Mimosa guilandinae var. duckei (Huber) Barneby

  • Authors

    Rupert C. Barneby

  • Authority

    Barneby, Rupert C. 1991. Sensitivae Censitae. A description of the genus Mimosa Linnaeus (Mimosaceae) in the New World. Mem. New York Bot. Gard. 65: 1-835.

  • Family

    Mimosaceae

  • Scientific Name

    Mimosa guilandinae var. duckei (Huber) Barneby

  • Type

    7c. Mimosa guilandinae (DeCandolle) Barneby var. duckei (Huber) Barneby, stat. nov. M. duckei Huber, Bol. Mus. Goeldi Hist. Nat. 5: 381. 1909.—"Hab. in silvis prope Almeirim [Pará, Brazil], 9.IV.03 leg. A. Ducke (3447)."- Holotypus, MG = F Neg. s.n. + cla

  • Synonyms

    Mimosa duckei Huber, Mimosa micracantha Benth.

  • Description

    Variety Description - Either prickly throughout or some homotinous growth almost unarmed, the stems and lf-stks scurfy-tomentulose with red peltiform stellae elevated on a filiform stalk to 0.1-0.2 mm, the dried lfts dark brown and lustrous above, beneath red-lepidote and thinly pilosulous proximally along primary veins; leaf-stalks (5.5-)8- 17.5 cm, the petiole (4—)4.5—9 cm, the one interpinnal segment (2—)2.7—8 cm; pinnae 2-jug., the rachis of first pair 0.7—3 cm, of second pair 9.5 cm, the one interfoliolar segment 1.3 6.5 cm; lfts of most distal pinnae exactly 2-jug., the blades broadly obliquely elliptic-ovate 4-12 x 2.3-7.5 cm, very obtuse, 3-nerved from pulvinule; flowers 4(-5)-merous, the corolla densely gray-puberulent; pod subsessile, in profile broad-linear or oblong-elliptic ±7-10.5 x 2.5 cm, the valves red-lepidote overall (the scales ± deciduous in age), the articles 6-7 mm long and ± 3-4 times as wide.

    Distribution and Ecology - Climbing into and over trees of regenerating woodland and along margins of primary forest, mostly below 150 m, scattered along and near the Amazon river downstream from Tefé in Amazonas (±65°W) to lower rios Tapajós and Jarí in Pará, n. on rio Negro to Barcellós and to centr. Amapá near 1°N; and somewhat isolated on middle Suriname River near 5°N in Surinam.—Fl. XII-VI(-?).— Akamaka (Surinam). Map 4.

  • Discussion

    The var. duckei is rather strongly characterized by few, exceptionally ample leaflets, indumentum of distinctly stalked red scales, and gray-puberulent flower-buds.

  • Distribution

    Suriname South America| Brazil South America| Amazonas Brazil South America| Pará Brazil South America|