184 



FABACEAE. 



bearded along the inner side; stigma oblique. Pod linear, nearly terete, 2- 

 valved. [In honor of Domenic Vigni, a commentator on Theophrastus.] About 

 30 species, natives of warm tropical regions, the following typical. 



1. Vignarepens (L.) 

 Kuntze. Yellow Yigna. 

 (Fig. 206.) Foliage usu- 

 ally pubescent with rather 

 appressed hairs. Stems 

 trailing or climbing, 

 branching, when pubes- 

 cent the hairs reflexed; 

 leaflets 3, ovale to lance- 

 olate or linear, f '-3' long, 

 acute, more or less dis- 

 tinctly reticulated, short- 

 stalked; petioles usually 

 longer than the leaflets; 

 peduncles surpassing the 

 subtending petioles, re- 

 trorsely pubescent at the 

 top; pedicels about 1" 

 long, corymbose ; calyx 

 campanulate, oblique, its 

 lobes triangular to lance- 

 olate ; corolla yellowish- 

 brown; standard with a 

 nearly reniform, notched 

 blade, less than 10" long; 

 pods linear, about V 

 long, nearly terete, pu- 

 bescent. [Dolichos repens 

 L. ; D. luteolus Jacq. ; 

 Vigna luteola Benth.] 



Roadsides and moist grounds, especially abundant along marshes from Hungry 

 Bay eastward in Paget and Devonshire. Naturalized from tropical America or the 

 southeastei-n United States. Flowers from spring to autumn. Not, as Verrill states, 

 a characteristic seaside vine. 



Vigna sinensis (L.) Endl., Cow-pea, Asiatic, sometimes grown as a green 

 manure crop, is an annual with trailing or climbing stems, the leaves with 3 

 acute or blunt leaflets 2'-4' long, the yellowish flowers about 9" long, the 

 linear, fleshy pod 4-7' long. [Dolichos sinensis L.] 



10. DOLICHOS L. 



Climbing or trailing vines, with 3-foliolate stipellate leaves, and white to 

 purple flowers variously clustered or sometimes solitary, their bracts small or 

 caducous. Calyx campanulate, its two upper teeth united. Standard sub- 

 orbicular; wings obovate, curved, adnate to the incurved keel. Stamens 9 

 and 1, their anthers all alike. Ovary many-ovuled; style bearded or peni- 

 cillate below the terminal stigma. Pod flat, mostly somewhat curved, beaked. 

 Seeds subglobose or flattened. [Greek name of some bean, referring to its 

 long pods.] About 30 species, of tropical distribution, the following typical. 



