Chloroleuson mangense var. tetrazyx

Title

Chloroleuson mangense var. tetrazyx

Author(s)

Rupert C. Barneby

Scientific Name

Chloroleucon mangense var. tetrazyx Barneby & J.W.Grimes

Description

10f. Chloroleuson mangense var. tetrazyx Barneby & Grimes, var. nov., ab aliis speciei formis foliolis tam paucis quam amplissimis cujusque pinnae distalis (3-)4-jugis, 15-22 x 11-14 mm usque diversa.—VENEZUELA. Bolívar, depto Heres: tramo inferior del río Paragua, entre río Chiguaó y Caño el Gato, 31.I.1980 (fr.) L. Marcano Berti in MER 43-980. — Holotypus, MER 33690.

Trees ±2 m, glabrous; perules 2-2.5 mm; If-for- mula ii—iii/(3—)4, the larger lfts 15-22 x 11-14 mm. Pods ±12 x 0.75 cm.

In xeromorphic scrub woodland at 200-300 m along Río Carom and affluent streams in the districts of Heres and Piar, E to foothills of Altiplanície de Nuria, state of Bolívar, Venezuela. — Map 42.

The var. tetrazyx is clearly different from var. vincentis, the form of Ch. mangense prevalent in Venezuela north of the Orinoco, in the few, very large, glabrous leaflets and in the relatively narrow pod. It has more in common with the distantly allopatric var. lentiscifolium, but even fewer and ampler leaflets.