No. 14.] FLOWERING PLANTS AND FERNS. 285 



them have been described as species. They are often plentiful 

 locally and vigorous in growth, but show impaired fertility, 

 a large proportion of the ovules never forming seeds. 



Viola nephrophylla Greene (kidney-leaved). 

 Viola vagula Greene. 



Rare. Rich humus about a cold spring on a wooded hill- 

 side, Salisbury (Mrs. C. S. Phelps & Bissell), New Milford, 

 moist ledges on river bank (Bissell). May. 



Viola affinis Le Conte (related). 

 Viola venustula Greene. 

 Viola obliqua of Britton's Manual. 



Rich woods and thickets, mostly in alluvial soil. East 

 Lyme (Miss A. M. Ryon), Windsor (Weatherby), Plainville 

 (Andrews), Southington (Bissell), and occasional along the 

 Housatonic River in the northwestern part of the state. May 

 — June. 



Viola latiuscula Greene (somewhat broad). 



Rare. Rich woods or moist grassland : Southington and 

 Cornwall (Bissell). May. 



Viola papilionacea Pursh (butterfly-like). 



Viola palmata L., var. cucullata Gray in part. 



Common. Meadows, pastures and open places. May — 

 June. 



A hybrid with Viola sagittata occurs at Glastonbury ( Bis- 

 sell) ; a hybrid with Viola sororia is occasional throughout. 



Sometimes found with pure white flowers, or white flecked 

 with blue. 



Viola palmata L. (palmate). 



Dry woods. Rare in New London County : Ledyard 

 (Graves), East Lyme (Miss A. M. Ryon). Occasional else- 

 where. May — June. 



A hybrid of this with Viola papilionacea is sometimes 

 found. 



Viola triloba Schwein. (three-lobed). 



Viola palmata L., var. dilatata Pollard, not Ell. 



Occasional. Rich woods either dry or moist. May — 

 June. 



