Hybanthus 



VlOLACEAE 



681 



Jan. 



Feb. 



Mar. 



Apr. 



May 



June 



July 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Miles 



0" 50 



Map 1431 

 a Leggettn Britton & Hollick 

 Hodgdo.n 



che 

 var. moniliformis (Bicknel 



o 50 



Map 1432 



Hybanthus concolor (Forst.) Spreng. 



198. VlOLACEAE DC. Violet Family 



Sepals not auricled; petals fleshy, green, lower one not spurred; stamens united into 

 a sheath 5271. Hybanthus, p. 681. 



Sepals auricled; petals not fleshy, colored or white, the lower one spurred (except in 

 V. eriocarpa) ; stamens distinct 5274. Viola, p. 681. 



5271. HYBANTHUS Jacq. 



1. Hybanthus concolor (Forst.) Spreng. (Cubelium concolor (Forst.) 

 Raf.) Green Violet. Map 1432. Generally associated with beech in beech 

 and sugar maple or beech and oak woods. It prefers the rich soil of 

 wooded slopes, especially their bases. It is usually not frequent or common 

 where it is found. I saw it once in a rather open woods, however, where 

 it formed almost a closed stand over nearly half an acre. This was in an 

 open beech and white and black oak woods in Steuben County. 



The stem of this species is normally pubescent all over or nearly so. 

 Within the range of the species occurs a form with the "stems glabrous 

 throughout, to slightly pubescent in narrow lines, or very sparsely 

 hispidulous at the top." This form should be sought in Indiana and is 

 known as f. subglabratus Eames. (Rhodora 32: 140. 1930.) 



Conn, to s. Ont. and Mich., southw. to N. C. and Kans. 



5274. VIOLA [Tourn.] L. Violet 



The violet group is one of the most admired groups of native plants and 

 is at the same time one of the most difficult of determination. It is well 

 known that some of the species freely hybridize, thus making positive 

 identification of some forms difficult or impossible. Ezra Brainerd, who 

 was our foremost student of violets and wrote the keys for Viola in our 

 manuals, determined most of my violets until his death. Since my speci- 

 mens have been determined by him, I have followed his keys and descrip- 

 tions as closely as possible. Some recent authors believe that some of the 

 species recognized by Brainerd are not tenable. The species most difficult 



