104 LEGUMINOSJS. (PULSE FAMILY.) 



oblong, mncrunate-pointed ; stipules small, lanceolate, half arrow-shaped, sharp- 

 puintcd at both cuds; peduncles 3 - 5-flowered ; corolla blue-purjile. Moist 

 places, N. England to Penn., Illinois, and northward. July. (En.) 



Var. HiyrtiloliiiS. Taller, climbing 2 c -4 high; leaves oblong or 

 ovate-elliptical; UJIJKT stipules larger: corolla pale purple. (L. myrtifolius, 

 Mufti.) W. New England to Pcnn., and northward. 



L. LATIF6LIU8 (EVERLASTING PEA) and L. ODORATUS (SWEET PEA) 

 are commonly cultivated species. 



PISUM SAiivuM, the PEA; FABA VULGARIS, the HORSE-BEAN , and CICER 

 AUIEI-LNUM, the CHICK-PEA, are other cultivated representative* of the same 

 tribe. 



22. PIIAStOL.US, L. KIDNEY BEAN. 



Calyx 5-toothed or 5-cleft, the 2 upper teeth often higher united. Keel of the 

 corolla, with the included stamens and style, spirally coiled or twisted, or curved 

 into a ring. Stamens diadelphous. Pod linear or scythe-shaped, several - 

 many-seeded, tipped with the hardened base of the style. Cotyledons thick 

 and fleshy, rising out of the ground nearly unchanged in germination. Twin- 

 ing or prostrate herbs, with pinnately 3-foliolate stipellate leaves. Flowers 

 often clustered on the knotty joints of the raceme. (The ancient name of the 

 Kidney Bean.) 



# Potis 'scymetar-shaped : racemes long and loose, paniclcd. 



1. P. pcreimis, Walt. (WILD BEAN.) Stem climbing high; leaflets 

 roundish-ovate, short-pointed ; pods drooping, strongly curved, 4-5-seedcd. 1|. 



Copses, Connecticut to Illinois, and southward. Aug. Flowers purple, 

 handsome, but small. 



* # Pods long and straight, linear, rather terete: flowers few in a short clustered ra- 



ceme like a head. (Strophostylcs, Ell.) 



2. P. diversifolillS, Pers. Annual; stem prostrate, spreading, rough- 

 hairy ; leaflets ovate-3-lobed, or angled towards the base, or some of them oblong- 

 ovate and entire ; peduncles at length twice the length of the leaves. Sandy 

 fields and banks, Massachusetts to Illinois and southward. July, Aug. Corol- 

 la greenish-white tinged with red or purple. Pod thickish. 



3. P. helvollis, L. Perennial, hairy ; stems diffuse, slender ; leaflets 

 orate or oblong, entire or obscurely angled; peduncles 3-6 times the length of the It-arcs. 



Sandy fields, S. New York to Illinois and southward. Aug. More slender 

 than the last: pods narrower: flowers as large and similar. 



# # Pods straight and linear, flat: plnnct< x 1 few-flowered at the summit : flowen 



small : keel slightly twisted. 



4. P. pauciflorilS, Benth. Annual ; stems diffuse, but twining, slen- 

 der, pubescent; leaflets varying from oblo_ng-lanceolate or ovate-oblong to linear. 

 (P. lcio>pennns, Torr. fr Gr.) "Hiver-banks, Illinois (Mead] and so nth west- 

 ward. July -Sept. Flowers 3" long, purple. Pod 1' long, pubescent. 



P. vuLo\Ris is the common KIDNEY BEAN or HARICOT. 

 P. LUN\TUS is the LIMA BEAN of our gardens. 



