STANDLEY—TROPICAL AMERICAN PHANEROGAMS, 109 
beneath abundantly hirsute with soft white or tawny hairs; inflorescence consisting of 
numerous short-peduncled terminal racemes, these 4 to 8 cm. long, loosely many- 
flowered, the rachises abundantly hirtellous with tawny hooked hairs; bracts similar 
in form and pubescence to the stipules, large, conspicuous before anthesis, early 
deciduous; pedicels slender, ascending, about 10 mm. long; calyx 3 mm. long, pur- 
plish, hirsute, the upper lobe triangular-ovate, acutish; corolla 10 mm. long, bright 
deep purple; loment short-stipitate, the stipe slightly shorter than the calyx; joints 
4 to 6, 4 to 4.5 mm. long, with a central isthmus, rhombic-oval, with more or 
less contorted edges, thick and turgid, obscurely reticulate, sparingly uncinate- 
puberulent. 
Type in the U. 8. National Herbarium, no, 675728, collected on open, brushy, steep 
slopes, Cuesta de Cerro Quemado, eastern slope of Chiriqui Volcano, Panama, altitude 
1,900 meters, March 11, 1911, by William R. Maxon (no. 5370). Additional material 
is mounted on sheet 675727. 
Also collected by Mr. H. Pittier at the same place on the same date (no. 3112). 
A most distinct member of the section Chalarium, readily distinguished from the 
other shrubby species by the abundant, white, hirsute pubescence, the large, deep 
purple flowers, and the rhombic, contorted joints of the loment. 
Phaseolus chiriquinus Standley, sp. nov. 
Stems stout, striate-angled, sparingly pubescent with short, fine, straight or curled, 
whitish hairs, or glabrous; stipules triangular-lanceolate, acute, small, thin, brownish; 
petioles stout, 25 to 40 mm. long, hirtellous; petiolules thick, 3 to 4 mm. long, tawny- 
villous or hirtellous; stipelle 1.5 to 2 mm. long, ovate to oblong-linear, acutish, 
1-nerved ; leaflets ovate to oblong-ovate, 4 to7 cm. long, 4.5 cm. wide, acute or abruptly 
short-acuminate, rounded at the base, prominently veined, pubescent on the upper 
surface with fine spreading hairs, beneath sericeous with tawny hairs; racemes 10 to 
38 cm. long, much exceeding the leaves, the rachis stout, obtusely angled, hirtellous 
with tawny hairs, glabrate below, the flowers very numerous, in fascicles of 2 to 5; 
bracts linear, acute, 4 to 6 mm. long, appressed-pubescent, somewhat persistent; 
pedicels slender, 4 to 9 mm. long, ascending; calyx campanulate, 3 to 4 mm. long, 
copiously pubescent with short tawny hairs, the lobes shorter than the tube, the 
upper one broad and low, emarginate, the 3 lower ones ovate, acutish, slightly longer, 
the mouth of the calyx very oblique; bractlets very small, much shorter than the 
calyx; banner purple, the wings and keel pale yellowish, more or less tinged with 
purple; banner about 14 mm. long and 12 mm. wide, rounded-obovate, recurved, 
deeply emarginate, glabrous, narrowed at the base and with a rounded auricle on 
each side, this folded over against the inner surface, glabrous; wings narrow, about 
equaling the banner, with a rounded auricle at the base; keel strongly spirally coiled; 
young legumes flat, broadly falcate, about 3 times as long as broad, mostly 4-ovuled, 
very densely pubescent with loose tawny hairs. 
Type in the U. S. National Herbarium, no. 677501, collected on the Cuesta de 
Cerro Quemado, eastern slope ‘of Chiriqui Volcano, Panama, altitude 1,800 to 2,160 
meters, March 10 to 13, 1911, by H. Pittier (no. 3111). 
From the form of the fruit, this plant evidently belongs to the group Drepanospron. 
It is related to Phaseolus multiflorus Willd., but differs in its more elongate inflores- 
cence, numerous flowers, shorter pedicels, and small, deciduous bractlets. 
