214 AMERICAN MIDLAND NATURALIST 



not far from Terra Cotta, D. C. A considerable amount of cleis- 

 togamous flowering material was examined at the time and some 

 preserved for histological study. The stamens were invariably 

 only two. 



Viola incognita Brainerd. 



vSpecimens examined both from Mineral Springs (Porter Co.) 

 in fall and from Crumstown, Ind. (St. Joseph Co.) The cleisto- 

 gamous flowers have short auricles. The stamens are always 

 two only. The keel petal is sometimes present as a spatulate 

 semimembranous growth. The capsules and sepals are mostly 

 purplish dotted especially late in season. 



Viola fallens (Banks) Brainerd. Rhodora 7, p. 247, (1905). 



Specimens of cleistogamous flowers from Crumstown invariably 

 have but two stamens. No petals were found. Plants at Mineral 

 vSprings agree in this respect. 



Crocion Nov. Gen. 



Type Species Crocion pubescens or V^iola pubescens Ait. Hort. 

 Kew. ed. I., Vol. III., p. 290, (1789). 



Plantae caulescentes rhizomate carnoso foliis cordatis vel 

 reniformibus, crenulatis vel dentatis, bracteolis perparvis, petalis 

 flavis striatis, lateralibus quidem barbatis; appendicibus anthera- 

 rum ovalibus; sepalis quinque, subinaequalibus auriculatis, 

 staminibus quinque subsessilibus, binis inferioribus calcaratis, 

 ovario oblongo vel ovali subtriangulari ; staminibus florum cleis- 

 togamorum binis tantum, petalis parvis aliquando praesentibus 

 spatulatis vel linearibus. 



Caulescent plants not much branched with fleshy rhizomes; 

 leaves cordate or reniform crenulate usually not numerous, the 

 upper short and stalked, the lower with long petioles especially the 

 radical ones; stipules not much dentate or entire bractlets very 

 small. Petals yellow, striate with dark veins, stamen appendages 

 orange oval. Sepals five somewhat unequal slightly auricled. 

 Stamens five sub sessile, the two lower slightly spurred. Ovary 

 oblong or oval somewhat triangular. Stamens of the cleistogamous 

 flowers two only with rarely an abortive third. One to three 

 abortive petlas often present. The lower spatulate or linear, the 

 lateral linear petabs flat. 



Crocion eriocarpum (Schwein) Nov. Comb. 



\'iola eriocarpa Schwein. Am. Jr. Sci. 5. p. 75, (1822). 



