102 CLASS V. ORDER I. 



the petioles commonly much longer than the leaves. Both are 

 sometimes hairy, and sometimes smooth. Scapes four angled. 

 Flowers large, purple, the lateral petals bearded, the beard glan- 

 dular or not so. I have not been able to satisfy myself of a per- 

 manent difference between this plant and V. striata. — May. — 

 Perennial. 

 Viola palustris. L. Marsh Violet. 



Stemless ; leaves reniform-cordate, stipules broad- 

 ovate, acuminate ; stigma margined ; calyx ovate, 

 obtuse; capsule oblong, triangular. 



Common to this country and Europe. Leaves smooth, cre- 

 nate. Flowers pale blue or purple, smaller than those of V. 

 cucullata. — On the White mountains. — Dr. Boott. — Mr. Oakes. — 

 June. 

 Viola rotundifolia. Mjc. Round leaved yellow Violet. 



Stemless; leaves orbicular-cordate with the sinus 

 closed, slightly toothed, smoothish ; petiole pubescent ; 

 calyx obtuse. 



A yellow violet of small size when in perfect flower in May, 

 but becoming larger with coriaceous leaves and apetalous flow- 

 ers in summer. — In old woods in the western parts of the state. 

 — Perennial. 



A cospecies or variety is found with somewhat longer leaves, 

 which is perhaps the <S. dandcstina of Pursh about which there 

 seems to be much confusion among botanists. The same plant 

 bears sometimes reniform, cordate and oblong leaves. 



Viola debilis. BIx. Spreading Violet. 



Caulescent; smooth, leaves reniform-cordate, some- 

 what acuminate, crenate ; peduncles twice as long as 

 the leaves; stipules ciliate-serrate. 

 Sijn. Viola Muiilexbergiana. 0. Hooker. 



Stems angular. Leaves heart shaped, crenate, nearly smooth. 

 Stipules linear-lanceolate, with loose spreading teeth. Peduncles 

 longer than the petioles with two linear bractes. Calyx leaves 



