338 PROCEEDINGS OF THE AMERICAN ACADEMY 



inches long, on slender petioles ; flowers blue, in close clusters or short 

 racemes terminating slender naked peduncles ; fruit 1^ lines broad, not 

 resinous. — Coast Range, from Monterey to San Francisco ; Douglas, 

 Bolander («.), Dr. Gray. 



22. C. FLORiBUNDUS, Hook. Bot. Mag. t. 4806. Pilose-scabrous ; 

 leaves small, 3-4 lines long, oblong, acute, glandularly denticulate 

 and undulate, shortly petioled ; flowers blue, in dense globose clusters 

 sessile at the ends of the short branchlets. — Known only fi'om the 

 figure and description in the Botanical Magazine ; raised from Cali- 

 fornian seeds, and closely related to Q. dentatus. 



23. C. Veatchianus, Hook. Bot. Mag. t. 5127. Glabrous nearly 

 throughout ; leaves thick, obovate-cuneate, rounded at the apex ; glan- 

 dular-serrate, smooth and shining above, minutely tomentose beneath 

 between the veinlets, 6-9 lines long, on short stout petioles ; flowers 

 bright blue, in dense crowded clusters at the ends of the leafy branches. 

 — Likewise known only from figures and descrijDtions of specimens 

 cultivated in foreign gardens. 



§ 2. CERASTES. Leaves mostly opposite, 1 -ribbed, with numerous 

 straight parallel veins, very thick and coriaceous, spinosely toothed 

 or entire ; flowers in sessile or shortly pedunculate axillary clusters; 

 fruit larger, with three hornlike or warty prominences below the 

 summit. Rigidly branched or I'arely spiny shrubs, with small leaves; 

 stipules mostly swollen and warty. 



24. C. cuASSiFOLius, Torr. Erect, 4-12 feet high, the young 

 branchlets white with a villous tomentum; leaves ovate-oblong, -^-1 

 inch long, obtuse or refuse, more or less tomentose beneath, rarely 

 entire and revolutely margined, the petioles very thick ; flowers light 

 blue or white, in dense very shortly peduncled clusters. — In the Coast 

 Range from Mendocino County to San Diego ; Bigelow, Parry, Wal- 

 lace, Brewer (n. 295), Bolander (n. 4713), and Kellogg. 



25. C. CUNEATUS, Nutt. Erect, 3-12 feet high, less tomentose or 

 nearly smooth ; leaves cuneate-obovate or -oblong, rounded or retuse 

 above, on rather slender petioles, entire or very rarely few-toothed ; 

 flowers white or occasionally light blue, in rather loose clusters. — 

 From the Columbia River to Santa Barbara, by numerous collectors. 



26. C. Greggu, Gray. Closely resembling the last, but more 

 tomentose, and the leaves not cuneate at base ; 5 feet high. — From 

 Northern Arizona to New Mexico and Northern Mexico ; Gregg, 

 Wright, Bigelow (C. cuneatus of Ives's Report), and Bishop. 



