CATALOGUE. 51 



Mountains to Colorado and New Mexico, and in Northern California. In the 

 Eaft River and Wahsatch Mountains, Utah ; 5-7,000 feet altitude. (210.) 



RHAMNE^. 



Ceanothus velutinus, Dougl. Leaves round or ovate-eUiptical, rather 

 obtuse, subcordate, glandularly crenate-serrulate, coriaceous, glabrous and 

 shining above, velvety-canescent and strongly 3-ribbed beneath ; panicles 

 axillary, compound, on rather long peduncles. Var. LiEviGATUS, T. & G. 

 Leaves nearly glabrous beneath.^A densely growing shrub, usually 2-3° 

 high, with leaves 2-3' long on J' petioles; flowers white. From Washington 

 Territory to Colorado and California. Frequent on the higher mountains 

 from the Washoe Eange to the Wahsatch ; 7-9,000 feet altitude ; June- 

 September. The more pubescent form was not seen. (211.) 



Ceanothus soeediatus, H. & A. Branches terete, resinous-verrucose ; 

 branchlets spreading, somewhat silky; leaves elliptic-ovate, obtuse, somewhat 

 coriaceous, glandular-denticulate, 3-ribbed, glabrous above, canescent beneath, 

 silky on the nerves ; clusters many-flowered, dense, scarcely exceeding the 

 leaves; flowers blue; ovary without lobes.^ — Frequent in California. Var. 

 GLABRA. Leaves (J-1' long) glabrous or but slightly silky on the veins 

 beneath, mostly broadly ovate and subcordate, denticulate or entire ; flowers 

 white, in loose lateral panicles, longer than the leaves ; a low shrub of rather 

 slender habit, 2° high. Found only on the East Humboldt Mountains, 

 Nevada; 8,000 feet altitude ; in flower, July, August. (212.) 



Ceanothus divaeicatus, Nutt. Branches terete, pruinose ; branchlets 

 spreading, usually thorny ; leaves elliptic-oblong or oblong -ovate, subcoriace- 

 ous, 3-nerved, minutely glandular-serrate, glabrous and shining above, paler 

 beneath and subpubescent especially on the nerves ; panicles elongated and 

 spicate-racemose, densely flowered ; flowers blue, clustered ; ovary subglobose, 

 without protuberances. California and Eastern Oregon. Var. eglandulosus, 

 Torr. Pac. R. R. Surv., 4. 75. Leaves entire, very obtuse. California. 

 C. cordiilatus, Kell., (in Proc. Calif. Acad., 2. 124, Fig. 39,) from the Washoe 

 Mountains, Nevada, is probably this variety, with whitish flowers and ovate- 

 cordate, often emarginate leaves. 



Ceanothus peosteatus, Benth. Plant. Hartw., p. 302. Prostrate, 

 glabrous, much branched ; branches and leaves opposite ; leaves cuneate, 

 tricuspidate, (sometimes oblanceolate and entire, often obovate-cuneate and 



