501 
Collaea DC. Ann. Sci. Nat. (1.) 4: 96. 1825. 
Betencourtia St. Hil. Voy. 25 376.. 3833. 
Leucodictyon Dalz. in Hook. Kew Journ. Bot. 2: 264. 1850. 
fleterocarpaea Scheele, Linnaea, 21: 467. 1850. 
The genus is accepted as described by Taubert in Engler and 
Prantl, Nat. Pflantzenf. 3: part 3, 369, 1894, where some fifty 
species are credited to the temperate and tropical regions of both 
hemispheres. 
Stems erect, decumbent or prostrate, zo¢ twining. 
Leaves simple; flowers 1-2, sub-sessile in the axils of the leaves. 
1. G. heterophylla. 
Leaves 3-foliolate, sometimes simple; flowers 1-several in short-peduncled or sub- 
sessile, axillary racemes or fascicles. 2. G. erecta, 
Leaves pinnately 3-foliolate or digitately 5-foliolate, with the terminal leafle 
petioled ; flowers 1-4, peduncled. 3. G. Grayz. 
Leaves 3-foliolate. a 
Stems erect, branched; leaflets oblong-linear; flowers few, approximated 
near the top of the rhachis. 4. G. brachypoda. 
Stems prostrate; leaflets oval or oblong-oval; flowers numerous, showy, scat- 
tered often the whole length of the rhachis, or in var. dongeracemosa 
mostly near the top. 5. G. Floridana. 
Stems ‘wining, prostrate or climbing on bushes. 
Leaflets 3. 
Racemes 2-7, usually fascicled, in the axils of the leaves. 
Racemes many-flowered, single or branched, as long as or longer than 
the short-petioled leaves ; leaflets round-oblong or sub-orbicular, densely 
canescent. 6. G. fasciculata, 
Racemes simple, 5-18 cm. long, flexuous and twisted ; leaves long- 
petioled ; leaflets oblong or oblong-orbicular, canescent. 
y. G, canescens. © 
Racemes solitary or with a smaller, or rarely with 2 accessory ones. 
Racemes as long as the leaves, few-flowered, or the upper flowers soli- 
tary in the axils; leaflets broad, oval, thinnish. 8. G. 7exana. 
Racemes as long as or somewhat longer than the leaves; leaflets glab- 
rate or nearly so; leaves and rigid racemes erect on the prostrate or 
g. G. regularis. 
climbing stem. 
Racemes usually much exceeding the leaves or in some forms of G. 
volubilis shorter than the leaves. 
Leaflets ovate-oblong, more or less pilose on both surfaces, rarely 
nearly glabrate ; in var. ¢¢ermediéa linear or linear-oblong. 
10, G. voludilis. 
Leaflets oval, villous; peduncles stout, hirsute, much elongated : 
flowers bright rose-purple. aL G. mollis. 
Leaflets ovate-oblong, coriaceous, bright yellow-green ; legume hir 
sute, the broad suture glabrous at maturity. 12. G. Cudensis. 
