Ceanothus. RHAMXACEA 103 



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

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



On dry liills in the Coast Ranges, from Santa Barbara (Mrs. S. A. Plummcr) to Mendocino Co. 



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

 spreading hairs: leaves rather thin, nut undulate, i- to li inches long, elliptic- 

 oblong, obtuse or acutish, somewhat cuneato at base, the greenish glands upon the 

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

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



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



-f- -f — (- Erect, with usual/// rigid divaricate or spinose branches : flowers in simplt 



racemes or clusters : leaves rather small. 



++ Rarely or never spinose : leaves glandular-serrate : flowers blue, racemose. 



6. C. hirsutus, Xutt. Silky-pubescent with soft subappressed or spreading 

 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, i to H inches long, not smooth above : flowers in simple axillary 

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

 266. C. oliganthus, Xutt. in same. 



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



7. C. sorediatus, Hook. & Am. 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 li inches long, subcordate or 

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

 pei 1 uncled simple racemes, & to 2 inches long. — Bot. Beechey, 328. C. uilidus, 

 Torr. in Pacif. R. Rep. iv. 75. G. azureus, Kellogg, 1. c. i. 55. 



From San Diego to the Sacramento. 



++ ++ Branches mostly spinose, grayish : leaves -usually entire, somewhat coriaceous : 

 flowers mostly white, racemose. 



8. C. divaricatus, Xutt. Nearly glabrous : leaves oblong to oblong-ovate or 

 ovate, /j to 1 | inches long, rounded at base, acute or obtuse above, ie>t t<>nientose 

 beneath : flowers light blue 01 white, in nearly simple often elongated raceim -. I to 

 •I inches long : fruit resinous, 3 lines in diameter. — Torr. & t (ray, Fl. i. 266. 



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



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

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

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

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



From Santa ( Yuz to Lake County ; a largo straggling shrub on the banks of creeks. 



10. C. cordulatus, Kellogg. Hirsutely pubescent with short erect orspread- 

 ing hairs : leaves oval-elliptic, .', to 1 j inches long, emirate 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, nol resin- 

 ously dotted. — l'roc. Calif. Acad. ii. 124, fig. •">'.>. C. divaricatus, var. cg/aw/nlcisim, 

 Watson, Bot. King Exp. 5 1 , 



In the Sierra Nevada From the Yosemite northward. Low, flat-topped, and much spreading ; 

 known as "Snowbush." 



* * Leaves pinnately veined : flowers blue. (Small-leaved forms of C may 



he referred here.) 



11. C. spinosus, Nuti. I.e. Becoming a small tree, 20 to 30 feet high, with 



and somewhat Bpiny branchlets, glabrous or Dearly so: lcavessomewh.it coriaceous, 



