202 PITTONIA. 
14. SYRMATIUM NUDATUM, Greene (see page 173). 
15. Hosackta FLEXUOSA, Greene, Bull. Cal. Acad. i. 82. 
16. DaLEA MEGACARPA, Watson, Proc. Am. Acad. xx. 359. 
A single depressed shrub in a canon near the sea ; differing 
from Mr. Pringles Sonora type in that the branches are 
shorter and stouter, and the stipular base of the leaf-stalk 
develops a pair of persistent somewhat recurved spines two 
lines long or more; but there are mere traces of a similar 
development in the Sonora original. 
17. PHOTINIA ARBUTIFOLIA (Ait. f.) Lindl. Bot. Reg. t. 491. 
A few well grown shrubs in a deep shady canon; probably 
the southern limit of a species particularly abundant on coast 
islands far northward. 
18. HaUYA ARBOREA, Kellogg, Bull Cal. Acad. i. 137: 
CEnothera, Kell. Proc. Cal. Acad. ii. 32: Hesperian, March, 
1860, with figure. The plate in the Hesperian magnifies the 
beauty of this shrub. The flowers are far less numerous than 
represented, and the twigs which bear them are slender and 
almost leafless. The habit of the shrub is lithe and slender, 
the branches few, the height three to five feet. It was just 
beginning to flower at the end of April. 
19. (inorHEra CEpROsENSIS, Greene, Bull. Cal. Acad. i. 
187. One specimen obtained, in a half shrubby condition, 
as if a survival of the winter ; for I doubt not the species is 
annual, appearing in the rainy season of summer and autumn. 
It now occurs in Dr. Palmer’s 1887 collection from Sonora. 
20. MENTZELIA CORDATA, Kellogg, Proc. Cal. Acad. ii. 
33. Very common in clayey or stony ground along the 
Shores. The petals in this plant do not spread, but retain 
an erect position, forming an almost tubular corolla after 
the manner of the inner ranks of petals in certain caeta- 
ceous flowers. The figure in the Hesperian does not well 
