Class V. Order II. 61 



VIOLA PUBESCENS. Jlit. Fellow violet. 



Stem erect, villous ; leaves heart-shaped, pubes- 

 cent ; stipules oblong, serrulate at tip. Jlit. abr. 



Syn. VIOLA PENNSTLVANICA. Mich. 



Stem simple, pubescent. Leaves alternate, broad-heart 

 shaped, crenate, tapering to a point, twice as long as their pe- 

 tioles. Flowers solitary, from the axils of the leaves, yellow, 

 veined. May, June. Perennial. 



73. THESIUM. 



THESIUM UMBELLATUM. L. Umbelled Thesinm. 



Flowers umbelled, leaves oblong. L. 



Syn. THESIUM CORTMBULOSUM. Mich. 



Stem round, slender, seldom exceeding a foot in height. 

 Leaves oval-lanceolate, mostly entire, alternate, smooth. Branch- 

 es near the top, feAv, alternate. Umbels of few flowers, termi- 

 nal, with an involucre of about four leafets. Flowers on short 

 peduncles. Calyx five cleft, the tube green, segments white. 

 Stamens inserted on the calyx. Seed one. Dry woods. 

 June. 



DIGYNM. 



74. APOCYNUM. 

 APOCYNUM ANDROS^MIFOLIUM. L. Dog's bane. 



Stem Btraightish, herbaceous ; leaves ovate, 

 smooth on both sides ; cymes terminal. Mill. 



A handsome, smooth, branching plant. Stem two feet 

 high, smooth, dark, with spreading branches. Leaves oppo- 

 site, ovate, acute, entire. Flowers on the ends of the branches, 

 of a pink or purplish white, bell shaped, their segments revo- 

 Jute. The plant abounds with milky juice. Its root is emetic, 

 and hence is often denominated ipecac, a name vulgarly applied. 



