108 LEGUMINOSiE. (PULSE FAMILY.) 



lete. Base of the petioles hollow, and enclosing the leaf-buds of the next year. 

 Bracts minute and fugacious. (Name of obscure derivation.) 



1. C. tinctoria, Raf. (Virgilia lutea, Michx. f.) Kich hill-sides, E. 

 Kentuclcy and Tennessee. May. — Racemes 10'-20' long. Flowers 1' long 



SuBOKDEB II. CjESAIiPINIEjE. The Bkasiletto Family. 



31> CEBCIS, L. Red-bvd. Jddas-tkee. 



Calyx 5-toothed. Corolla imperfectly papilionaceous : standard smaller than 

 the wings, and enclosed by them in the bud : the keel-petals larger and not 

 united. Stamens 10, distinct, rather unequal. Pod oblong, flat, many-seeded, 

 tlie upper suture with a winged margin. Embryo sti-aight. — Trees, with 

 rounded-heart-sliaped simple leaves, deciduous stipules, and red-purple flowers 

 in little umbel-like clusters along the branches, appealing before the leaves, acid 

 to the taste. (The ancient name of the Oriental Judas-tree.) 



1. C Canadensis, L. (Red-bud.) Leaves pointed; pods nearly 

 sessile above the calyx. — Rich soil. New York to Ohio, Kentucky, and south- 

 ward. March - May. — A small ornamental tree, often cultivated : the blossoms 

 smaller than in the European species. 



32. CASSIA, L. Senna. 



Sepals 5, scarcely united. Petals 5, unequal, not papilionaceous, spreading. 

 Stamens 5-10, unequal, and some of them often imperfect, spreading: anthers 

 opening by 2 jjores or chinks at the apex. Pod many-seeded, often with cross 

 partitions. — Herbs (in the United States), with simply and abmptly pinnate 

 leaves, and mostly yellow flowers. (An ancient name, of obscure derivation.) 



* Leaflets large ; stipules deciduous : the 3 upper anthers deformed and imperftct : 



flowers crowded in short axillary racemes, the upper ones panickd. 



1. C. ITEarilclndicn, L. (Wild Senna.) Leaflets & -9 pairs, lanceo- 

 late-oblong, obtuse ; petiole with a club-shaped gland near the base ; pods linear, 

 slightly curved, flat, at first hairy (2'-4'). 11 — Alluvial soil, common. July. 

 — Stem 3° -4° high. Leaves used as a substitute for the officinal Senna. 



2. C. occidentXlis, L. Leaflets i -6 pairs, ovate-lanceolate, acute or point- 

 ed; an ovate gland at the base of the petiole; pods elongated-linear (5' long) 

 with a tumid border, glabrous. (1) IJ. 1 — Virginia and southward. Aug. 

 (Adv. from Trop. Amer.) 



* * Liaflets small, somewhat sensitive to the touch : stipules striate, persistent : a cup- 

 shaped gland beneath the lowest pair of leaflets : anthers all perfect : flowers in 

 small clusters alcove the axils : pods flat. 



3. C. Chamsecrista, L. (Pakteidge Pea.) Leaflets 10-15 pairs, 

 linear-oblong, oblique at the base; flowers (large) on slender pedicels; anthers 10, 

 elongated, unequal (4 of them yellow, the others purple) ; style slender. ® — 

 Sandy fields; common, especially southward. Aug. — Stems spreading, 1" 

 long : 2 or 3 of the showy yellow petals often with a purple spot at the base. 



