POLYPETALOUS EXOGENOUS PLANTS. 245 



linear, 4-aiigled, recurved. Stem l°-4° high; legume 

 6'-10' long. 



C. Marilandica, L. Perennial, smoothish; leaflets 

 12-18, oblong, acute; ^;e^i"o/e with a club-shaped gland 

 near the base ; racemes several-flowered, the upper ones 

 crowded, forming a compact panicle ; legume linear, slight- 

 ly curved. Stem 3°-4° high ; legume 3-4' long. 



C. BiFLORA, L. Shrulby ; leaflets 4-10, oblong, nar- 

 rowed at the base, mucronate, with an obovoid gland 

 between the lowest pair; racemes 2-4-flowered, often 

 by pairs, slender, shorter than the leaves; fertile an- 

 thers 5; legume linear, flat, straight or somewhat falcate, 

 smooth, many-seeded. Leaflets 1' long; legume 3' long, 

 2' wide. 



** stamens b-\Q\. anthers all perfect ; sepals acute; stipules persistent. 



C. CHAM^CRISTA, L. Annual ; stem smooth or rusty 

 hairy; leaflets small, numerous, linear-oblong, mucronate; 

 stipules acuminate, nerved ; floivers borne above the axils, 

 large, clustered, on long pedicels ; anthers 10 ; styles slen- 

 der ; legu7ne linear, nearly straight ; part of ih.Q petals often 

 purple at the base. Stem 1°-1J° high. 



HOOPESIA, Buckley. 



Calyx ebracteate, deeply 5-cleft or 5-parted ; segments 

 lanceolate, rather unequal, linear-acute ; petals 5, subpapi- 

 lionaceous, long-clawed; stamens 10, iv^Q', filaments at the 

 base Ian ugi nose ; stijye many-ovuled ; style dilated at the 

 base, filiform, a little longer than the filaments; stigma 

 small ; legume broad lanceolate, slightly compressed, ob|^ 

 tuse, 8-10 seeded ; seed reniform. If dehiscent, it is late in 

 becoming so. 



H. ARBOREA, Buckley. Leaves bipinnate, 1-3-paired; 



