484 CockERELL: NorrH AMERICAN SPECIES OF HYMENOXYS 
mm. diameter. The manner of growth may result from the early 
destruction of the main axis by some animal. 
3. Cafion above Richfield, 5,200 feet, June 5, 1875, Lester F. 
Ward. Only about 4 dm. high, with one to three new stems, 
but remains of the old stem of the year before. Pappus and 
achene-hairs ferruginous. 
4. On grade south of Rockville, 4,500 feet, May 19, 1894, M. 
E, Jones. Single stems hardly 4 dm. high (one reddish, the other 
green), slightly lanulose at base, branching 1 dm. or less from 
top, with about six heads, averaging smaller than in the type, 
though some are as large ; outer bracts g or 10, broad; inner very 
broad, strongly fimbriate, without produced tips. Pappus-scales 
and achene-hairs very pale, hardly ferruginous at all. 
5. Near Rockville, 5,000 feet in gravel, May 19, 1894, JZ. &. 
Jones. Achenes and pappus more reddened than in the last. 
¢ Hymenoxys canescens nevadensis var. nov. 
With the stature and appearance of /7. canescens biennis, and the 
pappus of H/. canescens. The type is from the Charleston Mts., 
Nevada, alt. 6-7,000 feet, 1898, C. A. Purpus, in herb. Calif. 
Acad. Sciences. It is about 75 cm. high, with a red stem, and 
looks exactly like subsp. dzeznis; outer bracts long, numerous 
and narrow ; bristles of achenes bifid at tips ; pappus-scales color- 
less, faintly stained with reddish-orange toward the base, their 
shape oval, more or less pointed, less than half length of disc- 
corolla. The lower part of the disc-corollas is densely covered 
with stout jointed hairs. 
“ Hymenoxys canescens (Eaton) 
Actinella Richardsoni var. canescens D. C. Eaton, Bot. King 
Exp. 175. 1871; 
Picradenia canescens Greene, Pittonia, 3: 271. 1898. 
H. canescens and H. canescens biennis might be considered 
distinct species, were it not that the var. zevadensis combines the 
characters of the two. Including diennis and canescens in the same 
specific category, it is natural to think of dzexnis —a plant better 
developed and apparently more common than the other —as the 
typical form of species, and the treatment by Gray in the Synoptical 
