CATx\LOGUE. 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-elliptical, rather 
obtuse, subcordate, glandularlj crenate-serrulate, coriaceous, glabrous and 
shining above, velvety-canescent and strongly 3-ribbed beneath; panicles 
axillary, compound, on rather long peduncles. Var. LiEViGAXUS, T. & Gr. 
Leaves nearly glabrous beneath. — A densely growing shrub, usually 2-3° 
high, with leaves 2-3' long on petioles; flowers white. From Wasliingfon 
Territory to Colorado and Cahfornia. Frequent on the hl,i;licr inouiilaiiis 
from the Washoe Range 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-vrrnicosc ; 
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. V;ir. 
GLABRA. Leaves (i-1' long) glabrous or but slightly silky on the veins 
beneath, mostly broadly ovate and subcordate, denticulate or entire ; flrnvcrs 
white, in loose lateral panicles, longer than the leaves; a low shrul) ol" nit her 
slender habit, 2° high. Found only on the East Humboldt Motnihiins, 
Nevada; 8,000 feet altitude ; in flower, July, August. (212.) 
Ceanothus divaricatus, Nutt. Branches terete, pruinose ; Itranchlcfs 
spreading, usually thorny; leaves elliptic-oblong or oblong-ovjifr, suIk oi-I.k c- 
ous, 3-nerved, minutely glandular-serrate, glabrous and shiniiiij above, pah-r 
beneath and subjmbescent especially on the nerves; paiiicl. s chni'jniatl ajxl 
spicate-racemose, densely flowered ; flowers blue, clustered ; ovai-y suhirlolxjsc, 
without protuberances. California and Faslcni Orejron. X-.w. k(;lamh i-oscs, 
Torr. Pac. R. R. Surv., 4. 75. Leaves enfirc, ^very olWuse. Calilnrnia. 
C. cordtdaiusj Kell., (in Rroc. Calif. Acad, 2. 12 1, l-ig. .">:»,) IVoni Ww \\';i>!ioc 
Mountains, Nevada,. is probably this variety, with whitisli ilowcrs anrl ovatr;- 
cordate, often emarginate leaves. 
Ceanothus prostratus, Benth. IVant. Hartw., ]>. .'5' '2. Fn- 
glabrous, much branched; ])ranches and leaves o{){>o>i{e; 1* 
tricuspidate, (somelinies oManreolaie and entire, uficn uiM»\,iic-riin<Mif and 
