Senna organensis var. heterandra H.S.Irwin & Barneby
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Authors
Howard S. Irwin, Rupert C. Barneby
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Authority
Irwin, Howard S. & Barneby, Rupert C. 1982. The American Cassiinae. A synoptical revision of Leguminosae tribe Cassieae subtrib Cassiinae in the New World. Mem. New York Bot. Gard. 35, part 1: 1-454.
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Family
Caesalpiniaceae
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Scientific Name
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Type
Holotypus, HBG = NY Neg. 9686.
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Description
Variety Description - Lvs of var. organensis, but a gland between proximal pair of lfts only; stamens strongly heteromorphic, the filaments of 4 median stamens ±2.5 mm, of 3 abaxial ones 4.5-5.5 mm, the anthers of 4 median stamens 3.8-4.5 mm, of 3 abaxial ones 5-7 mm.—Collections: 3.
Distribution and Ecology - Woodland at 1800 m, known certainly only from Mt. Itatiaia in w. Rio de Janeiro.
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Discussion
The typus and two other known collections of var. heterandra are in flower only, but resemble var. organensis at so many points that we have little doubt as to their affinity. For the present the more highly differentiated androecium appears adequately distinctive.
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Distribution
Rio de Janeiro Brazil South America|