STUDIES IN CEANOTHUS. 187 



earliest, grosscso-rafiis, perhaps named a hj^brid ; at any 

 rate, specimens from near Nuevo, which agree with the 

 description, are without doubt hybrids with C . tonientostis. 

 Eglandiilosus is conspicuously misleading as a varietal 

 name of a species in which the presence of glands is 

 ground for suspicion of hybridity. 



7. Ceanothus incanus T. & G. 



a. incanus: branches short and very thick, minutely cauesceut; leaves 

 broadly ovate, obtuse, mostly subcordate, coriaceous, crenate-serrulate, 

 minutely velvety above, whitish and canescent beneath [3-ribbed from the 

 base]; clusters subsessile, axillary and terminal. California Douglas! — 

 Branches numerous, whitish with an exceedingly minute hoariness. 

 Leaves an inch or more in length, rather crowded. Flowers white, in dense 

 subglobose clusters, from very short and thick spurs or axillary branches. — 

 Torr. & Gray, Fl.N. Am., i, 266 (1838). 



This is one of the best marked species, though approach- 

 ing quite closely the preceding, from which in our pres- 

 ent knowledge it is separated chiefly by its warty fruit. 

 From the next it is distinguished by the same character 

 and by its much greater size and different distribu- 

 tion. It is found in scattered groups in both the outer 

 and inner Coast Range, from Santa Cruz to Mendocino. 

 The leaves are sometimes entirely glabrous. The large ^ 

 thickly warty fruit is often 4-coccous. No. 4, Bradford, 

 Lake County; No. 5, Felton, & No. 6, Ben Lomond, 

 Santa Cruz County; No. 60, hybrid with C . ^apillosus ; 

 No. 66, hybrid with C . thyrsijiorus. 



8. Ceanothus cordulatus Kell. 



Ceanothus cor (lulatus {Ke\\o(^(^. — Fig. 39 — A shrub four or five feet in 

 height, branches erect, flexuocie; branchlets numerous, verj' short, divari- 

 cate, leafy at the base, terminating in a stout thorn; whitish glaucous; 

 stems strictly terete. — Leaves small (i. e., one-quarter to one-half an inch 

 long, rarely three-eighths broad) three-ribeed (with two other outer obscure 

 nerves) ovate-cordate, entire, often emargiuate, reticiilate, with translucent 

 veins, short hirsute above and below, especially conspicuous along the 

 nerves beneath; petioles short, hirsute, in the mature state stout, seldom 

 one-sixteenth of an inch long, in the young state two or three times that 

 length and very slender, minutely pubescent; lamina becoming thickened 



