OIADELPHIA. DECANDRIA. 11^ 



partial; peduncles axillary solitary, aggregated or race- 

 mose. 



Species. 1. I. caroUniana. This species is considered no 

 way ii\ferior to the cultivated species for affording Indigo. 



This vast g-cnus of near 70 species is principally indi- 

 genous lo the Cape of Good Hope and India, a few others 

 exisi in Arabia Felix, Kgypt, Guinea, and tropical Ame- 

 ilca. "It is remarkable," says Sonnlni, p. 158. "that JVil 

 or ^m7is the American name of the Indigo plant, by the 

 Arabs called Ai/e."— Sonnini's Travels in Upper and Low- 

 er Egypt. 



522. 1 EPHROSIA. Persoon. Galega. L. 



Dentures of the ca/i.r subulate, subequal. Sta- 

 mina monadelphous. Legume compressed, sub- 

 coriaceous. 



Shrubby or herbaceous, leaves pinnate, rarely ternate, 

 more or less pubescent; nerves pennate; stipules cauline, 

 minute, rarely spinescent, partial ones wanting' flowers 

 solitary and axillary, or racemo.se, racemes terminal, ax- 

 illary, or opposite the leaves. Legume rather large and 

 exsertcd. 



Species. 1. T. xirginiana. Leaflets oblong, acute; 

 raceme terminal, subsessile; wings calcarate at the base 

 as in Indigofera. 2. hispidula. Slender, humifuse and pubes- 

 cent; leaflets rather small, oblong-oval; peduncles elon- 

 gated, about 3-flowered; legume oblong, falcate, some- 

 what hispid. Mich. Fl. Am. p. 63. 



3. • graciUs. Erect and slender, nearly smooth: stem 

 dichotomoiis, herbaceous; leaves pinnate, subsessile, leaf- 

 lets oblong-elliptic, mucronulate and acute [ 13 to 15); pe- 

 duncles opposite to, and about the length of the leaves, 

 mostly 3-flowered; legume linear and hirsute, a little curv- 

 ed. Hab. In Carolina and Georgia. Can this possibly be T. 

 fUspidula of Michaux? It differs, however, in too manv 

 particulars. Obs. Root perennial as in all the North 

 American species. Stem smooth, or with a very few 

 scattered inconspicuous hairs; stipules and persistent 

 brictes subulate; leaflets opaque, often near an inch long, 

 and only about 2 lines wide, smooth above, with minute ap- 

 pressed hairs below, which are only visible through a lens; 

 peduncle about 2 inches long, legume nearU li e same 

 length; vexillum in common with all the North American 

 species externally pubescent. 



4. * paucifoiia. Simple, erect and herbaceous; stem 

 4ind common petiole doubly pilose; leaves pinnate, re- 



