Ceanothm. RHAMNACE^. JQ3 



about an inch long. — FI. i. 2G8 ; T<nT. Bot. Mex. Bound. 46, t. 10. C. Lohbi- 

 amis, Hook. Bot. Mag. t. 4810. C. diversif alius, Kellogg, 1. c. i. 58 ik 65 1 



On dry hills in the Coast Ranges, from Santa Barbara (Miss S. A. riummcr) to Mendocino Co. 



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

 spreading jiairs : leaves rather thin, not undulate, ^ to 1^ inches long, elliptic- 

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

 teeth usually stipitato : flowers in short dense shortly j)eduncled racemes, which are 

 about half an inch long or loss. — C. soreJiatus, var., Torr. in Pacif. R. Rep. iv. 74. 



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



-«- -t- -{- Erect, with usuaUy rigid divaricate or spinose branches : flowers in simple 



racemes or clusters : leaves rather small. 



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



6. C. hirsutUS, Nutt. 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, | to 1 1 inches long, not smooth above : flowers in simple axillary 

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

 266. C. oliganthus, Nutt. in same. 



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



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

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

 glabro>is, silky on the nerves, oblong-ovato, ^ to li^ inchos long, Rubcordato or 

 rounded or ol'tnn acutish at base, acut(? or obtuse at the npex : 11o\V(M\s in shortly 

 podunclod 8imi)lo racemes, | to 2 inches long. — Jiot. Ik^echey, 328. C. nitidus, 

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



From San Diego to the Sacramento. 

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

 floivers mostly white, racemose. 



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

 ovate, J to I^ inches long, rounded at base, acute or obtuse above, not tomentose 

 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. COrdulatUB, Kellogg. Hirsutely pubescent with short erect or spread- 

 ing hairs : loaves (ival-olliptic, | to 1^ inches long, cuneate to subcordate at base, 

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

 flowers white, in short simple racemes, an inch long or loss : 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-topped, and much spreading ; 

 known as "Snowbush." 



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

 be referred here.) 



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

 and somewhat spiny branchlets, glabrous or nearly so : leaves somewhat coriaceous, 



