Vol. 7. No. 7. 



TORREYA 



July, 1907 



LIP. 



NOTES ON SOUTHERN VIOLETS — II ^ev^ 



By Homer D. House 



In Small's Flora of the Southeastern United States, Mr. Pollard, 

 who has contributed the treatment of the Violaceae, does not 

 credit Viola aiciillata K\t. to this region. This species does how- 

 ever occur in this region and is represented by two rather distinct 

 forms. Applying to them the key for the species of Viola in 

 Small's Flora places them under V. papilionacea Pursh, as 

 described by Mr. Pollard. Viola papilionacea is of a different 

 group of species from V. aicidlata and is recognized by its hori- 

 zontal or ascending cleistogamous flowers on short peduncles, 

 developing into short, blunt capsules, the sepals of the petal- 

 iferous flowers never with the prominent basal auricles of V. 

 ciicidlata. In fact, Viola ciicullata has more in common with V. 

 Brittoniana than with any other species. Professor Greene * 

 recognizes more than one species in the V. cucullata of recent 

 manuals and, of these, V. viacrotis is very distinct from the com- 

 mon form of V. cucullata in leaf character and habitat. In the 

 southern Appalachian mountains it is the commonest representa- 

 tive of the group, while in the wet places along streams of the 

 Piedmont region adjacent to the mountains another species is 

 found. 



Viola macrotis Greene, Pittonia 5 : 97, N 1902. 



Leaves of the summer foliage with pale-green, subsucculent 



blades, broadly ovate, acute, shallowly cordate, crenate-dentate, 



6-10 cm. long and frequently broader, slightly pubescent on the 



j,^ veins beneath and on the peduncles : petaliferous peduncles 



— exceeding the leaves until well after the flowering period : cleis- 



^^ 



f^ * Pittonia 5: 96-101. N 1902. 



Cvl [No. 6, Vol. 7, of TORREYA, comprising pages I13-132, was issued June 19, 1907.] 



^ 133 



