242 BOTANICAL GAZETTE [march 



same variety at Campbell, Dunklin County, Missouri, where I saw- 

 only a single individual. F. americana no. 4206, A. and E. G. 

 Heller, Texarkana, Texas, September 1898, with entire and equally 

 thick leaflets but not so pale below, is probably the same form. 



Castanea alnifolia var. floridana, n. var. — Differing from 

 the type in the glabrous, lustrous under surface of the mature 

 leaves and in its arborescent habit. 



In sandy soil with Quercus myrtifolia Willd. on the shores of St. Andrews 

 Bay near Panama City, Bay County, Florida, T. G. Harbison, May 28, 1917 

 (no. 10, type), December 10, 1918 (nos. 13, 14); Dover, Screven County, 

 Georgia, T. G. Harbison, May 13, 1913. 



A tree occasionally 13-14 m. tall, or sometimes shrubby. 



Unfortunately I have not seen the fruit of this tree, but in the shape of 

 the leaves and in their serration, in the inflorescence, and in the glabrous 

 branchlets it is not distinguishable from C. alnifolia Nutt. The leaves when 

 they first unfold are hoary tomentose below, and the tomentum is sometimes 

 persistent during the season on the upper leaves of vigorous shoots. 



On a specimen of what appears to be the same form collected by Harbison 

 near Jacksonville, Florida, the branchlets are slightly puberulous, and there are 

 a few hairs on the under side of the midribs of the otherwise glabrous leaves. 



The leaves of a shrub with pilose branchlets collected by Harbison on the 

 coast near Wilmington, North Carolina, are broadly obovate and green, lustrous 

 and puberulous on the under surface, and quite different from, the leaves of the 

 typical form of C. alnifolia, which are narrow-obovate to oblong-elliptic and 

 thickly covered below with pale tomentum. 



Arnold Arboretum 

 Jamaica Plain, Mass. 



