Mimosa gemmulata var. occidentalis Barneby
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Authors
Rupert C. Barneby
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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.
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Family
Mimosaceae
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Scientific Name
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Type
80e. Mimosa gemmulata Barneby var. occidentalis Barneby, var. nov., ab aliis speciei formis pinnis numerosis 27-38 (nec 9-20, raro 29)- jugis usque separata; a M. amnis-atri pinnarum majorum rachi 35-45 (nec 7-18) mm longis foliolisque suis 45-54 (nec 20-
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Synonyms
Mimosa amnis-atri Barneby
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Description
Variety Description - Shrubs and treelets ±1.5-2 m; lf-stks 10-17 cm; pinnae of longer lvs 27-38-jug., the rachis of longer ones 35-45 mm; lfts of longer pinnae 45-54-jug., the larger ones ±2.5-2.8 x 0.6-0.7 mm; longer filaments exserted 6-8 mm; pods sessile, attaining 50 x 6 mm. ±9-seeded (not seen fully ripe).
Distribution and Ecology - In campo cerrado ±800 m, known only from the vicinity of the type-locality near 17°S, 5 3°30'W in e. Mato Grosso (Norte).—Fl. XI-XII. Map 13.
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Discussion
The plants described as var. occidentalis differ from other races of M. gemmulata in elongate leafstalks and multifoliolate pinnae. Leaf-formula without corroboration by other characters is generally not dependable for taxonomic purposes, but var. occidentalis is physically isolated (so far as presently known) 600 km west of var. cristallina and much more distantly so from vars. gemmulata and adamantina which it more nearly resembles in shape of leaflets.
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Distribution
Brazil South America| Mato Grosso Brazil South America|