718 FABACEAE 
Calyx 2-lipped, the lobes sean long. Corolla violet, red, or white: stand- 
ard erect or spreading: wings and keel-petals with relatively short claws. 
Ovary sessile or nearly so. Pod turgid, elongate, or the subterranean ones, 
when present, short.—About 70 species, natives of warm and tropical regions. 
—Sum.—fall or all year S.—MILK-PEAS.— The corollas are mainly purple. 
Stem erect: leaf-rachis not prolonged beyond the lateral leaflets: flower-clusters ses- 
sile or nearly so in the axils. I. ERECTAE. 
Stem prostrate or wining: leaf-rachis prolonged: panicles elon- 
gate, continuous or purse ted. 
Plant with decumbent or prostrate stems. and branches. II. DIF 
Plant with twining stems and branches. III. VOLUI ES: 
I. ERECTAE 
Plant with solitary or clustered, wiry, somewhat zigzag stems. 1. G. erecta. 
II. DIFFUS 
Panicles shorter than the leaves, at least, in ede flower- 
clusters approximate. 
Calyx coarsely hirsute. 
Pa o. usually with. one flower-cluster: leaflets of the 
r leaves narro 2. G. brachypoda. 
Pan iles with Sacral 'fower- clusters: leaflets broad. 3. G. floridana. 
Caly * pldbrous or UAE 4. G. regularis. 
Paniclés ECCO ng the leaves: flower-clusters separated 
Blades of the ns oval or elliptie: ealyx 6—9 mm. long 
cle x a: half as long as the peduncle 5. G. brevipes. 
Panicle shorter than the peduncle. 6. G. prostrata. 
"Blades ‘of the: sera ae! Peen ae to linear: 
,calyx 10-16 mm T. G. pinetorum. 
III. VOLUBILES 
Leaves with 3 leaflets : corolla vi iolet. 
Panicles several (2-7) in a leaf-axil, the rachis zigzag. 8. G. fasciculata. 
Panicles solitary (rarely 2) in a le af-ax 
Peduncle shorter than the panicle-rachis, shorter or 
somewhat longer than the leave 
eee ud p us : upper cuc Iob triangular to 
Leaflets, a hë upper leaves with ovate, oval, or 
D pis. a standard mostly less 
9. Œ. volubilis. 
Te ners of the Do. leaves with linear or nearly 
linear blades: standard over 11 mm long. 10. G. parvifolia. 
Standard striped : upper eee broadly ovate. 
Panicles sessile or nearly s leaflets coriaceous. 11. G. Sd 
Panicles long-peduncled : leaflets membranous. 12. GŒ. striata, 
Peduncle ich longer than the panicle-rachis and leaves, 13. G. mollis. 
Leaves with 7--9 leaflets: corolla white. 14. G. Elliottii. 
1. G. erecta (Walt.) Vail. Stem glabrous or nearly so: leaflets 2.5-4 c 
long; blades elliptie to linear: calyx 5—6 mm. long; lateral lobes longer than 
the eq. tals 6-7 mm. long: pod 
1.5-2 em. lon [G. NAE T. & G.]— 
Pinelands, Coastal Plain Fla. to Ala., 
a.?), and N. C. 
G. brachypoda T. & G. Stem ee 
or r nearly ae leaflets 2—83.5 € ong; 
rete elliptic -: linear- pir. a 4.5-5 
long; lateral lobes acute: keel-petals 
6 mm. long: vod not seen.—Pinelands, Fla. 
3. G. floridana T. & G.. Stem hoary-pubes- 
cent: leaflets 1.5—4.5 em. long borea and 
on petioles less than 1 em. long in G. flori- 
dana microphylla Vail): bla d oval or 
elliptie-oval: flowers scattered nearly the 
