CATALOGUE. 229 
subsessile, white-tomentose beneath; cyme dichotomous, leafy ; involucres 
in the forks or sessile on the branches, many-flowered, loosely silky-villous 
externally ; segments obovate or spatulate ; perigonia somewhat petal-like, 
white or whitish, the 3 interior segments often becoming longer—Upper 
Arkansas River, Colorado, 1873, Wolf (25); Camp Bowie, Arizona, August, 
1874, Rothrock (473). 
Erioconum FLAvuM, Nutt.—Perennial, canescent with a silky-woolly 
or hoary pubescence; stems scapiform, 3 to 6 inches high, from a thick, 
many-parted caudex; leaves spatulate or oblong-spatulate, becoming more 
or less glabrate above, radical ones crowded on the caudex, those of the 
involucre about equalling the 2 to 8 rays and of the same number; peri- 
gonia golden-yellow, 3 lines long, silky-villous on the outside, funnel-form 
at base, somewhat produced into a stipe; ovary hirsute at the apex.—South 
Park, Colorado, 1873, Wolf (26).—Var. Exatius, Watson, Twin Lakes, 
Colorado, August,-1873, Wolf (28); Arizona, 1873, Loew (153 a). 
Eriogonum caspitosum, Nutt. (Watson, Bot. King, p. 298)—Utah, 
and Halleck Station, Nevada, 1871, 1872, Watson’s Report. 
ERI0GONUM STELLATUM, Benth. (E. polyanthum, Benth.; Watson, 1. ¢. 
p. 478).—Utah, 1871, 1872, Watson’s Report. 
ERIOGONUM HERACLEOIDES, Nutt. (Watson, /. c. p. 299)—Utah, 1871, 
1872, Watson’s Report. 
ERI0OGONUM UMBELLATUM, Torr. (Watson, J. ¢. p. 300)—Utah and Ne- 
vada, 1871, 1872, Watson’s Report; South Park, Colorado, 1873, Wolf (24). 
ERI0GONUM OVALIFOLIUM, Nutt. (Watson, /. c. p. 301).—Northern Ne- 
vada, 1871, 1872, Watson’s Report. 
ER10GoNuM PAUCIFLORUM, Pursh.—Low, ceespitose; branches of the 
caudex very short and crowded; leaves linear or subspatulate, revolute- 
margined, attenuated into a petiole, at length nearly smooth; scape 4 to 6 
inches high, bearing a single head; involucres 5 to 10, turbinate-campanu- 
late, 5-toothed; calyx white, glabrous, lobes oval; filaments pubescent 
below.—Torr. & Gray, Rev. Eriog. Proc. Am. Acad. 8, p. 166—Sulphur 
Springs, South Park, Colorado, August, 1873, Rothrock (27). 
Erroconum ELATUM, Dougl. (Watson, /. ¢. p. 302).—Nevada, 1871, 
1872, Watson’s Report (260). 
