412 



FABACEAE, 



VOL. II. 



10. Vicia angustifolia L. Smaller Com- 

 mon Vetch. Fig". 2622. 



Vicia angustifolia L. Amoen. Acad. 4: 105. 1759. 

 Vicia saliva var. angustifolia Ser. in DC. Prodr. 

 2: 361. 1825. 



Annual or winter-annual, glabrous or puber- 

 ulent; stem slender, i-2 long. Stipules 

 mostly half-sagittate, toothed, or entire; leaves 

 short-petioled, or nearly sessile; leaflets 4-16, 

 linear, lanceolate, or oblanceolate. 4"-i8" long, 

 i''-2" wide, acute, obtuse, truncate or emar- 

 ginate at the apex, mucronulate, those of the 

 lower leaves commonly oblong or obovate, 

 broader and shorter; flowers i or 2 in the 

 upper axils, purple, 6"-o/' long; calyx-teeth as 

 long as the tube or shorter; pod linear, gla- 

 brous, i '-2' long, 2$"-3i" wide. 



In fields and waste places, Nova Scotia to Flor- 

 ida, mostly near the coast and in M'issouri. Na- 

 turalized from Europe. Widely distributed as a 

 weed in temperate regions. April-July. 



ii. Vicia SepiumL. Bush Vetch. Wild 

 Tare. Fig. 2623. 



Vicia Sepium L Sp. PI. 737. 1753. 



Perennial by slender stolons, minutely pu- 

 bescent; stem slender, 2-3 long. Leaves 

 short-petioled, 2'-6' long; leaflets 10-18, ovate 

 or oval, 6"-i2" long, 3"-7" wide, emarginate 

 or truncate at the apex, mucronulate, thin; 

 stipules half-sagittate, 5" long or less ; racemes 

 in i or more of the upper axils, 2-6-flowered, 

 i'-i' long, nearly sessile; flowers very short- 

 pedicelled, pale purple, 6"-io" long; calyx- 

 teeth unequal, shorter than the tube; pod 10"- 

 15" long, about 3" wide, glabrous. 



Waste grounds, Quebec, Maine, Ontario and 

 New Hampshire. Adventive or fugitive from 

 Europe. Native also of Asia. Called also crow- 

 peas. May-July. 



Vicia narbonensis L., an annual European 

 species with large dark purple axillary flowers, 

 and broad ovate toothed leaflets, has escaped from 

 cultivation in Maryland and the District of Co- 

 lumbia. 



Ervum Lens L., the lentil, distinguished from 

 all our species of Vicia by its elongated calyx- 

 lobes and oval, i-2-seeded pod, is collected oc- 

 casionally as a waif, not established. 



41. LATHYRUS L. Sp. PI. 729. 1753. 



Herbaceous vines, rarely erect herbs, with pinnate mostly tendril-bearing leaves, and 

 racemose or sometimes solitary flowers. Calyx oblique or gibbous at the base, its teeth 

 nearly equal or the upper ones somewhat shorter than the lower. Corolla nearly as in Vicia, 

 but commonly larger. Stamens diadelphous (9 and i), or monadelphous below. Ovary 

 sessile or stalked ; ovules generally numerous ; style curved, flattened, hairy along its inner 

 side. Pod flat, or sometimes terete, 2-valved, dehiscent, continuous between the seeds. 

 [Ancient Greek name of some leguminous plant.] 



About no species, natives of the northern hemisphere and of South America. Besides the fol- 

 lowing, about 25 others occur in the southern and western parts of North America. Type species : 

 Lathyrus satii'us L. 



