LEGUMINOS.li:. (pulse FAMILY.) 93 



and jointed peduncles. — Sepals 5, colored, deciduous. Petals 5, 

 shorter than the sepals ; the 3 posterior ones long-clawed, often 

 united ; the 2 anterior broad, sessile and fleshy. Stamens 4, the pos- 

 terior ones distinct or united. Anthers 2-celled, opening by a termi- 

 nal pore. Ovary 1-celled, 2-ovuled. Fruit 1-seeded, woody, indehis- 

 cent, armed with hispid prickles. Albumen none. Radicle concealed 

 in the cotyledons. 



1. KRAMERIA, Loefl. 



Charafters of the order. 



1- K. lanceolata, Torr. Herbaceous; stems slender, prostrate, mostly 

 brauchiug; leaves lanceolate or linear, acute; peduncles longer than the 

 leaves, leafy-bracted above the middle ; claws of the posterior petals, and 

 stamens, united ; fruit globose, downy, armed with few strong spreading 

 spines. — Dry sandy soil, Florida, and westward. — Root long and woody. 

 Stems 1° long. 



Order 47. LEGUMINOS^E. (Pulse Family.) 



Herbs, shrubs, or trees, with chiefly compound alternate stipulate 

 leaves, and papilionaceous or regular perigynous or hypogynous 

 flowers. — Sepals 5, more or less united. Petals 5, rarely fewer, or 

 none. Stamens monadelphous, diadelphous, or distinct. Ovary 

 simple, free, forming a legume in fruit. Seeds without albumen. 

 Leaves almost always with entire margins. 



Synopsis. 



Suborder I. PAPILIONACE^E. Corolla of 5 (rarely fewer) irregular 

 petals, inserted on the base of the calyx, rarely perigynous, imbricated in the 

 bud, mostly papilionaceous ; viz. one upper and exterior, termed the vexiUum 

 ox standard ; two lateral, called w/n^s ; and two lower and interior, oftener 

 united by their contiguous margins, forming together the keel. Stamens 10 

 (rarely 5), separate, monadelphous, or diadelphous (9 & 1, or 5 & 5). Legume 

 1-celled (sometimes partly 2-celled by the introversion of the sutures), or sev- 

 eral-celled by transverse partitions. Style simple. Cotyledons thick. 



Tribe I. LOTE.^. Corolla papilionaceous. Stamens 10 (except No. 8). Legume con- 

 tinuous (not jointed). Cotyledons leafy in germination. — Stems (except No. 12) not 

 twining nor climbing. 



* Stamens monadephous : anthers of 2 forms. Leaves simple, or palmately compound. 



1. CROTALARIA. Calyx 5-lobed. Legume inflate 1. Upper stipules decurrent. 



2. LUPINUS. Calyx 2-lipped. Legume flattened. Stipules not decurrent. 



» * Stamens diadelphous : anthers alike. Leaves trifoliolate, rarely palmate or pinnate, 

 the earliest ones alternate. 



3. MEDIC AGO. Legume membranaceous, curved or coiled, 1 - many-seeded. Flowers 



racemed. 



