le 
DIADELPHIA. DECANDRIA. ms 
partial; peduncles axillary solitary, aggregated or race- e 
mose. 
Species. 1. }. caroliniana. This species is considered no 
way inferior to the cultivated species for affordingindigo. 
‘This vast genus of near 70 species is principally indi- 
‘genous to the Cape of Good Hope and India, a few others 
exist in Arabia Felix, Egypt, Guinea, and tropical Ame- 
rica. “It is remarkable,” says Sonnini, p. 158. “ that Wil 
or Anilis the American name of the Indigo plant, by the 
Arabs called Wilé.”—Sonnini’s Travels in Upper and Low- 
er Egypt. ' ; ; 
592. TEPHROSIA. Persoon. Gaueea. L. 
Dentures of the calix subulate, subequal. Sta- 
mind monadelphous. Legume compressed, sub- 
coriaceous, 
Shrubby or herbaceous, leaves pinnate, rarely ternate, 
more or less pubescent; nerves pennate; stipules canline, 
minute, rarely spinescent, partial ones wanting? flowers 
solitary and axillary, or Tacemose, racemes terminal, ax- 
illary, or opposite the leaves. Legume rather large and 
exserted. 
Specres. 1.T. virginiana. Weaflets cblong, acute; 
raceme terminal, subsessile; wings Calcarate at the base 
as in Indigofera. 2. Aispidula, Slender, humifuse and pubes- 
cent; leaflets rather small, oblong-oval; peduncles elon- 
gated, about 3-flowered; legume oblong, fulcate, some- 
what hispid. Mich. Fl. Am. p. 68. 
3. * gracilis. Erect and slender, nearly smooth: stem 
dichotomous, herbaceous; leaves pinnate, subsessile, leaf- 
Jets oblong-elliptic, mucronulate and acute (131015); pe-— 
duncles opposite to, and about the length of the leaves, — 
mostly 3-flowered; legume linear and hirsute, alittle curv- — 
ed. Has. In Carolina and Georgia. Can this possibly be 7’. 
hispidula of Michaux? It differs, however, in too many 
particulars. Ons. Root perennial as in all the North 
American species. Stem smooth, or with a very few 
seattered inconspicuous hairs; pe ges and persistent 
bructes subulate; leaflets opaque, often near an inch long, 
and only about 2 lines wide, smooth above, with minute ap- 
d hairs below, which are only visible through a lens; 
a about 2 inches Jong, legume nearly the same 
gth; vexillum in common with all the North American 
species externally pubescent. a : 
ha Simple, erect and herbaceous; stem 
_ and common petiole doubly pilose; leaves pinnate, re~ 
