bo 
Rhodora [JANUARY 
Following the practice of recent years, awned plants of a normally 
unawned species are considered as forms, not varieties, unless there 
are other points of difference. 
AGROSTIS TENUIS Sibth., forma aristata (Parnell), forma nov. A. 
vulgaris aristata Parnell, Grass. Scot. 34 (1842). 
Until it is decided whether A. capillaris L. is A. vulgaris With. as 
held by Hitchcock! and Schinz,? or some other species as held by 
several botanists including Piper,’ we may follow Piper in using the next 
oldest name that applies unquestionably to A. vulgaris, namely 
A. tenuis Sibth. This name antedates A. vulgaris With. by two years. 
The awned form of this species has often been cited as var. aristata 
Gray, but reference to the original description‘ will show that Gray 
regarded his plant as an awned form of A. alba, not of A. vulgaris. 
The earliest name found by the writer for the awned form of A. 
tenuis (A. vulgaris) is that of Parnell cited above. 
ERIOPHORUM VIRGINICUM L., forma album (Gray), forma nov. E. 
virginicum, var. album Gray, Man. ed. 5. 566 (1876).—The form 
with white bristles. 
CAREX TENERA Dewey, var. echinodes (Fernald), comb. nov. C. 
straminea, var. echinodes Fernald, Proc. Amer. Acad. xxxvii. 474 
(1902). 
Mackenzie? has recently shown that C. straminea as understood by ` 
Fernald and others is not C. straminea Willd. but is the C. tenera of 
Dewey. 
CAREX UMBELLATA Schk., forma vicina (Dewey), forma nov. C. 
umbellata, var. vicina Dewey, Amer. Jour. Sci. x. Tab. D, f. 13 (1826); 
xi. 317 (1826). 
Plants of C. umbellata often occur with rather tall culms at the top 
of which are one or two pistillate spikes in addition to the staminate 
spike. This form would seem to be worthy of notice as it might be 
mistaken by the beginner for C. communis or other species of the 
group. These plants do not seem to constitute a definite race. 
CAREX HYSTERICINA Muhl., forma Dudleyi (Bailey), forma nov. 
C. hystricina, var. Dudleyi Bailey, Mem. Torr. Bot. Club i. 54 (1889). 
C. Pseudo-Cyperus X C. hystricina? Dudley, Cayuga Flora, 118 
(1886). C. hystericina, var. Cooleyi Robins. & Fernald, Gray's Man. 
ed. 7. 251 (1908), not C. Cooley? Dewey, Amer. Jour. Sci. xlviii. 144 
(1845), and not C. hystricina B Dewey, Wood's Classb. 206 (1861). 
1 Gen. N. A. Grasses. Bull. U. S. Dept. Agr. no. 772, Mar. (1920). 
2 Mitth. Bot. Mus. Zürich, xcii. 261 (1921). 
3 Bull. U. S. Dept. Agr. no. 692, July (1918). 
* Man. ed. 1. 578 (1848). 
s Bull. Torr. Bot. Club xlii. 603 (1915). 
