1904] NELSON: ROCKY MOUNTAIN PLANTS 265 
/ Pyrrocoma brachycephala, n.sp.—Aflopappus lanceolatus brachy- 
cephalus Piper, n. var. in herb.—Stems several from the crown of 
a thickened root, slender, erect, 4-6" high, glabrous, rather 
leafy, clothed at the base with the shreds of former petioles: 
leaves glabrous or nearly so; the basal few, linear-oblanceolate, 
entire or minutely denticulate, acute at apex, 1-2" long, taper- 
ing to a margined petiole nearly as long; the cauline sessile, 
noticeably denticulate: inflorescence a long crowded or glomerate 
spike-like raceme, with foliar bracts: heads about 1™ high: the 
bracts unequal, in about 4 rows, oblong, abruptly acute. 
The above description is taken from Mr. William C. Cusick’s no. 2778 (in 
the Rocky Mountain Herbarium), the label of which bears the legend already 
given. The plant is so different from Pyrrocoma lanceolata in its habit, in 
the spicate, foliar-bracted inflorescence, and in the character of its leaves 
that it seems best in transferring it to Pyrrocoma to give it specific rank at 
the same time. 
’ Pyrrocoma Kennedyi, n. sp.—Stems several from the root, 
ascending, 2-4 °™ high, light-green, somewhat villous-pubescent, 
paniculately branched upward and bearing numerous heads: leaves 
permanently and rather softly and densely lanate-pubescent, 
mostly basal, oblong or oblanceolate, acute at apex and con- 
Spicuously dentate with narrow spinulose teeth, 5-10 long, 
tapering into a petiole usually much shorter; cauline leaves 
smaller and narrowed to a sessile base: heads medium sized (1™ 
or more broad and high), several to many (often 30 or more 
On each of the several stems) on the slender linear-bracted - 
branches of the panicle: involucral bracts in 3 or 4 rows, unequal, 
herbaceous-tipped, but not noticeably broadened or squamose: 
rays mostly fewer than 20. 
The nearest ally of this species is P. lanceolata. In fact, it bears much 
the same relation to this that P. znuloides bears to P. uniflora. The dis- 
tinctly paniculate arrangement of the numerous heads, together with the 
permanent woolliness of the plant as a whole, seems to justify its separation 
from P, Janceolata. ; 
The type is no. 630 secured by Professor P, B. Kennedy on Maggie 
Creek, Elko county, Nev., August 13, 1902. Similar but smaller is his no. 
615, Tuscarora flats, same county. Mr. William C. Cusick’s no. 2744, Oregon, 
901, distributed as Aplopappus hirtus Gray, var., is the same, as is also 
Probably no, 1137 by Merrill and Wilcox, from Buffalo River, northwestern 
Wyoming. 
