112 ERYTHEA. 
Var. occidentalis. More slender and taller; stems less 
tomentose ; leaves narrower but distinctly and rather broadly 
linear: heads not as long ; bracts of involucre abruptly and 
somewhat cuspidately acute. 
In the Coast Range, from Humboldt County southward. 
Plant not well known. 
The species succeeding, are distinguished by a more thy rsi- 
form arrangement of the heads, and with the exception of the 
last one, by a more sparse and less elongated foliage. 
15. C. frigidus. Chrysocoma nauseosa, Pall. in Pursh?? 
Stoutish, seldom 2 feet, often less than one foot high, the 
branches of the season erect, numerous, whitish-tomentose : 
leaves narrowly linear, seldom 2 inches long, acute, erect or 
ascending, distinctly white-tomentose, seldom glabrate : heads 
mostly thyrsoid-panicled, 4 or 5 lines high, bracts in not very 
distinct vertical ranks, the outer acute, the inner obtusish, all 
more or less tomentulose and glandular, the margins deli- 
cately ciliate at least near the summit : corolla-tube sparingly 
short-hairy, not at all elongated, widening gradually to the 
abruptly subélaviform rather deeply cleft throat: style- 
appendages much longer than the wholly included stigmatic 
t. 
Plentiful on the elevated bleak plains about Laramie, 
Wyoming, and eastward to the borders of Utah. Without 
knowledge of the type specimens it is impossible to say 
whether this plant or our number 13 is the basis of the 
scarcely published Chrysocoma nauseosa of Pursh’s Flora. 
16. C. Bigelovii. Linosyris Bigelovii, A. Gray, Pac. 
R. Rep. tiv. 98, t. 12 (1857).  Bigelovia Bigelovii, A. 
Gray, Proc. Am. Acad. ]. ¢ 642 (1873). Aster binomi- 
natus, O. Ktze. Rev. Gen. 315 (1891). Size of the pre- 
ceding, but erect branches of the season quite slender, reedy 
and very sparsely leafy : leaves short, involute; involucral 
bracts in very distinct vertical ranks and numerous (4 or 5 in 
each rank). 
Dry plains of southeastern Colorado and adjacent New 
Mexico, 
