44 
A. traehycaulum var, tenerum (Vas.) n. comb. 
Triticuin traehycaulum Link, Hort. Reg. Bot. Berol. II, 189 (1833). 
A. tenerum, Vasey, Bot. Gaz. 10, 258 (1885). 
A. repens (L.) Beauv. var. tenerum (Vas.) Beal, Grasses N. Am., 2, 
637 (1896). 
A. tenerum longifolium Scribn. & Sm., U.S. Dept. Agr., Div. Agrost. 
Bui. 4, 30 (1897). 
A. pseudorepens Scribn. & Sm., U.S. Dept. Agr., Div. of Agrost., Bui. 
4, 34 (1897) 1 . 
A. pseudorepens magrium Scribn. & Sm., U.S. Dept. Agr., Div. of 
Agrost., Bui. 4, 34 (1897). 
A. novae-angliae Scribn. apud Brainerd, Jones and Eggleston, Contr. 
Bot. Vt. 8, 9, 103 (1900). 
A. tenerum magnum (Scribn. & Sm.) Piper, Bui. Torr. Bot. Club, 
32, 546 (1905). 
4. raninum, (L.) Beauv,. var. tenerum (Vas.) Pease & Moore. Rho- 
John ); No. 67182, Mount Ste. Anne, Perc6, July 24, 1905 (J. F. Collins 
and M. L. Fernald); No. 66051, Little Cascapedia river, July 29-30, 1904 
(J. F. Collins, M. L. Fernald, and A. S. Pease)', No. 66201, Bic, July 15-18, 
1904 (J, F. Collins and M. L. Fernald); No. 119241 Perkins, July 14, 1923; 
*A. pseudorepens is listed as a synonym of A. traehycaulum, although it was described as having creeping root- 
Btocks. The fact is that, judging from the specimens cited by Scribner and Smith, it was founded on two distinct 
elements. The first specimen cited is one from Texas, collected by Nealley, 1889. This specimen is A. SmifAit 
Rydb. None of the specimens cited is designated as the type and, if the Nealley specimen is considered as such 
on the ground that it is the first one cited, A. pseudwepens Scribn. & Sm. will stand as a good species and A. 
Smithii Rydb., as published later, will have to be relegated to synonymy. There is, in this case, however, good 
reason for considering another of the specimens cited by Scribner and Smith as the type. This is No. 2018, collected 
by Rydberg at Kearney, Nebraska, 1895. Scribner himself apparently considered Rydberg's 2018 the most repre- 
sentative one, for this is the specimen from which his figure 592 in American Grasses, illustrating A. pseudorepens, 
is drawn. Taking this into consideration, the writer would consider Rydberg’s No. 2018 as the type of A. pseudo- 
repens. This specimen is A. traehycaulum var. tenerum. 
The writer is indebted to Prof. Hitchcock for an opportunity to examine the specimens referred to. 
