1913] NELSON & MACBRIDE—WESTERN PLANTS 479 
the scarious portion fimbriate at its junction with the herbaceous 
ciliate tip: ray achenes somewhat compressed, carinate on both 
sides, hirsute near the top, the pubescence shorter and sparser 
downward, those of the disk similar but glabrous or nearly so except 
for the ciliate summit. 
This is the second member in the section Katuiactis Gray. No. 568 by 
J.S. Corron, from rocky ridges of the Rattlesnake Mountains, Yakima County, 
Washington, May 8, 1902, is the type. 
v Balsamorrhiza serrata, n. sp.—Low, acaulescent, from a thick 
short tuber-like root: leaves crowded on the small crown, green but 
appressed pubescent with minute rigid hairs, the short petioles en- 
larged and sheathing at base, the blades 3-8 cm. long, much exceed- 
ing the petioles, strongly veined, ovate, sharply and closely serrate, 
the cuspidate teeth longest at the middle, diminishing toward the 
acute tip and the subcordate base: scapes few (1-3), 1-2 dm. high, 
monocephalous, naked, or sometimes with a pair of opposite long- 
petioled laciniately cleft or serrate leaflike bracts below the middle, 
the pubescence spreading, of two kinds, a fine dense indument and 
a soft long hirsute form which becomes most pronounced at the base 
of the heads and on the bracts: heads 4-6 cm. broad, the numerous 
yellow rays about 3.5 cm. long; bracts linear or linear-lanceolate, 
acute or acuminate, of nearly equal length: chaff of the receptacle 
little shorter than the flowers: disk achenes very flat, faintly 
nerved on each side of the low carinate ridge. : 
Perhaps nearest B. deltoidea Nutt. No. 83 by J. B. LEIBERG, ne — 
County, Oregon, May 10, 1894, is the type. Equally representative 1 - 
no. 58 from the same county, May 12, 1894. 
Rocky Mountain HERBARIUM 
UNIVERSITY OF WyomiNnc, LARAMIE 
