l88 CALIFORNIA ACADEMY OF SCIENCES. 



and coriaceous, persistent. — Stipules cubulate, hirsute. Leaves alternate 

 in fasiculate clusters, somewliat conescent beneath. — Flowers in thyrsoid 

 panicles one to two inches in length, springing from the summit or ap- 

 proximate lateral branchlets; peduncle and pedicels sub-glabrous. — Calyx 

 petals and pedicels white at the time of blossoming, but bright pea-green 

 before expansion; panicles sometimes leafy at the base. — The form of 

 flowers as usual in this genus; calyx divisions inflexed turbinate; petals 

 saccate or hooded; uuguiculate pistil three-i^arted about one-third its 

 length. Fruit iinknown. — This species appears to be near C. Mrsutus 

 (Nutt.); but the leaves are not "nearly sessile," nor " glandularly ser- 

 rulate, " nor " panicles terminal." Nor does it answer to C . divaricatus 

 (Nutt.), as the leaves are not " grandularly serrulate," and seldom half the 

 size; nor are the flowers "blue." [Washoe, J. A. Veatch]. — Proc. Cal. 

 Acad., ii, 124 (1861). 



From Oregon to San Pedro Martir in Baja California 

 and eastward in the mountains of Nevada, at elevations 

 of 4000-10,000 feet, principall}^ in the Sierra Nevada, 

 but occurring on Snow Mountain in Lake County. It is 

 known as " snowbush " or "bluebrush," and forms en- 

 tangled thickets 2-6 feet in height, the green and glau- 

 cous forms often intermingled. Throughout California, 

 as far as known, the flowers are white, but on San Pedro 

 Martir they are of all shades, from white to purplish blue. 

 The fruit is resinous, rarely warty, and with moder- 

 ately developed crests. Some forms make a ver}^ close 

 approach to C. incanus. There are anomalous plants in 

 the mountains of Nevada and Utah not yet sufficienth' 

 known which may possibly belong to some other species. 

 No. 7, Donner, Placer County; No. 8, Mt. Shasta; No. 

 109, San Pedro Martir, Baja California; No. 9, a com- 

 mon hybrid with C . veliitinns which answers very closely 

 to C. sorcdiatus var. glabra;* No. 67, hybrid with C. 

 integerrimus. 



*Geanothns sorcdiatus 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 ijauicles, longer than 

 the leaves; a low shrub of rather slender habit, 2" high. Found onlj- on 

 the East Humboldt Mountains, Nevada; 8, 000 feet altitude; in flower July, 

 August. (212). — Sereuo Watson in King's Report, 51 (1871). 



