THE VEGETATION OF THE SUMMIT OF MOUNT HAMILTON. 81 
7. Trirotium Macrz1, Hook. & Arn.; Hook. Bot. Mise. 
iii. 179. 
8. Trrrotium TRIDENTATUM, Lindl. Bot. Reg., under t. 
075. 
9. TRIFOLIUM RoscIDUM, Greene, Fl. Fr. 31. In moist 
shades about Aquarius Springs. 
10. *MxEpiIcaGo DENTICULATA, Willd. Sp. Pl. iii. 1414. 
Observed only in a flower bed belonging to one of the 
employees, but in several specimens. 
11. Lvuprxus micrantuus, Dougl.; Bot. Reg. t. 1251. 
12. Lupinus rormosvs, Greene, FI. Fr. 42. 
13. Lupinus ALBIFRONS, Benth.; Bot. Reg. t. 1642. 
14. Tuermopsis Catrrornica, Wats, var. velutina. From 
one to two feet high, silvery-canescent throughout with a 
dense stiff and spreading, somewhat plush-like pubescence: 
leaflets slightly rhombic in outline, and mostly very acute. 
In the Flora Franciscana I have expressed a misgiving 
as to the validity of 7. Californica as a species. If the 
present plant had been its type, there would have been no 
doubt about its title to specific rank. But Mr. Watson named 
the Marin County plant as his type. That is far more like 
T. macrophylla than is this denizen of Mount Hamilton; 
and even the specimens from Monterey, which are in the 
State Survey collection and were included in T. Californica 
by the author, though a good deal more tomentose than the 
type, are still quite unlike, and much less densely pubescent 
than this new variety. It is common enough, on open grassy 
ridges westward from and a little below the Observatory, and 
also above Aquarius Springs. 
15. Cerasvs emarainaTa, Dougl.; Hook. Fl. Bor.-Am. 
i. 169. The wild Red Cherry occurs sparingly along the 
higher ridges, as a bush only three or four feet high. 
16. Crrasus pemissa, Nutt.; Torr. & Gray, Fl. N. Am. 
i.411. The Western Choke Cherry; frequent on northward 
slopes. 
