NEW GENUS OF ASTEROID COMPOSIT®. 29 
panicles which terminate the branches: flowering season 
August.—Diplostephium § Aplostephium, Gray, Proc, Am. 
Acad. xi. 75: species of Corethrogyne, Greene, and differing 
from that genus mainly by its habit, the paucity, reduced 
size, and different color of its ray-corollas, and the absence of 
those tufted hairs which adorn the style-tips of Corethrogyne. 
The name will signalize the eminent services rendered to 
Californian insular botany by Mr. Barclay Hazard, of Santa 
Barbara, the discoverer of Lyonothammus asplenifolius, and 
our ready and generous helper in the matter of those fuller 
explorations of several of the Santa Barbara group of islands 
which have recently been made. 
1. H.cawa. Leaves of thin texture, 3—4 inches long, spatu- 
late-oblong, tapering to a short, winged petiole, very entire.— 
` Diplostephium canum, Gray, |.c.: Corethrogyne cana, Greene, 
Bull. Cal. Acad. i. 223. 
This species belongs to Guadalupe Island, having been dis- 
covered there by Dr. Palmer in 1875. During my own brief 
sojourn there two years ago, I could find but a single speci- 
men, and that was growing in a niche, some twenty feet above 
the base of a perpendicular cliff near the summit of the island. 
It was thus quite out of my reach. On the day before our 
departure I availed myself of the services of a Lower Califor- 
nian Indian who, by throwing stones at the bush, brought 
down two or three leafy branches together with some dead 
involueres of the preceding season. All these precious frag- 
ments I still hold in possession, not doubting that the shrub 
that bore them, if still surviving, is the only one extant of its 
species. This shrub must have been about six feet in height, 
and seemed to be in the decline of old age. 
2. H. peronsa. Leaves of firm texture, 3—5 inches long, 
obovate-oblong, coarsely serrate toothed, the upper surface of 
the older partly divested of that white tomentum which covers 
all other parts of the plant.—Corethr ogyne detonsa, Greene, 
Bull. Torr. Club. x. 41: Gray, Syn. Fl. i. part 2. 170. 
