o 
vot. 5] New Species of California Plants. 83 
mm. wide, variable and passing to the form of the innermost by 
gradations. Rays sterile, conspicuous, 2-3 cm. long, 5-7 mm. 
wide, obtuse or emarginate. Chaff of the receptacle boat-shaped, 
Striate, hairy near the apex, 5-7 mm. long; receptacle flat, 
pitted with triangular or quadrangular, shallow depressions: tube 
of the corolla dilated above the insertion of the stamens, gla-- 
brous; divisions 5 acute, thick, hairy; akenes cuneate, sometimes 
ciliate near the apex of the narrow wing, with pappus of 2 or 3 
glabrous or hispid awns which are generally deciduous on the 
ripe akenes. Seed dark brown, somewhat glossy, glabrous 
except for a few occasional hairs, tumid, cuneate, emarginate, 
9-11 mm. long, 5-8 mm. wide. 
This showy Helianthella is found on the hills of San Fran- 
cisco. It was first collected by Miss Evelina Cannon, on Bay 
View Hills, May, 1892; later it was collected by the author on 
the Presidio Hills and Bay View Hills. It is most abundant at 
the last-named locality. Indeed, recent search has failed to 
rediscover it at the former locality, and it may now be extinct 
there. Changes are being continually made incident to the 
growth of the city and improvement of the Presidio as a military 
station. 
It is probably the Helianthella collected by Frank H. Vaslit 
on hills east of Ocean View, which was identified with AH. Cal- 
ifornica Gray (Zoe 11, 75). No specimen of this is in the 
herbarium of the Academy, and it was probably not preserved. 
Any one who has seen the two species could not fail to recognize 
their separate identity. A. Cannone differs from H. Californica 
in habit, foliage, akenes, and pappus, but especially in the large 
showy heads, framed by the long leaf-like bracts. 
It is named in honor of Miss Cannon, who first collected it 
and who has done much to increase our knowledge of the plants 
of San Francisco Peninsula. oe 
Sphacele = gracilis. Shrubby at base with spreading 
branches 3-6 dm. high; old stems with light brown, shreddy 
bark; young stems reddish, slender, becoming filiform at the 
upper extremity, quadrangular and striate; entire plant except 
corolla clothed with very fine, white pubescence and sessile, 
