234 BOTANICAL GAZETTE [march 



This variety appears to be rare and local and to occupy a comparatively 

 restricted area. The tj^e station is at Dandridge on the Tennessee River, 

 Jefferson County, Tennessee, and I have seen specimens from KnoxviDe, 

 Tennessee, Eureka Springs, northwestern Arkansas, Williams ville, Campbell, 

 and Allenton, Missouri, Lansing, Ingram County, Michigan, from Parry 

 Sound, Georgian Bay (B. E. Fernow, 1908, a single tree), and Point Pelee in 

 Lake Erie, Essex County, Ontario (C K. Dodge, 191 1). 



Acer saccharum var. sinuosum, n. var. — A. sinuosum Rehder, 

 Sargent, Trees and Shrubs, 2:255. P^- ^95- 1913- — The distinctive 

 character of A . sinuosum was found in a projection into the broad 

 sinus at the base of the leaves formed by the nerves of the 2 upper 

 lobes which form the base of the sinus. Since the species was 

 described, large collections of this maple of the Edwards Plateau in 

 western Texas show that this projection of the nerves is not a con- 

 stant character and that A . sinuosum must be considered a small- 

 leaved form of A . saccharum. 



This little Texan tree is known only on the banks and bluffs of Cibelo 

 Creek, near Boerne, Kendall County, on the rocky banks of the upper Seco 

 Creek, Bandera County, and at the base of a high Umestone bluff near Utopia, 

 Uvalde County. Its isolation is remarkable and interesting, for none of the 

 group of sugar maples grow nearer to the Edwards Plateau than A . grandiden- 

 tatum Nuttall on the mountains in the extreme western part of Texas, A. 

 floridanum Pax at Marshall, Harrison County, Texas, and A . leucoderme Small 

 and A. saccharum var. glaucum Sargent in the Red River VaUey in southern 

 Arkansas. 



Acer floridanum Pax. — A. saccharinum Elliott, Sk. 1:450 (at 

 least in part). 182 1. 



The range of this species can be extended northward from River Junction, 

 Florida, which is the type station, through the Piedmont region of Georgia 

 and the Carolinas to the banks of the Roanoke River, near Weldon, HaUfax 

 County, North Carolina, and to Dinwiddle County, southeastern Virginia 

 (river banks and low wet woods near McKenney, W. W. Ashe). It is common 

 in the neighborhood of Raleigh, Wake County, North CaroUna, where it has 

 been largely planted, and is the common and prevailing street tree. 



Recent collections show that the variety of A . floridanum with villose- 

 tomentose petioles and usually pubescent branchlets is not uncommon. It 

 is the 



Var. FiLiPES Rehder, Sargent, Trees' and Shrubs, 2:255. ^9^3- — 

 A. hrachypterum Wooton and Stanley, Contrib. U.S. Nat. Herb. 16: 

 part 4, 146. 1913; 19:411. 1915. 



