Ceanothus. RHAMNACE^. -iqo 



about an inch long. — Fl. i. 268 ; Terr. Bot. Mex. Bound. 46, t. 10 C Lobbi 

 anus, Hook. Bot. Mag. t. 4810. C. diversifolius, Kellogg, 1. c. i. 58 & 65 1 



On dry hills in the Coast Ranges, from Sauta Barbara {Mrs. S.A. Pluvimcr) to Mendocino Co. 



5. C. decumbens, Watson, 1. c. Slender, trailing, hirsutely pubescent with 

 spreading hairs: leaves rather thin, not undulate, i to l}, inches long, ellipti.-- 

 oblong, obtuse or acutish, somewliat cuneate at base," the gi^eenish gland.s'upon tlio 

 teeth usually stipitate : flowers in short dense shortly peduncled racemes, which are 

 about half an inch long or less. — C. sorediatus, var., Torr. in Pacif. li. Eep. iv. 74. 



Freqnent in the Sierra Nevada, from the Mariposa Grove northward. 



-f- -t- -i- Erect, ivith usiiallt/ rigid divaricate or spinose branches : flowers in simple 

 racemes or clusters : leaves rather small. 



++ . 



Rareh/ or never spinose : leaves glandular-serrate : flowers blue, racemose. 



6. C. hirsutus, ISTutt. Silky-pubescent with soft subappressed or spreatling 

 hairs, or sometimes hirsute ; the branches rather rigid and said to be sometimes 

 spinose : leaves ovate to oblong-ovate, usually subcordate or rounded at base and 

 acute at the apex, | to 1| inches long, not smooth above : flowers in simple axillary 

 and terminal racemes, 1 to 3 inches long, or rarely thyrsoid. — Torr. & Gray, Fl. L 

 266. C. oliganthus, I^utt. in same. 



About Santa Barbara, and in the Santa Susanna Mountains, NiUtall, Wallace, Brewer. 



7. C. sorediatus, Hook. & Arn. Branches nearly glabrous, the inflorescence 

 pubescent : leaves smooth above, more or less tomentose beneath or rarely nearly 

 glabrous, silky on the nerves, oblong-ovate, |- to U inches long, subcordate or 

 rounded or often acutish at base, acute or obtuse at" the apex : flowers in shortly 

 peduncled simple racemes, | to 2 inches long. — Bot. Beechey, 328. C. nitidtis, 

 Torr. in Pacif. E. Eep. iv. 75. C. asureus, Kellogg, 1. c. i. 55. 



From San Diego to the Sacramento. 



++ +-!- Branches mostly spino.<ie, grayish : leaves usually entire, somewhat coriaceous : 

 floivers mostly white, racemose. 



8. C. divaricatus, Nutt. l^early glabrous : leaves oblong to oblong-ovate or 

 ovate, |- to 1 1 inches long, rounded at base, acute or obtuse above, not tomento.se 

 beneath : flowers light blue or white, in nearly simple often elongated racemes, 1 to 

 4 inches long : fruit resinous, 3 lines in diameter. — Torr. & Gray, Fl. i. 266. 



From San Diego northward to Oregon. The spines often wholly wanting, and branches green. 



9. C. incanus, Torr. & Gray. Leaves hoary beneath with a very minute 

 tomentum, broadly ovate to elliptic, | to 2 inches long, cuneate to cordate at base, 

 acutish or obtuse at apex : flowers in short racemes : fruit resinously warty, over 

 two lines in diameter. — Fl. i. 265 ; Hook. & Arn. Bot. Beechey, 328. 



From Santa Cruz to Lake County ; a large straggling shrub on the banks of creeks. 



10. C. COrdulatus, Kellogg. Hirsutely pubescent with short erect or spread- 

 ing hairs: leaves oval-elliptic, h to 1| inches long, cuneate to subcordate at base, 

 usually rounded and sometimes serrate at the apex, the serratures scarcely glandular : 

 flowers white, in short simple racemes, an inch long or less : fruit smaller, not resin- 

 ously dotted. — Proc. Calif. Acad. ii. 124, flg. 39. C. divaricatus, var. eglandulosus, 

 Watson, Bot. King Exp. 51. 



In the Sierra Nevada from the Yosemite northward. Low, flat-toppeil, and much spreading ; 

 known as "Snowbush." 



* =k Leaves jyinnately veined : floivers blue. (Small-leaved forms of C f/c«^(T^«5 may 

 be referred here.) 



1 1. C. spinosus, Nutt. 1. c. Becoming a small tree, 20 to 30 feet high, with rigid 

 and somewliat s^nny branchlets, glabrous or nearly so : leaves somewhat coriaceous, 



