ViciA. LEGUMINOS^. 2G9 



solitary (very rarely 2 or more), free from the calyx : ovules solitary 

 or several : style proceeding from the upper or ventral suture : stig- 

 ma simple. Fruit a legume, or sometimes a drupe. Seeds solitary or 

 several, heterotropous or anatro[)ous, sometiiries with an aril or lari^e 

 caruncle : albumen none. Embryo straight, or witli the radicle bent 

 back along the edge of the cotyledons : cotyledons either thin and 

 somewhat foliaceous, or thick and fleshy. — Herbs, shrubs, or trees. 

 Leaves alternate, stipulate, usually compound, sometimes reduced to a 

 solitary leaflet: the margin of the leaves or leaflets almost always en. 

 tire. Flowers axillary or terminal, solitary or commonly racemose, 

 paniculate, spicate, or capitate : pedicels usually articulated. 



Suborder I. PAPILIONACEiE. Linn. 



Sepals imbricated (or sometimes slightly valvate) in aestivation. 

 Corolla papilionaceous or more or less irregular, rarely wanting. Sta- 

 mens 10, or occasionally fewer, inserted with the petals into the bot- 

 tom of the calyx, or perigynous. Radicle bent back upon the edge of 

 the cotyledons, or straight. — Leaves simple or simply compound (in 

 Cassieae sometimes bipinnate). Flowers usually perfect. 



Tribe I. VICIE^. Bronn ; DC. 



Corolla papilionaceous. Stamens diadelphous (9 and 1). Legume 

 continuous (not articulated), dehiscent. Radicle inflexed. Cotyle- 

 dons thick, farinaceous, remaining under ground unchanged in germi- 

 nation. — Herbs, with abruptly pinna(e leaves ; the common petiole 

 not articulated with the stem, produced at the apex into a bristle or 

 tendril. 



1. VICIA. Tourn. inst. t. 221; DC. prodr. 2. p. 354. 



Calyx tubular, 5-cleft or 5-toothed ; the two upper teeth shortest. Style 

 fiUforra, 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 several pairs. Petioles produced into branching 

 tendrils. Peduncles axillary. — Vetch. 



* Peduncles elongated. 



j-'l. V. Americana (Muhl.) : glabrous; leaflets numerous (10-14), elliptical- 

 lanceolate or ovate-oblong, obtuse or retuse, mucronate ; stipules semisagit- 

 tate, deeply toothed; peduncles shorter than the leaves, 4-8-flowered, lower 

 teeth of the calyx broadly lanceolate ; style very villous at the apex ; legumes 

 linear-oblong, compressed, reticulated, glabrous. — Muhl. in Willd. sp. 3. p. 

 1096 ; Pursh, fl. 2. o. 471 ; DC. I. c. p. 355 ; Hook. ! fl. Bor.-Am. 1. p. Vol. 

 p. leaflets elTiplical-lanceolate, somewhat rigid, strongly reticulated ; pedun- 

 cles 2-5-flowered. — Hook. ! I. c. V. sylvatica, Nutt. gen. 2. p. 97? 



