62 jMr. Schweiniiz on the Genus Viola 



Capsulis scabriubculis. Radice tenui obliqua, tnox in 



radiculos abiente. 



Caesptfibus paucifoliosis, saepe bifoliis crescii — ^sub uni- 



flora. 



A very late flowering species, and found by me exclu- 

 sively on steep shady hill sides, looking to the north, where 

 Anemone hepatica usually grows. The leaves are always 

 feWj and flat, incumbent on the ground and in a fresh state, 

 generally veined purplish and white, and much smaller than 

 of any of the preceding species. The veined appearance van- 

 ishes when dry. They are rather more consistent than the 

 leaves of the former species but not near as thick as in the 

 following. The opening of the sinus is small and by a rec- 

 tilinear slant, without serratures. It flowers late in April 

 and in May. No kind of affinity to V. Sagittata, The long 

 hirsute pubescence of the upper surface of the leaves, gives 

 them frequently a hoary aspect. 



10. Species. V.. cordifoUa. Nuttall. 



WilldenQw in Hort. Borol. 1. T. 72. Sororia, 

 Pursch^ p, 173, n. 11. Sororia. 

 JVuttallj p, 148, n. 6. var ^. cordifolicu 



V. acaulis. Foliis crassis, orbiculato-cordatis, sinu clause 

 rotundato, crenatis, planis, terrae adpressis, pagina superiori 

 hirsutis, subtus glabris. Petiolis validis, brevissimis, flexuo- 

 sis, quasi alatis, glabriusculis. Stipulis radicalibus, minu- 



tissimis, subulatis. 



Flonhus rosaceo-coeruleis. Petalis breviusculis obova- 

 tis; binis lateralibus sparsim barbatis, ut etiam infmio, om- 

 nibus multistriatis. Calycis laciniis angustis, brevibns, obtu- 

 siusculis, glabris, postice vix productis- Stigmate parvo, 

 rostrato, depresso. 



Scapis longitudine foliorum. StipitUs minutissiniis. 



Capsula glabra. Radice brevi tenuiuscula radiculosa, 

 Caespitibus subfoliosis, floribus frequentioribus crescit. 



Although I have seen this species only in dry specimens 

 from Pennsylvania and Virginia, where it was picked up by 

 my esteemed friend Rev. C. F, Denke, in the mountains, I 

 conceive it ought to be separated from the villosa of Elliott, 

 on account of the general habit, the very thick leaves, with 

 a sinus not only roundedly closed, but frequently lapping 

 over, the very short thick bent petioles, very small radical 

 stipules and smooth fruit. The shape of the petals is like- 



