Mimosa acantholoba var. acantholoba

  • Title

    Mimosa acantholoba var. acantholoba

  • Authors

    Rupert C. Barneby

  • Scientific Name

    Mimosa acantholoba (Humb. & Bonpl. ex Willd.) Poir. var. acantholoba

  • Description

    50e. Mimosa acantholoba (Willdenow) Poiret var. acantholoba. M. acantholoba Poiret, 1810, l.c., sens. str. Acacia acantholoba Humboldt & Bonpland ex Willdenow, Sp. pl. 4: 1089. 1806.—"Habitat in America meridionali.", but according to Humboldt, Bonpland & Kunth, Nov. gen. sp. 6: 279. 1824: ". . . prope Guayaquil Quitensium [Ecuador]."—Holotypus, B-WILLD 19192, seen in Microform! isotypus, Bonpland 3800, P (hb. Bonpland.)!

    Acacia courrantiana DeCandolle, Prodr. 2:465.1825.— "Patria . . . ign[ota]... in hort. Canariensi a cl. Ant. Courrant observata et mecum . . . commun[icata]."—Typus not seen; equated with M. acantholoba by Bentham, 1875: 426.

    M. eurycarpoides B. L. Robinson, Proc. Amer. Acad. Arts 36:472. 1901, ex parte, exclus. char, fruct.; vide Robinson, Proc. Boston Soc. Nat. Hist. 31: 258. 1904.—"in the foothills of the Sierra Madre, near Colomas [Calomos], State of Sinaloa, Mexico, 21 July, 1897."—Holotypus, US!; clastotypus (fragm), NY!—Neomimosa eurycarpoides (B. L. Robinson) Britton & Rose, N. Amer. Fl. 23(3): 172. 1928.— Equated with M. acantholoba by Grether, 1987: 309. Neomimosa russellii Britton & Rose, N. Amer. Fl. 23(3): 173. 1928.—"Rosario, Sinaloa, August 4, 1910, Rose, Standley & Russell 14555."—Holotypus, US! = NY Neg. s.n. — Equated with M. acantholoba by Grether 1987: 309.

    M. acantholoba sensu Bentham, Bot. voy. Sulphur 90. 1844; 1875: 426; Macbride, 1943: 86; Rudd in Wiggins & Porter, Fl. Galápagos Is. 651. 1971.

    Characters of the species, as modified by key to varieties.

    In thorn-scrub, on brushy stream-banks and in temporarily wet or flooded savanna thickets, surviving in pasture hedgerows and along roadside fences, below 300 m, locally plentiful in arid lowlands of Pacific Ecuador s. from s. depto. Esmeraldas and in adj. n.-w. Peru (Tumbes, Piura and Lambayeque), lat. 0°30'N-6°S; Galápagos Is. (S. Cristóbal); and disjunct on the coastal plain and lower foothills of Sa. Madre in Sinaloa, Mexico (valley of río de Buluarte, near 23°N).—Fl. in S. America primarily X-III, sporadically through the year. Map 7.