196 THE FLORA. 



1 P. peren'"nis. Perennial Wild-iean. Leaflets ovate, pointed. Eacemes in pairs. 4-7 f. jt?. 



2 P. diversifo''lius. Trailing W. Leaflets angular, 2-3-lobed. Peduncle longer 



than leaf. c. 



3 P. hel'volus. Long-stalked W. Leaflets lance-ovate, not lobed. Peduncle 3-4 



times longer tlian the leaf. M. S. 



4 P. pauciflo'rus. Few-Jloivered W. Leaflets linear-oblong, hairy. Peduncle longer 



than the leaf. W. 

 6 P. \rulga''ris. Common Garden-hean. Leaflets ovate, pointed. Eacemes solitary, 

 shorter than leaves. 



6 P. multiflo'rus. Scarlet Pole-bean. Fls. scarlet, showy. Eoot tuberous. Pedicels opp. t 



7 P. lima'tus. Lima B. Flowers white. Lfts. ovate-deltoid, acute. Pods broad, large. 



8 P. na'nus. Bush-hean. Erect, bushy. Leaves broad-ovate, acute, t 



2. ATIOS. Ground-nut. 



Caljx bell-shaped, somewhat 2-lipped, the 2 side teeth nearly obsolete, 

 the lower tooth longest. Keel incurved and at length coiled against the 

 very broad, reflexed banner. Ovary sheathed at base. — Twining, smooth 

 herbs. U Root bearing eatable tubers. Leaves pinnately 5-T-fohate. 



A. tubero'sa. Stem round, twining about other plants, 2-4f. in length. Leaflets 

 mostly 7, narrow-ovate, more or less acuminate, on short stalks. Eacemes 

 axillary, solitary, dense-flowered, shorter than the leaves. Flowers dark pur- 

 ple. The tubers on the root are oval, thick, and very nutritious. In thickets 

 and shady woods. July^ -4w^. 



3. ROBIN'IA. Locust. 



Calyx short, bell-shaped, 5-cleft, the 2 upper divisions more or less 

 united. Banner large, wings obtuse. Stamens diadelphous (9 & 1). 

 Style bearded inside. Legume flattened, long, many-seeded. — Trees and 

 shrubs with stipular spines. Leaves unequally pinnate. Flowers showy, 

 in axillary racemes. April, May. 



R. visco''sa. Clammy Locust-tree. Eacemes rather compact, rose-white, erect. 



Branchlets and stalks sticky. Leaflets ovate. In parks. Native South. 

 R Pseudaca'cia. Common Locust-tree. Eacemes rather loose, drooping, white, 



fragrant. Leaflets oblong-ovate, smooth, as well as the branchlets. 

 R, his'pida. Rose Acacia. Shrub 4-9f. high, hispid, with clusters of large, pn"ple 



flowers. Leaflets 5 or 6 pairs, broadly oval. 



4. MELILO'TUS. Melilot. Sweet Clover. 



Calyx tubular, 5-toothed. Keel petals completely united, shorter than 

 the others. Of the 10 stamens 9 are united, one separate. Pod 1 or few- 



