202 Rhodora [NOVEMBER 
upper Mississippi valley, extending on to Cape Cod in Massachusetts. 
It is structurally more constant than var. aurantiacum, the characters 
showing far fewer exceptions. 
Var. aurantiacum (Bicknell) n. comb. T. aurantiacum Bicknell, 
Torreya i. 26 (1901). In somewhat richer and heavier soil than the 
last: Quebec, New Brunswick, southern Maine, eastern Massa- 
chusetts, Connecticut, and New York to the mountains of Virginia, 
and from Ontario to Illinois and Wisconsin. This variety is variable 
as to the characters usually used in separating it from the typical 
form. Occasional specimens have perfoliate leaves, but all other 
characters normal. It is not unusual to find the type of pubescence 
characteristic of the variety combined with acute and often narrow 
sepals as in the typical form of the species, and the reverse combina- 
tion is almost equally common. 
Var. illinoense n. var. A var. aurantiaco recedit caulibus et calycis 
segmentis et foliorum pagina superiori longius setosis. Differing 
from var. aurantiacum in the longer hairs on the stem, sepals and 
upper leaf surface. Ohio and Illinois. Onto: Columbus, 1837, 
Sullivant. ILLiwo1s: Joliet, H. C. Skeels, no. 615; Oquawka, Harry 
N. Patterson (TYPE in Gray Herb.); Galva, 1878, C. H. Ford; Stevens 
Creek, 4. Gleason; Mahomet, U. E. Davis. Plants of this variety 
appear related to T. angustifolium in length of hair on the stems, on 
the upper leaf-surfaces and on the margins of the sepals; but though 
T. angustifolium has been reported from Illinois there is no evidence 
that this variety is a hybrid of it with T. perfoliatum var. aurantiacum. 
Var. glaucescens n. comb. T. aurantiacum var. glaucescens Wiegand, 
Ruopora xx. 116 (1918). Valley of Cayuga Lake in Central New 
York where it is as common as var. aurantiacum. The writer has 
seen only one other specimen, and this from Allegheny County, 
Pennsylvania (J. A. Shafer, no. 72). 'The specimen from Lebanon 
County, Pa., cited with the original publication of this variety, appears 
on further study to differ from the Ithaca material. It may be a 
hybrid of T. perfoliatum var. aurantiacum and T. angustifolium, as 
the long setae on the sepals and upper leaf-surface would suggest. 
T. ANGusTIFOLIUM L. Sp. Pl. 176 (1753). T. minus Michx. 
Fl. Bor.-Am. i. 107 (1803). Connecticut to Maryland and in the 
uplands to Alabama and Tennessee; also in Missouri and Illinois. 
Several perplexing collections have every appearauce of being hybrids 
between this species and T. perfoliatum var. aurantiacum both 
structurally and in the local occurrence. 
Var. Eamesii n. var. Foliis subtus velutinis; corollae laciniis 
oblongis; sepalis saepius obtusis.—Leaves velvety beneath, slightly 
broader and less acuminate than in the typical form of the species; 
lobes of the corolla oblong; sepals more generally obtuse. Stratford 
(and Milford), Connecticut, 1897, E. II. Eames; 1902, Eames (TYPE 
in Gray Herb.); also 1899, J. R. Churchill, and 1905, H. S. Clark. 
This has almost the appearance of a distinct species. Dr. Eames says 
