KHAMNE^I. 77 



green above, 2 — 5 lines long, obovate, or oval, obtuse, short-petioled, 

 closely denticulate, the mucronate teeth having very large rather decid- 

 uous 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 Marin 

 counties. 



■k- -i— Branches spinesceni; flowers in smaller clusters. 



7. C. (li vnri cut us, Nutt. Eigidly and diffusely branched, the 

 branches spinesceni and divaricate, nearly glabrous: leaves ovate to 

 oblong, X — 1J£ in. long, rounded at base, acute or obtuse at summit, 

 not tomentose beneath, entire or minutely glandular-serrulate: racemes 

 rather lax, often leafy; fl. blue or white: fr. of middle size, very resinous. 

 — In the Coast Eange; very common. 



8. C. incanus, Torr. & Gray. Spinescent branches thick and stout, 

 minutely cauescent, the foliage also cinereous- velvety and pale: leaves 

 coriaceous, tomentose beneath, broadly ovate or elliptical obtuse, sub- 

 cordate at base or somewhat cuneate, %—2 in. long: fl. white, in short 

 racemes from thick spurs or axillary branchlets : fr. 2 lines in diameter, 

 resinous and warty. — In the Coast Eange. 



9. C. sorediatus, Hook. & Arn. Shrubby or arborescent, 5—10 ft. 

 high, nearly glabrous : branches spreading or recurved, and with short 

 stiff branchlets : leaves subcoriaceous, glossy above, glabrous or somewhat 

 tomentose beneath, but silky along the veins, oblong-ovate, }4 — IK ™> 

 long, rounded or subcordate at base: racemes of deep blue, % — 2 in. long, 

 usually not longer than broad. — Plentiful on Mt. Tamalpais, on the 

 northern slope; common in the Berkeley Hills. March — May. 



* * Evergreen shrubs; branches small-leaved, with warty stipules; leaves 



opposite, coriaceous, closely pinnate-nerved ; fruit with 3 horns. 



■*- -t— Shrubs erect, with short rigid branchlets. 



10. C. cuneatus (Hook.), Nutt. Stems clustered, 6—12 ft. high, the 

 branchlets short and remote, glabrous or nearly so: leaves cuneate-obo- 

 vale, or oblong, obtuse or refuse, entire, }4 in. long or less, exceeded by 

 the profuse simple subsessile umbellate clusters of rather large dull- 

 white heavy-scented flowers: fr. rather large; horns short, erect. Var. 

 ramulosns, Greene. Smaller, the branchlets more numerous and more 

 leafy: leaves narrower and longer, more tomentose beneath: fl. half as 

 large, scentless, deep blue: fr. smaller and more elongated. — The type 

 on Mt. Diablo and near Los Gatos: the variety in the Coast Eange only. 

 February — April. 



11. C. ilivergens, Parry. Low, almost diffuse, the long rigid diver- 

 gent branches sometimes almost trailing, pubescent when young: leaves 1 



