114 ERYTHEA. 
smaller: leaves linear, firm: heads 5-flowered, the 12 to 15 
bracts of the involucre oblong-lanceolate, somewhat arachnoid, 
the outer gradually, the inner abruptly cuspidate-acuminate: 
corolla-tube sparingly villous. 
Parks of the Colorado Rocky Mountains; but included by 
Dr. Britton in the list of plants of the Gray’s Manual region, 
I know not upon what grounds. 
22. €. Nevadensis. Linosyris Howardii, var. Nevad- 
ensis, A. Gray, Proc. Am. Acad, vi. 541 (1865). Bigelovia 
Nevadensis, A. Gray, Syn. F). 136 (1884). Taller than the 
last, the head more elongated, and bracts more numerous, 
hirsute-ciliate, all with long slender firm but recurved tips. 
Eastern slope of the Sierra Nevada in California, and 
adjacent Nevada. 
23. ©. Bolanderi. Linosyris Bolanderi, A. Gray, Proc. 
Am. Acad. vii. 354 (1868). Bigelovia Bolanderi, A. Gray, 
l. c. viii. 641 (1873). Aster Bolanderi, O. Ktze, 1. ¢. 317. 
Low, somewhat viscid: leaves spatulate-linear, acute, not 
rigid: heads somewhat corymbose or racemose toward and 
at the ends of the erect branches, mostly subtended by one or 
more reduced leaves; involucre 7 to 11-flowered, the bracts 
few not in vertical ranks, lanceolate-acuminate, the inner 
very thin, the margins cobwebby-ciliate. 
Same range as the preceding, though not closely allied to 
it, being much more analogous in several respects to Macro- 
nema discoideum, with which, as I have said before, it is 
much confused in the herbaria and by collectors. It were 
perhaps better to refer them to the same genus, i. e., either 
this to Macronema, or that to Chrysothamnus. The line 
between these two genera must be drawn arbitrarily if at all; 
unless the present one be restricted to that series in 
which the corollas are shorter and more deeply-cleft, and the 
style-tips broader and shorter; that is, the series ending 
with our number 10. 
