DICOTYLEDONS. 121 



1. C. ViRGiNiANA L. Catgut. Root long, slender and very 

 tough ; stems clustered, erect, slender, seldom branched, silky-pubes- 

 cent, 1-2 ft. high ; leaves nearly sessile ; leaflets 15-25, linear-oblong, 

 acute or obtuse, smooth above, white-canescent below ; racemes 

 mostly in a dense terminal cluster ; flowers large, showy, yellowish- 

 purple ; pod linear, straight, densely pubescent. June-July. Dry 

 pine barrens. 



2. C. spiCATA (Walt.) Kuntze. Goat's Rue. Stems diffuse, 

 simple or branched, villous with rusty hairs ; leaves scattered, short- 

 petioled; leaflets 9-15, oval, strongly mucronate at the apex, smooth- 

 ish above, hairy below ; racemes opposite the leaves, peduncle slen- 

 der, 6-10 in. long, 6-10-flowered ; flowers large, white, becoming- 

 purple ; calyx lobes linear-subulate ; pod linear, pubescent, 10-12- 

 seeded. May-July. Dry pine barrens. 



3. C. HispiDULA (Michx.) Kuntze. Goat's Rue. Stems slen- 

 der, ascending or decumbent, rusty-pubescent, 1-2 ft. long; leaves 

 short-] »etioled ; leaflets 11-15, small, oblong, acute or obtuse, usually 

 smooth above ; peduncles lateral or terminal, slender, a little longer 

 than the leaves, 2-4-flowered ; flowers small, purple ; pod linear, 

 l>ubescent, slightly curved. May^July. Dry, sandy soil. 



X. KRAUNHIA.^ 



Twining woody vines ; leaves odd-pinnate ; racemes ter- 

 minal ; flowers large and showy ; calyx 2-lipped, the upper 

 lip 2-cleft, short, the lower longer and 3-cleft ; standard large, 

 orbicular, with 2 calloused ridges at the base, wings auricu- 

 late at the base, keel falcate ; pod long, stipitate, coriaceous, 

 2-valved, several-seeded. 



K. FKUTEscENs (L.) Greene. Wistaria. Stem climbing 30- 

 40 ft., often 2-3 in. in diameter at the base ; branches and leaves 

 ])ul)escent when young, l)ec()ming smoother with age ; leaves short- 

 ]>etioled; sti]>ules minute; kniflets 9-17, ovate-lanccokite, acute at 

 the ap«'x, rounded at i\ut l)ase; ract'mes large, densely flowered; 

 calyx jiulu'scent; corolla lilac-] >uri>le; ]>o<l 2-3 in. long, 2-4-seeded. 

 A])ril-June. Uiver banks. Oflcn cultivated for ormimeii. 



XI. ROBINIA. 



Trees or shrubs ; leaves odd-])innate ; stijmles often spiny ; 

 fl(nvers showy, in axillary racemes; calyx short, 5-toothed, 

 the two ui)per teeth shorter and i)artially united; standard 



