canada: Yukon Territory, near mouth of Klondike River near Dawson, Calder & Billard 3359, 28 June 1949, Isotype
Mirabilis jalapa L. f. dichlamydomorpha (Makino) Hiyama
Japan: Prov. Musashi, Oizumi, Tokyo (cult.), T. Makino, 6 Sept. 1934, ? Type Collection Material
Mirabilis macfarlanei Constance & Rollins, Proc. Biol. Soc. Wash. 49: 148-149. 1936
U.S.A.: Oregon, Wallowa Co., Lower Cottonwood Canyon between mouth of Somer's Creek and Pittsburg Landing, F.G. Meyer 243, 15 May 1936, Topotype and PROBABLE Isotype
Mirabilis pringlei Standley, Proc. Am. Acad. 45: 424. 1910
Mexico: Guerrero, Iguala Canyon, C.G. Pringle 10384, 23 July 1907, Isotype
Mitella koshiensis Ohwi, Bull. Nat. Sci. Mus. Tokyo 26: 9. 1949
Japan: Honshu, Miyazaki Shrine in Etchu, Ohwi & Satomi s.n., 21 Apr. 1964, Topotype
Mitropsidium oblanceolatum Burret, Notizbl. Bot. Gart. Berlin 15: 486-489. 1941
Columbia: Santa Marta, H.H. Smith 403, 1898-1901, Isotype
Moehringia muscosa L. var. catalaunica Sen. & Pau., Publication unknown
Spain: Catalogne, Montagnes de Bellmunt, de Cabrera, F. Sennen 960, July 1910, ? Type Collection Material
Moehringia tommasinii Marchesetti, Bollet. d. soc. Adriat. di scienze nat. in Trieste 5(2): 327-329. 1880
Austria: Tergestino, Marchesetti (Fl. ex. Aust.-Hung. 55), Type Collection Material
Moltkia gypsacea Rech. f. & Aellen, Anz. Osterr. Akad. Wiss. Math.-Nat. 87: 89-90. 1950
Iran: Semnan-Damghan, ad Sorkheh prope Semnan, Rechinger & Aellen 2795, 15 Apr. 1948, Isotype
Monachochlamys flagellaris Baker, Journ. Linn. Soc. 20: 217. 1883
Madagascar: M.R. Decary 6994, Topotype
Monarda fistulosa L. ssp. fistulosa Boivin var. longepetiolata Boivin
Canada: Quebec, Pontiac County, Aldfield P., Senn et al. 909, 16 July 1941, Paratype; Gatineau County, Danford Lake, C.F. Dore s.n., 12 Aug. 1943, Paratype; Carleton County, Ottawa, W.H. Minshall s.n., 20 July 1935, Paratype; 2 miles southeast of Bells Corners, C. & E. Frankton 2396, 20 July 1973, Paratype; Prince Edward County, Demorestville, W.H. Minshall 573, 13 July 1939, Paratype; Northumberland County, Heeley Falls on Trent River, W.G. Dore 8643, 13 July 1948, Paratype; Simcoe County, Collingwood, Victorin et al. 45085, 26 août 1933, Paratype; Waterloo County, south of Blair, F.H. Montgomery 321, 9 July 1939, Paratype
U.S.A.: Indiana, Warren County, railroad embankment between Sloan and Road 28, R.C. Friesner 22848, 9 July 1949, Paratype; Indiana, Kosciusko County, North Webster, R.C. Friesner 22246, 10 July 1948, Paratype; Kansas, Lawrence, W.H. Horr E17, 25 June 1934, Paratype; New York, Dutchess County, Green Haven, L.A. Charette 639, 22 Aug. 1946, Paratype
Monarda fistulosa L. var. longepetiolata Boivin, Nat. can. 93: 1061, 1967
Canada: Ontario, Carleton Co., Gloucester Twp. along Rideau River, J.A. Calder 465, 8 Sept. 1946, Holotype
Monarda fistulosa L. var. maheuxii Boivin, Nat. can. 93: 1061. 1967
Canada: Ontario, Rainy River, Ft. Francis, W.G. Dore 9178, 23 Aug. 1948, Holotype
Monarda fistulosa L. var. menthifolia (Graham) Boivin f. russellii Boivin
Canada: Saskatchewan, Edenwold, L.T. Carmichael 83, 8 Aug. 1942, Paratype; Swift Current District, Cabri, Boivin & Alex 9957, 28 juillet 1952, Paratype; Qu'Appelle Valley, B. de Vries 823, 14 July 1960, Paratype; Alberta, Lacombe S., R.H. Dixon 1354, 31 July 1927, Paratype; Waterton Lakes Park, Mt. Crandell, H.A. Senn 2580, 1 Aug. 1946, Paratype
Monarda fistulosa L. var. menthifolia (Graham) Boivin f. russellii Boivin, Nat. can. 93: 1061. 1967
Canada: Saskatchewan, Waldheim, Petrofka Ferry, R.C. Russell S5122, Summer 1951, Holotype
Monarda pectinata Nutt., Journ. Acad. Philad. N.S. 1: 82-83. 1847
U.S.A.: New Mexico, Taos Co., between Barranca and Embudo, A.A. & E.G. Heller 3596, 27 May 1897, Topotype
Monarda pringlei Fern., Proc. Amer. Acad. 36: 501. 1901
Mexico: Nuevo Leon, Sierra Madre, above Monterey, C.G. Pringle 15614, 25 May 1908, Topotype
Monarda punctata L. var. leucantha Nash, Bull. Torrey Bot. Club. 23: 104-105. 1896
U.S.A.: Florida, Manatee Co., Palmetto, G.V. Nash 2456, 21- 23 Aug. 1895, Type Collection Material
Monardella benitensis Hardham, Leafl. West. Bot. 10: 239-241. 1966
U.S.A.: California, San Benito Co., Clear Creek, E.C. Twisselmann 12851, 4 Oct. 1966, Topotype
Monardella lanata Abrams, Muhlenbergia 8: 39. 1912
U.S.A.: California, San Diego Co., near Alpine, L.R. Abrams 4196, 10 July 1912, Topotype
Monnina sanmartensis Ferreyra, Smithsonian Misc. Collect. 121: 33. 1953
Columbia: Santa Marta, H.H. Smith 1480, 1898-1901, ? Isotype
Monochaetum laxifolium Gleason, Amer. J. Bot. 16: 519. 1929
Columbia: Santa Marta, H.H. Smith 774, 1898-1901, ? Isotype
Monochaetum tetrandrum Gleason, Amer. J. Bot. 16: 519. 1929
Columbia: H.H. Smith 761, 1898-1901, ? Isotype
Monolopia stricta Crum, Madrono 5: 259. 1940
U.S.A.: California, Fresno Co., Oil City, L.S. Rose 35070, 26 March 1935, Paratype
Montanola revealii H. Robinson, Phytologia 33: 285. 1976
Mexico: Guerrero, Sierra Madre del Sur, Reveal et al. 4233, 16 Oct. 1975, Isotype
Montanoa serrata Rusby, Descriptions of Three Hundred New Species of South American Plants, p. 151. 1920
Columbia: Santa Marta, H.H. Smith 516, 1898-1901, ? Isotype
Montia alpina Eastw., Leafl. West. Bot. 1: 11. 1932
U.S.A.: Nevada, Tuolumne Co., Mount Dana, J. Clausen 778, 20 Aug. 1933, Topotype
Montia sweetseri Henderson, Rhod. 32: 24. 1930
U.S.A.: Oregon, Curry Co., Humbug Mountain along Brush Cr., Sweetser & Henderson 10193, 30 May 1929, Isotype
Moquilea cuspidata Rusby, Descriptions of Three Hundred New Species of South American Plants, p. 27. 1920
Columbia: Santa Marta, H.H. Smith 1773 (1898-1901), ? Isotype
Morisonia elliptica Rusby, Descriptions of Three Hundred New Species of South American Plants 24. 1920
Columbia: Santa Marta, H.H. Smith 2098, 1898-1901, ? Isotype
Muhlenbergia nebulosa Scribn. ex Beal, Grasses N. Amer. 2: 247. 1896
Mexico: Rio Blanco near Guadalajara, C.G. Pringle 11753, 10 Oct. 1903, Topotype
Muhlenbergia neo-mexicana Vasey, Bot. Gaz. 11: 337. 1886
U.S.A.: New Mexico, Las Vegas, Vasey, Aug. 1886, Type Collection Material
Mundulea pungens R. Viguer in Humbert Not. Syst. 14: 66. 1950
Madagascar: Fort Dauphin, M.R. Decary 10660, 9 Jan. 1933, Publication not available
Muscari botryoides Mill. var. latifolius Rigo, Publication unknown
Europe: Verona, J. Rigo, April 1911, ? Type Collection Material
Muscari kerneri Marchesetti, Bull. Soc. Adr. di sc. nat. 7: 266. 1882
Austria: In ditione Tergestina inter Rojano et montem Terstenicum, Marchesetti, Topotype
Muscari longifolius Rigo, Nuov. Giorn. Bot. Ital. 12: 152. 1905
Italy: Verona, inter Torri et Pai, G. Rigo, Apr. 1911, Topotype
Museniopsis biennis C. & R., Proc. Wash. Acad. 1: 130. 1899
Mexico: Morelos, Cuernavaca, C.G. Pringle 13983, 20 Dec. 1907, Topotype
Myoporum sandwicense A. Gray, Proc. Am. Acad. 6: 52-53. 1862
Hawaiian Islands: Lanai, Lower Naio Gulch, Degener et al. 24206, 20 Aug. 1957, Topotype
Myoporum sandwicense var. degeneri Webster, Publication unknown
Hawaiian Islands: Maui, north mauka of Ulupalakua, O. Degener 12183, 4 July 1927, ? Type Collection Material
Myosotis lazica M. Pop., Spisok Rast. Herb. Fl. U.R.S.S. 12: 48. 1953
U.S.S.R.: Trancaucasiae silvis Adsharicis ad fines Turcicas prope Batumi, M. Popov et al. (Sched. 3579), 24 Apr. 1950, Isotype
Myosotis pyrenaica Pourr., Mem. Acad. Toul. 3: 322. 1788
France: Pyrénées, Herb. Lenormand, Topotype
Myosotis serotina Hulpers, Svensk. Bot. Tidskr. 21: 69-72. 1927
Sweden: Västergötland, A. Hulpers, 16 Aug. 1923, ? Paratype
Myosotis stenantha Gdgr., Publication unknown
France: Rhone, Arnes, M. Gandoger, 1900, ? Type Collection Material
Myosotis sylvatica Hoffm. var. alpestris (F.W. Schmidt.) Koch f. eyerdamii Boivin, Nat. can. 93: 1061. 1967
U.S.A.: Alaska, Raspberry Island, Port Vita, W.J. Eyerdam 3150, 20 July 1939, Holotype
Myosurus minimus L. var. interior Boivin
Canada: Manitoba, Morden, K.W. Neatby s.n., 1927, Topotype; Saskatchewan, Sutherland, R.C. Russell 1276, 10 June 1944, Paratype; Alberta, Mountain View, N.E. Waterton Lakes Park, E.H.Moss 943, 25 June 1940, Paratype; Purple Springs, J.A. Moir s.n., 12 June 1935, Paratype; Magrath, J. Fletcher 50, 21 June 1902, Paratype; fifteen miles north of Wild Horse, Dore & Breitung 12011, 24 July 1950, Paratype; Lethbridge District, Milk River Ridge, 4 miles south of Lethbridge, Dore & Breitung 11707, 17 July 1950, Paratype
U.S.A.: South Dakota, Mallette, J.F. Brenckle 47-504, 8 June 1947, Paratype
Myosotis sylvatica Hoffm. var. alpestris (F.W. Smidt.) Koch f. eyerdamii Boivin
Canada: Alberta, Waterton Lakes National Park, Onion Ridge, A.J. Breitung 17284, 7 Aug. 1953, Paratype
Myosurus minimus L. var. interior Boivin, Bull. Soc. Roy. Bot. Belg. 85: 331. 1953
Canada: Manitoba, Morden, H.H. Marshall 43, 7 June 1943, Holotype
Myrcianthes gigantea Legrand
Argentina: Brasil, Riv. Grande do Sul, San Francisco de Paula, Rambo 30,802, 10 Jan. 1946, Paratype
Myrcianthes gigantea Legrand, Darwiniana 9(2): 300-301. 1950
Argentina: Corpus, Schwarz 1394, 10 Oct. 1945, Paratype
Myrcianthes sessilis McVaugh, Fieldiana, Bot. 29: 495. 1963
Columbia: Santa Marta, H.H. Smith 776, 1898-1901, ? Isotype
Myriocarpa magnifica Rusby, Descriptions of Three Hundred New Species of South American Plants 11. 1920
Columbia: Santa Marta, H.H. Smith 1422, 1898-1901, ? Isotype
Myrsine canariensis Spreng., Syst. 1: 663. 1825
Canary Islands: Nivaria, Icod el Alto, E.R. Sventenius 61, 24 Apr. 1944, Topotype
Myrsine floridana A.DC., Trans. Linn. Soc. 17: 107. 1834
U.S.A.: Florida, Manatee Co., Palmetto, G.V. Nash 2440, 21- 23 Aug. 1895, Topotype
Myrsine lanaiensis Hilleb., Fl. Haw. Is. 281. 1888
Hawaiian Islands: near Na Puukulua, Degener et al. 20020, 19 Aug. 1944, Topotype
Myrsine lessertiana A.DC., Ann. Sc. Nat. Ser. II. 16: 85. 1841
Hawaiian Islands: Kohala, Alakahi Valley, Degener et al. 20164, 27 Aug. 1949, Topotype
Myrsine sandwicensis A. DC., Ann. Sc. Nat. Ser. II. 16: 85. 1841
Hawaiian Islands: Oahu, Kosla Range, Mapoha Valley, C.N. Forbes, 12-19 Feb. 1909, Topotype