82 RHAMNEiE. 



angular when young, and warty in age : leaves ovate, 1—3 in. long, 

 prominently triple-veined, pubescent or glabrate, entire or very slightly 

 glandular serrate : thyrse long and dense, terminating leafy branchlets : 

 fl. from deep-blue to white. — One of the most common species of the 

 higher Coast Kange hills and foot-hills of the Sierra, and very ornamental. 

 ++ -M- Leaves thin or svbconaceous, plane, glandular-ioolhed. 



4. C. diversifolius, Kellogg, Proc. Calif. Acad. i. 58 & 65 (1855) ; 



C decumhenn, Wats. Proc. Am. Acad. x. 335 (1875). Semi-herbaceous, 

 decumbent and somewhat cree'ping, the branches a few inches to a foot 

 long or more, hirsutely pubescent : leaves thin, }4 — 1/^ ^^- ^ong, elliptic- 

 oblong, obtuse or acutish, glandular-denticulate, the glands stipitate : 

 thyrse short, the umbels sessile : fi. sky-blue, few and long-ijedicelled : 

 capsule with narrow wing-like crests. — At middle elevations on the 

 western slope of the Sierra, in pine woods, where it carpets the ground 

 almost for miles in certain districts. 



5. C. Leiiiiiioni, Parry, Proc. Davenp. Acad. v. 192 (1889). Branches 

 erect or ascending, rather rigid, never even decumbent ; bark of a light 

 gray, only the growing shoots and the foliage pubescent : leaves oblong 

 or elliptical, 1 in. long or less, glandular-serrate, often whitish tomentulose 

 beneath : fl. as in the preceding : fr. conspicuously crested at summit. — 

 Foot-hills of the Sierra along the upper Sacramento, Mrs. Gates, Mr. 

 Lemmon. Very unlike the last in vegetative character, habit, fruit, etc., 

 and of another habitat. First indicated to Dr. Parry as an undescribed 

 species, in specimens collected by Mrs. Gates at Rose Springs in 1874, 

 and preserved in the Herbarium of the University at Berkeley. 



6. C. foliosus, Parry, Proc. Davenp. Acad. v. 172 (1889). Low, slender, 

 the erect stems 2 — 3 ft. high, with many ascending very leafy branches ; 

 nascent parts pubescent : leaves subcoriaceous, often fascicled, glaucous 

 beneath, deep but dull green above, 2 — 5 lines long, obovate or oval, 

 obtuse, short-petioled, closely denticulate, the mucronate teeth having 

 very large rather deciduous resin-glands : fl. few, light blue, in a simple 

 usually capitate raceme on a slender more or less leafy-bracted peduncle : 

 capsule sharply crested at summit. — Wooded hills of Napa, Sonoma and 

 Lake counties. Collected by the author, near the Geysers, in 1874 ; ten 

 years later, near St. Helena by Mr. Rivers, whose specimens were shown 

 to Dr. Parry, and the specific characters indicated. 



7. C. tomentosus, Parry, 1. c. 190. Erect, 4—8 ft. high, with rather 

 few slender spreading branches ; bark glabrous and brownish on old 

 branches, rusty -tomentose on the -growing ones : leaves coriaceous, 

 short-petioled, ^^ — 1 in. long, ovate, obtuse, serrate, dark green and 

 tomentulose above, densely white-tomentose beneath : thyrsus short and 

 short-peduncled ; umbels pedicellate, few-flowered : fl. deep blue : fr. 



