Ceanothus. RHAMNACEiE. 265 



2. C orflr/Af (Bigrl.): leaves narrowly ohlonn or elliptical^Ianccolate, ser- 

 rulate, with the teeth glandular, nearly glabrous ; thyrsus umbel-like, the 

 pedicels elongated and closely approximated ; peduncles and branches gla- 

 brous or slightly pubescent.— ^/ge/./. Host. eii. 2. p. 92; dray ! in ann. 

 lyc. New-York; 3. p. 224. C. intermedius, Hook. f. Bor.-Am. 1. /;. 1. 24, 

 not of Pursh ? 



p.l leaves (especially on the veins), young branches, and peduncles pu- 

 bescent. 



In barren rocky places, Canada ! and Northern part of New-York ! Michi- 

 gan, Dr. Pitcher! Vermont along Lake Champlain, Boott ! Dr. Rob- 

 bins ! i^c. M^ine, Mr. Oakes ! 0. Arkansas, A'lit I all! Dr. Leareiiworth ! 

 Texas, Drummond! May.— Shrub 2-3 feet high. Leaves l-2i inches 

 long, varying from oval to almost linear, acute at both ends, sometimes ob- 

 tuse at the apex, membranaceous, smooth and shining, or slightly pu- 

 bescent on the veins beneath, usually pubescent when very young ; the ser- 

 ratures tipped with black glands. Peduncles 1-2 inches long, naked or often 

 with one or two leaves just below the flowers. Thyrsus almost hemispheri- 

 cal, an inch and a half in diameter. Flowers white, lars^or than in C. Ameri- 

 canus : pedicels 8-10 lines long, white. "Fruit blackish", Uigelow ; in/?, 

 scarcely half as large as in C. Americanus, globose-turbinate, nearly the 

 lower lialf invested with the adherent calyx-tube. In /?.? the leaves are 

 usually smaller, and the pubescence of the veins, &c. is somewhat ferrugineous. 



3. C. sangninens (Pursh) : leaves obovate, pubescent beneath ; panicles 

 axillary, thyrsoid, on very short peduncles ; pedicels aggregated. Pursh, Jl. 

 1. p. 167 ; Kutt. gen. 1. p. 153 ; DC. prodr. 2. p. 32. 



IJanks of the Missouri, abundant below the confluence of the Platte, Nut- 

 tall ; near the Rocky Mountains, Lewis. — Branches reddish. — A much 

 larger plant than C. Americanus, which it considerably resembles. Nutt. 



4. C. Oreganus (Nutt. ! mss.): "leaves broadly ovate, subcordate, mostly 

 obtuse, serrate, membranaceous, somewhat pubescent beneath ; thyrsoid 

 corymbs in lateral panicles ; fruit small, globose, obtusely 3-lobed, without 

 pulp. — C. sanguineus, Hook. ! Jl. Bor.-Am. 1. p. 125, not of Pursh." 



Woods of the Oregon, from the Blue Mountains to the Sea, Douglas, 

 Nuttall ! Fort Vancouver, Dr. Scolder ! — A shrub 4-12 feet high ; the 

 stem and branches glabrous, reddish. Young leaves nearly obovate ; the 

 adult ones narrow at the summit, but scarcely acute, li-2i inches long, I-IJJ 

 inch wide, thin ; veins moderately prominent. Panicles large, many-flower- 

 ed, about 3 inches long, the lower divisions compound. Flowers larger than 

 in C. Americanus, white. Fruit smaUer than a peper-corn. — Very distinct 

 from the preceding, according to NuttaU. 



5. C. V el utimis (Douglas): branches somewhat pendulous ; leaves orbicu- 

 lar-elliptical or eUiptical-ovate, obtuse, subcordate, glandularly crenate-serru- 

 late, coriaceous, glabrous and shining (as if varnished) above, velvety-canes- 

 cent and strongly 3-ribbed beneath ; panicles axillary, elongated, on rather 

 long peduncles. — Hook. ft. Bor.-Am. 1. p. 125, t. 45. 



Subalpine hills near the sources of the Oregon, and at the "Kettle Falls", 

 Douglas ; hills of Bear River, near the ' Seltzer Springs', Nuttall! — A 

 shrub 3-8 feet high, Douglas (scarcely more than knee-high, Nutt. ; some- 

 times covering the whole declivity of a hill, forming a thicket ver^^ difficult 

 to penetrate, Nidt.) ; branches nearly glabrous. Leaves 2-3 inches long, 

 sometimes much larger, the lower surface almost velvety when young, but 

 smoother when mature : petioles half an inch or more in length. Panicles 

 thrice compound. Flowers white. " Fruit dry, 2-3-seeded ; cocculi charta- 

 ceous", Hooker. — The leaves abound with an aromatic resin. 



6. C. incanus : branches short and very thick, minutely canescent ; leaves 

 broadly ovate, obtuse, mostly subcordate, coriaceous, crenate-serrulate, mi- 



34 



