154 LEGUMINOSiE. Vicia. 



Tribe IV. Trifolie*. Stamens diadelphous. Legume not jointed, dehiscent and several-seeded, or 1 - 2-seeded and 



indehiscent. — Mostly low herbs. Leaves trifoliolate, without stipelles : leaflets often toothed or serrulate. 

 Tribe V. AsTRAGiLE.E. Stamens diadelphous. Legume turgid or inflated, often spuriously 2-celled longitudinally 



by the introflexion of one of the sutures. — Herbs, mostly with unequally pinnate leaves which are destitute 



of stipelles. 

 Tribe VI. Hedysireje. Stamens monadelphous or diadelphous. Legume (loment) transversely divided into several 



indehiscent one-seeded joints, or sometimes reduced to a single one-seeded cell. — Leaves (in all the United 



States genera) pinnately trifoliolate. 

 Tribe VII. Geniste*:. Stamens monadelphous : anthers of two forms. Legumesnot jointed, but sometimes intercepted 



internally. — Leaves simple or palmately compound, not slipellatc. 

 Tribe VIII. Sophoreje. Stamens distinct : anthers uniform. Legume continuous, or frequently moniliform, but not 



jointed. 



*♦ Corolla irreg^dar, ot somcliTMS nearly regular, 7iever truly papilimiaccous. 



Tribe IX. Cassie^:. Stamens distinct, sometimes fewer than 10: anthers mostly of two forms. Legume not jointed, 

 or spuriously many-celled by transverse partitions between the joints. — Leaves pinnate or bipinnate. 



Tribb I. VICIEM. DC. 



Corolla papilionaceous. Stamens diadelphous (9 <^- 1). Legume continuous {not articulated), 

 2-valved, dehiscent. Radicle bent back on the edge of the cotyledons. Cotyledons thick 

 and farinaceous, remaining underground unchanged in form during germination . — 

 Herbs with abruptly pinnate leaves ; the common petiole not articulated to the stem, 

 extended beyond the apex into a bristle or tendril. 



CONSPECTUS OF THE GENERA. 



1. Vicu. Style with a tuft of hair at the summit, particularly on the outside (next'the keel). 



2. Ervum. Style pubescent on the sides, or all around, below the stigma. 



3. Lathyrus. Style pubescent on the inner surface (next the free stamen). 



I. VICIA. Tourn. ; Endl. gen. 65SI. VETCH. 



I " Name originally derived from the Celtic word gwig " (De Theis) ; wklcen in German ; vicia, Latin ; vesce, French.] 



Caly.v tubular-campanulate, 5-cleft or 5-toothed ; the 2 upper teeth shortest. Style fihform, 

 bent at a right angle with the ovary, villous at the apex, particularly on the outside (next 

 the keel). Legume oblong, several-seeded. — Mostly climbing herbs. Leaflets in several 

 pairs. Petioles produced into branching tendrils. Peduncles axillary. 



* Peduncles elongated. 



1. ViciA Americana, Muhl. American Vetch. 



Smooth; leaflets numerous (10- 14), elliptical-lanceolate or ovate-oblong, obtuse or retuse, 

 mucronate ; stipules (small) semisagitlate, deeply toothed ; peduncles shorter than the leaves, 

 4 - 8-flowcred ; lower teeth of the calyx broadly lanceolate ; style very villous at the apex ; 

 legumes linear-oblong, compressed, reticulated, smooth. — Muhl. in Willd. sp. 3. p. 1096; 



