Abarema leucophylla var. vaupesensis

Title

Abarema leucophylla var. vaupesensis

Authors

Rupert C. Barneby

Scientific Name

Abarema leucophylla var. vaupesensis Barneby & J.W.Grimes

Description

17b. Abarema leucophylla var. vaupesensis Barneby & Grimes var. nov., a var. leucophylla foliolorum formula et flosculis minoribus diversa: foliolorum majorum pinnae 1-2-, foliola plerumque 2-juga; florum periphericorum et terminalis calyx 2-2.5 mm et corolla 3-4 (nec 4.5 et ultra) mm longi; floris terminalis stamina brevius in tubum ±3 (nec 4.5-7.5) cm longum coadunata. Frutices et arbores parvi 1.2-5 m alti. — COLOMBIA. Vaupés: Raudal de Jirijirimo on Río Apaporis, ±0°07'N, 70°36'W, 27.XI.1951 (fl.), Richard Evans Schultes & Isidoro Cabrera 14643. — Holotypus, GH; isotypus, NY.

Characters as given in key to varieties.

In open savanna below 300 m, local at the SW edge of the range of var. leucophylla, on the upper ríos Vaupés and Apaporis in SE Com. Vaupés, Colombia. Map 19. — Fl. IX-XI.

The early collections of A. leucophylla var. vaupesensis were misidentified as Pithecellobium microcalyx, from which they are clearly different in plane or shallowly convex, not mounded and small-pored leaf-nectaries, and by larger calyces, more coriaceous leaflets, and basally dilated filaments of the capitulum’s terminal flower.