118 DIADELPHIA. DECANDRIA. 
or racemose (Galactia?) Calix mostly bibracteate at the 
7 
Spectres. 1. C. virginiana. The largest papilionaceous 
flower in the United States. 
2. Plumieri. Stem twining; leaves ternate, ovate-oblong, 
acuminate, calix campanulate, shorter than the ovate 
bractes; corolla large, sericeous. Persoon, Syn. 2. p 303. 
Legume very long (and narrow). Carina particularly to- 
mentose. Has. v.v. Around New Orleans. 
3. mariana. From Pennsylvania to Carolina. On the 
banks of the-Schuylkill 2 miles from Philadelphia, but 
rare. Ons. Legume smooth and torulose, about 3-seed- 
ed, and rather short; flowers by pairs, large and pale blue, 
_ stem erect or twining at the summit; leaves ternate, ovate, 
acute, paler beneath; partial bractes subulate, conspicu- 
ous; calix tubular-campanulate, 5-cleft, much longer than 
the bractes. 
A genus of 11 species indigenous. to tropical America, 
except C. mariana and 2 species. in India; C. virginiana 
is also indigenous to Jamaica and St. Domingo. 
520. ROBINIA, L. (Locust Tree.) 
Calia: small and campanulate, 4-cleft, upper 
segment bifid. Legume compressed and elonga- 
ted, ay caeeee Ds seeds compressed, small. 
f with pinnated leaves, (in CARAGANA 
abeupe pinnated), stipules cauline and partial, small, or 
: setaceous, peduncles mostly axillary, racemose. Stigma 
eg! Es ~ Semcias. 1. R. Pseudacacia. (White Locust-tree.) 2: 
viscosa. 3. hispida. 
Excluding Caragena, the rest of this genus of 15 spe- 
cies is almost exclusively indigenous (0 tropical America, 
the sly exceptions are 1 species in India, and another 
in China. 
gal. awd dae 2 Gaia 
side, zee se, producing 
ing spur or di ture ee « 
small, terete or qua ; a 
Herbaceous or " ve lextees simple, binate, ternate, 
_ quinate or pinnate; sti cauline, minute, general and: 
we 
