58 DICOTYLEDONOUS. 



tion, inserted into the base of tHe calyx, sometimes regular at 

 others papilionaceous ; the odd petal superior. Stamens gen- 

 erally deficient, distinct monodelphous, or diadelphous. An- 

 thers versatile. Ovary simple, 1 -celled, 1 or many seeded. 

 Stigma simple. Fruit genevaWy a legume, sometimes a drupe. 

 Seeds! or several attached to the upper section, heterotropous 

 or anatropous, sometimes with one aril, or large caruiicle. 

 Embryo straight, destitute of albumen, or with the radicle 

 curved along the edge of the cotyledons. Leaves alternate, 

 stipulate, entire. 



Sub-Order I. PAPILIONACE^.. 



Sepals with an imbricated aestivation. Stamens 19, perigy- 

 nous or inserted with the petals into the bottom of the calyx. 

 Corolla papilionaceous. 



Genus I. VICIA. 



Calyx tubular, 5-toothed, the tvv'o upper teeth shortest. Style 

 bent, outside of the style, near the summit, viIloT.is. Legume 

 many seeded. Leaves pinnate. Leaflets in several pairs. 

 Petioles extended into tendrils. 



1. V. Cakoliniana. •S'/ew muched branched, running over shrubs. Leaf- 

 lets dt-\2, glabron?, oblong-linear, obtuse, mucronate, petiole extended into a 

 3-cleft tendril. Flowers numerous, in loose racemes. CaUx hairy, teeth 

 short and obtuse. Legume, oblong, mucronate, coriaceous. Seeds nearly glob- 

 ular, dark colored. 



White or blue. %. April — Mav. Along the margins of swamps. 8- 

 10 feet. 



1. V. AcuTiFOLrA. jS^em somewhat angled, glabrous. Leaflets 3-6, gla- 

 brous usually acute, linear, petiole terminating generally in an undivided ten- 

 dril. Stipules linear-lanceolate, entire. Flowers in racemes larger than the 

 leaves, 3-7 flowered; lower teeth of the calyx ovate lanceolate, upper ones 

 very short. Legume somewhat falcate, mucronate, 4-10 seeded, seeds small. 

 White, tinged with blue. <v). April. Rich soils. -Common. 4-6 ft. 



Gevus II. ERVU31. 



Calyx deeply 5-cleft, with nearly equal segments, linear, 

 acute, about equal in length to the corolla. Stigma g\?ihYOus, 

 Legume 2-4 seeded, oblong, seeds nearly globose. Petioles 

 poduced into tendrils. Peduncles axillary. 



1. E. HiRSL'TTJM. Stem much branched, difiuse. Leaflets 8-20, linear- 

 lanceolate, truncate or refuse at the apex. iSo)j«/e.<f subulate. Pe^oZes ter- 

 minating in divided tendrils. Peduncles 3-6 flowered near the summit. Le- 

 gumes hairy, obliquely truncate, drooping, 2-seeded. 



Bluish white. ?2). March— April. On cultivated grounds. 



Gentjs III. LATHYRUS. 

 » 



Calyx campanulate, S-cleft, the the 2-upper segments short. 



