107 
OBSERVATIONS ON THE COMPOSITH.—X. 
By Epwarp L. Greene. 
Wir species No. 8, on page 96 preceding begins the suc- 
cession of four shrubs, all differing, each in its own way, 
from the best type of CHrysorHamNus. They are all, never- 
theless, best retained here, at least until better known. 
9. C. pulchellus. Linosyris pulchella, A. Gray, Pl, 
Wright. i. 96 (1852). Bigelovia puichella, A. Gray, Proc. 
Am. Acad. viii. 643 (1873). Tall and freely branching, the 
bark quite white: leaves narrowly linear, obtuse, glabrous: 
heads # inch long: large 5-angled achenes glabrous; pap- 
pus very firm, copious and accrescent. 
Plant of most peculiar aspect, quite suggestive of the 
Eupatoriaceous genus Carphochele which inhabits the 
same region. No other Chrysothamnus has such a pappus. 
10. C. pepressus, Nutt. P). Gamb. 171 (1848). Linosy- 
ris depressa, Torr. in Sitgr. Rep. 161. Bigelovia depressa, 
A. Gray, 1. c. Of the same general region with the pre- 
ceding, though of more northerly range, and allied to it. 
11. C. albidus. Bigelovia alvida, M. E. Jones, in 
Gray, Proc. Am. Acad. xvii. 209 (1882). A most anomalous 
species, not only by its white flowers. Its corolla is deeply 
cleft as in no other Chrysothamnus. The leaves are almost 
terete and not indistinctly punctate as well as very glutinous. 
The shrub were almost as well referred to the genus Chry- 
soma; but its involuere is more like that of certain Chry- 
sothamni, namely those here placed toward the end of 
the series. 
All the shrubs that follow are still more notably, are more 
concordantly, diverse from the typical CHRYSOTHAMNUS. 
They are of coarser and more broom-like growth, with softer 
more pithy wood, and the stems are usually clothed at least 
when young, with a dense white tomentum. The twigs and 
Eryraza, Vol. IIL, No. 7 [1 July, 1895]. 
