SYNGBNESIA JSQUALIS. 405 



318. APIOS. 



A. tuberosfi. 



HAB. Shady thickets. July Aug. 1|_; root tubular; stem tunn- 

 ing; leaves pinnate; leaflets 5 7; racem. axillary ; Jlowf.r dark 

 purple. 



319. AMPHICARPA. 



A. monoica: leaves ternate, ovate, smooth; stem hairy; racemes of 

 the stem pendulous, petaliferous, sterile ; radical peduncles, bearing 

 apetalous fertile flowers. 



HAB. Woods and thickets. July Aug. If. ; stem twin., slender ; 

 Jlower racemose, pale purple. 



320. GALACTIA. 



G. glabella : leaves ternate, ovate, and elliptic, subcoriaceous, shining 

 emarginate at each end, smooth above ; racemes pedunculate, as long 

 as the leaves ; calyx smooth ; legumes pubescent. 



HAB. Pine barrens. Aug. Tj. ; stem prost. ; flower reddish-purple, 

 large. 



321. TEPHROSIA. 



T. virginica: erect, villous; leaflets numerous, oblong-Unceolate. 



acuminate ; raceme terminal, subsessile ; legumes falcate, villous. 

 HAB. Dry woods. July, 7j.; stem 12 inches high; leaves pale 



green ; jftower white and purple. 



322. MEDIC AGO. None-such. 



M. lupulina: spikes ovate; legumes reniform, 1-seeded, veined and 



rugose ; stems procumbent. 

 HAB. Fields, &c. May Oct. (v) ; stems diffuse ; spikes small 



yellow. 



SYNGENESIA. 

 JEQUALIS. 



Genera. * Florets all ligulate. 



323. CICHORIUM. Calyx surrounded with leafy scales; receptacle 

 somewhat chafiy ; pappus plumose, sessile, unequal. 



324. LEONTODON. Calyx imbricate, with flaccid scales; recept. 

 naked ; pappus simple, stipitate. 



325. PRENANTHES. Calyx surrounded with leafy scales; f.orets 

 few, (5 20 ;) receptacle naked ; pappus simple, subsessile. 



