104 LEGUMINOS^E. (PULSE FAMILY.) 



oblong, muoronate-pointed ; stipules small, lanceolate, half amnv-sh ape 1, sharp 

 pointed at both ends ; peduncles 3 - 5-flowered ; corolla blue-purple. Aloisl 

 places, N. England to Perm., Illinois, and northward. July. (Eu.) 



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

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

 3/M/i/.) W. New England to Penn., and northward. 



L. LATir6Lius (EVERLASTING PEA) and L. ODORATUS ( SWEET PEA) 

 arc commonly cultivated species. 



PISDM SATivuji, the PEA ; FAuA vuLG\Ris, the HORSE-BEAN , and ClcER 

 ARIETINUM, the CHICK-PEA, are other cultivated representatives of the same 

 tribe. 



22. PIIASEOLUS, 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.) 



# Pods scymetar-shaped : racemes long and loose, panicled. 



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

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



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. (Strophostyles, Ell.) 



2. P. divci'Sif Olilis, Pcrs. Annual ; stem prostrate, spreading, roagh- 

 hairy ; leaflets ovate-3-lol>ed, 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. lie I vo I US, L. Perennial, hairy ; stems diffuse, slender ; leaflets 

 orate or ol>long, entire or obscurely angh-d ; peduncles 3-6 times the length of the leaves 



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: peduncles 1 -fnc-flowered at (Jte summit : flowers 



small : keel slight 1 1/ twisted. 



4. P. pauciflorus, Bcnth. Annual ; stems diffuse, but twining, slen- 

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

 ^1'. lri<]>ermus, Torr. fr Gr.) River-banks, Illinois (^fcad) and sonthwoso 

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



P. VULOXRIS is the common KIDNEY BEAN or HARICOT. 

 P. I.UNATOS is the LIMA BEAN of our gardens. 



