462 DECANDRIA. PENTAGYNIA. oxalis. 



Hab, On mountains ; also in woods in the most northern parts 

 of the United States. On the Catskill Mountains. Kn eve Is 

 and Rafinea que. Near Albany, New-York. On the 

 White Hills of New-Hampshire. Bigelono. June. 



2. Oo violacea L. : stemless ; scape umbelliferous ; 

 flowers nodding ; leaves ternate, obcordate, smooth; segments 

 of the calyx callous at the tip ; styles shorter than the exte- 

 rior stamens; root squamose. Willd. Spec. II. p. 786. 

 J acq. Oxal. p. 35. t. 80. f. 2. Ejusd. Hort. II. t. 180. 

 (iesiQ Willd.) Mich. FLU. ^.39. PurshFl.l.^. 

 322. Elliott Sk. I. p. 525. IV a It. Can p. 143. 

 G ron. Virg. ICl. 



Root roundish, consisting of thick ovate imbricate scales, which 

 are 3-ribbed,and ciliate on the margin. Leaves on petioles 3 — 4 

 inches long; leaflets broadly obcordate, punctate, slightly 

 hairy. Scafie about 6 inches high, naked and smooth, bearing 

 a terminal umbel of about 4 flowers. Segments of the calyx 

 connivent, each with a callous orange-colour tip. Petals vio« 

 let, obovate. Stamens unequal ; filaments hairy ; anthers ob= 

 long. Style shorter than the stamens, spreading ; stigma ca° 

 pitate, 2-lobed. 



Hab. In rocky woods, on the sides of hills ; rare. April — June.. 



* "^ Caulescent. 



3. O. corniculata L. : pubescent ; stem prostrate ; leaves 

 ternate-obcordate ; umbels as long as the petioles ; petals 

 obovate, slightly emarginate; styles as long as the interior 

 stamens. Willd. S)jec. II. p. 800. J acq. Oxa/. p. 30. 

 t. 5. Smith Fl. Brit. II. p. 492. Eng. Bot. 1726. Pvrsh 

 Fl. I. p. 322. Elliott SA:. I. p. 525. O. corniculaia /S, 

 Mich, Fl. II. p. 39. 



Root annual. Stem branched, diffuse or pi'ocumbent, hairy, 6 — 3 

 inches long. Inferior leaves alternate ; upper ones fascicu- 

 late, on long petioles ; leaflets obcordate, hairy beneath. Um- 

 bels on peduncles nearly as long as the petioles, 2 — 4-flowered.. 

 Flowers small. Segments of the calyx lanceolate, obtuse. 

 Fetals yellow, about twice as long as the calyx. Stamens un- 

 equal; the shorter ones as long as the calyx. S/y/es spreading. 



Hab. In cultivated grounds and in dry woods. May— Sep- 

 tember. 



4.0. strlcta J acq.: hairy; stem erect, branched; 

 leaves ternate, obcordate ; umbels longer than the petioles ; 

 petals obovate, entire ; styles as long as the interior stamens. 

 Will d. Spec. II. p. 800. J acq. Oxal. p. 2-9. t. 4, Mic h, 

 Fl. II. p. 39, Purs h FL I. p. 323. E I Hot I Sk, I. p. 

 526. Wait. Car. p. 143, 



Root perennial, fibrous, creeping. Stem usually erect, surne- 



