94 PULSE FAMILY. 



37. LEGUMINOSiE, PULSE FAMILY. 

 Distinguished by the papilionaceous corolla (Lessons, p. 105, fig. 

 217, 218). usually accompanied by 10 monadelphous or diadelphous 

 01' rarely distinct stamens (Lessons, p. 112, fig. 227, 228), and the 

 legume (Lessons, p. 131, fig. 303, 304). These characters are com- 

 bined in the proper Pulse Family. In the two other great divisions 

 the corolla becomes less papilionaceous or wholly regular. Alternate 

 leaves, chiefly compound, entire leaflets, and stipules are almost uni- 

 versal in I his great order. 



L PULSE FAMILY proper. Flower (always on the plan 

 of 5, and stamens not exceeding 10) truly papilionaceous, i. e. the 

 standard outside of and in the bud enwrapping the other petals, or 

 only the standard present in Amorpha. (For the terms used to 

 denote the parts of this sort of corolla see Lessons, p. 105.) Sepals 

 united more or less into a tube or cup. Leaves never twice com- 

 pound. 



A. Stamens monadelpli&ia or diadelphous. 



§ 1. Eerbs^ shrubs^ or one a small tree^ never tivinivg, iralUng^ nor tendril-bearing^ 

 with leaves simple or »f 3 or mure digitate teajiefs, moruutetpkous stamens^ and 

 the alternate Jive anthers differing in size and shape J'ront the ottttrjive : pod 

 usually several-seeded. 



1. LUPINUS. Leaves of several leaflets, in one species simple: stipules adiierent 



to the base of the petiole. Flowers in a long thiclt raceme. Calyx deeply 

 2-lippeJ. Corolla of peculiar shape, the sides of the rounded standard being 

 rolled backwards, and the wings lightly cohering over and enclosing the nar- 

 row and incurved scythe-shaped or sickle-shaped keel. Fod flat. Mostly 

 herbs. ' 



2. CKOTALARIA. Leaves in our species simple, and with foliaceous stipules 



free from ihe petiole but running down on the stem. Calvx 6-lobed. Keel 

 scytlie-sliaped, pointed. Stamens wich the tube of filaments split down on 

 the upper side. Pod inflated. Ours herbs. 



8. GKXISfA. Leaves simple and entire: stipules very minute or none. Calyx 

 6-cieft. Keel oblong, nearly straight, blunt, turned down when the flower 

 opens. Pod mostly flat. Low shrubt)y plants. 



4. CY 1 ISUS. Leaves of one or three lea"fleis, or the green branches sometimes 

 leafless: stipules minute or wanting. Calvx 2-lipped or 6-toothed. Keel 

 straight or somewhat curved, blunt, soon turned down. Style incurved or 

 even coiled up after the flower opens. Pod flat. Seeds w"itU a fleshy or 

 scale-like appendage (slrophiole) at the scar. Low shrubbv plants. 



6. LA14UKNU.M. Leaves of three leaflets: stipules inconspicuous or wanting. 



Calyx with 2 short lips, the upper lip notched. Keel incurved, not pointed. 

 Ovary and flat pod somewhat stalked in the calvx. Seeds naked at the scar, 

 trees or shrubs, with golden yellow flowers in long hanging racemes. 



4 2. Herbs, never twining nor tendnil-bearing, with leaves of 3 leaflets (rarely more 

 Out then aigiliite), their margins comiiumly mure or less toothed {which is 

 remarkable in. tliis family) ; stipules conspicuous and united with the base of the 

 petiole (Lessons, p. 69, lig. UH): stamens diadelphous: pod 1 - few-seeded, 

 never divided across into Joints. 

 * Leaves pinnalely 3-fuliolate, as is seen by the end leaflet being Jointed with the com- 

 mon petiole above the side leaflets. 

 a. TEIGONELLA. Herbage odorous. Flowers (in the common cult, species) 

 ■ single and nearly sessile in the axil of the leaves. Pod elongated, oblon" or 

 linear, tapering into a long-pointed apex. ° 



7. MKDICAGO. Flowers small, in .-pikes, heads, &o. Corolla short, not united 

 o Ai>"i 11 V.' PT,". °' s'^mens. Pod curved or coiled up, at least kidiiev-shaped. 



8. MtLlLOlUh. Herbage sweet-scented. Flowers small, in slendei- racemes. 



Core la as in Med.cago. Pod small, but exceeding the calyx, globular.' 

 wrmkled, closed, 1-2-seeded. ' fa'"""""' 



