Abarema josephi Barneby & J.W.Grimes
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Authors
Rupert C. Barneby
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Authority
Barneby, Rupert C. & Grimes, James W. 1996. Silk tree, guanacaste, monkey's earring: a generic system for the synandrous Mimosaceae of the Americas. Part I. Abarema, Albizia, and allies. Mem. New York Bot. Gard. 74: 1-292.
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Family
Mimosaceae
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Scientific Name
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Type
COLOMBIA. Comisaría del Caquetá: Cordillera Oriental, vertiente orental, Quebrada del Río Hacha, bosques en Ruidosa, 2000 m, 26 Mar 1940 (fl jun), J. Cuatrecasas 8707. — Holotypus, US 1796398; isotypus, 1299131 = photo (s.n.), NY.
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Description
Species Description - Macrophyllidious trees 6 m, the young stems densely brownish golden-velutinous, the stiffly papery bicolored lfts brown-olivaceous and strigulose along major veins above, beneath pallid and thinly strigulose overall, the flower-spikes arising singly from the axil of coeval lvs and surpassed by them. Stipules 0. Lf-formula ii-iii/5-7, the lfts 44—68 per lf; lf-stks 4.5-8.5 cm, the petiole 30-40 x 1.8-2.6 mm, the longer interpinnal segments 2-2.5 cm; petiolar nectaries between each pair of pinnae sessile orbicular, shallowly cupular 0.8-1.4 mm diam, and similar ones between 1-3 furthest pairs of lfts; pinnae distally accrescent, the rachis of furthest pair 10-12 cm, the interfoliolar segments ±14—19 mm; pulvinules 1.5-2 x 1-1.2 mm; lfts strongly accrescent distally, subsymmetrically ovate or broad-elliptic from inequilaterally cordate or broadly cuneate base, very shortly or obscurely deltate-acuminate at apex, the distal pair 4.5-6.5 x 2.6-3.2 cm, 1.7-2.1 times as long as wide; the midrib almost straight, the 6-7 pairs of major secondary veins brochidodrome well within the revolute margin, these and a reticulum of venules all immersed or engraved on upper face, sharply raised beneath. Spikes (few seen) 70-95-fld, the peduncle and rachis together ±9 cm; bracts 0.4-0.6 mm, deciduous; fls sessile, subhorizontal, the 5-merous perianth brown-velutinous overall; calyx campanulate ±2.2 x 1.6 mm, the depressed-deltate teeth 0.3-0.5 mm; corolla tubular slightly dilated distally 6.5 mm, the ovate unequal lobes 1-1.7 x 1.2 mm; androecium 35- merous ±11 mm, the tube a little shorter than corolla, the filaments presumably white when fresh, brownish when dried; ovary narrowly ellipsoid, conical at apex, glabrous at anthesis. Pods unknown.
Distribution and Ecology - In montane woodland at 2000 m, known only from the type locality near the W boundary of Comisaría del Caquetá at ±1°52'N, 75°40/W in Colombia. — Map 24A. — Fl. III-IV(-?).
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Discussion
Abarema josephi is distinguished from the nearly related A. lehmannii by higher leaf-formula and consequently by more numerous, smaller leaflets. Additional collections, and mature fruits, are required to confirm its specific status. The species is dedicated to Dr. Jose Cuatrecasas, whose name, like that of Celestino Mutis, is imperishably connected with the Colombian flora.
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Distribution
Caquetá Colombia South America|