BIADELPHIA. DECANDRIA. 119 



partial; peduncles axillary solitary, aggregated or race- 

 mose. 



Species. 1. T. caroUmana. This species is considered no 

 way iiiferior to the cultivated species for affording Indigo. 

 This vast genus of near 70 species is principally indi- 

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

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

 rica. "It is remarkable," says Soifnini, p. 158. "that JVil 

 or Anil'xs the American name of the Indigo plant, by the 

 Arabs called J\i7e."— Sonnini's Travels in Upper and Low- 

 er Egypt 



522. FEPHROSIA. Persoon. Galega. L. 



Dentures of the calix subulate, subequal. Sta- 

 ■ mi»a inonadclphous. Zc^injie compressed, sub- 

 coriaceous. 



Shrubby or herbaceous, leaves pinnate, rarely temate, 

 more or less pubescent; nerves pennate; stipules cauline, 

 minute, rarely spinescent, partial ones wanting? floviers 

 solitary and axillary, or racemose, racemes terminal, ax- 

 illarv , or opposite the leaves. Legume rather large and 

 exsencd. 



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

 raceme terminal, subsessile; wings calcarate at the base 

 as iM 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. 68. 



3. * gracilis. Erect and slender, nearly smooth: stem 

 dichotomons, 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, 

 mosily 3-flowered; legume hnear and hirsute, a little curv- 

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

 hispidula of Michaux? It differs, however, in too many 

 particulars. Obs. Root perennial as in all the North 

 American species. Stem smooth, or with a ver}- few- 

 scattered inconspicuous hairs; stipules and persistent 

 br-ctes subulate; leaflets opaque, often near an inch long, 

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

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

 peduncle about 2 inches long, legume nearly the same 

 length; vexillum in common with all the North American 

 species externally pubescent. 



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

 and common petiole doubly pilose; leaves pinnate, re- 



