NEW SPECIES OF ERIOGONUM. 69 
so completely distinct by characters of the perianth, I know 
only in my duplicate of Rydberg and Bessey’s n. 5,330 from the 
Yellowstone Park, distributed for Z. umbellatum. 
E. NEGLECTUM. Of the habit of F. umbellatum, and the size, 
or somewhat smaller, the foliage smaller and of another outline, 
the blade being nearly elliptical, the decidedly slender petioles 
longer or shorter, both faces of the leaves glabrous in maturity, 
not flocculent even when young, except as to the margin and the 
petiole, and this indument deciduous: peduncles above, and the 
rays of the simple umbel villous-tomentulose rather than floccu- 
lent: perianth yellow, segments more obovate and less obtuse 
than in F. umbellatum. 
Collected by myself, on Blue River in northwestern Colorado, 
6 Aug., 1875, the situation subalpine. The specimens, long 
since mounted on a sheet with some of F. umbellatum, are always 
in marked contrast with that species by the different leaf-outline, 
the almost total want of pubescence, and the distinctly differ- 
ent and villous character of what little hairiness a lens discloses. 
I do not think the Blue River region has been visited by botanists, 
except as traversed hastily by myself twenty-seven years since. 
E. ovatum. Resembling Æ. subalpinwm, the perianths of the 
same dull cream color, but stem much more woody, the basal 
branches stout, rigid, short-jointed, the small foliage in rosettes 
at ends of branches: leayes coriaceous, less than 4 inch long, 
_ vate, acute, short petiolal, glabrate above, densely white tomen- 
tose beneath: peduncles 6 inches high, stoutish, loosely floceu- 
lent, naked: inflorescence compound, but the umbels rather 
short peduncled and crowded: inyolucral bracts, rays of umbel, 
ete., silky villous rather than tomentose: perianths, with round- 
obovate segments and a short stont truncate stipitiform base, 
this somewhat viscid-granular. 
A well marked species somewhat intermediate between such 
different plants as Æ. umbellatum and E. heracleoides. The only 
specimen seen is from the vicinity of Silver Lake, Lassen Co., Cali- 
fornia, and was obtained by Messrs. Baker and Nutting in 1804. 
