256 



RHAMXACEiE. 



2. C. integerrimus H. & A. Tall shrub, 10 to 15 ft. high; twigs 

 green or at lenuth purplish subangular when young; leaves deep 

 green above, paler beneath, oblong-elliptie, obtuse, mostly acute at 

 base, entire, \ to 1 in. long; inflorescence simple and about 2 in. long, 

 or compound and about 4 in. long, or in fruit twice as long, equaled 

 by the leafy (or often nearly leafless) peduncles; flowers white; cap- 

 sules nearly globose, lobed, smooth, erestWs. 



Seemingly very restricted in its range: Santa Cruz Mountains. 

 May. Fruiting in July. 



3. C. thyrsiflorus Esch. California Lilac. Low shrub, 3 

 to 6 ft. hi^h or becoming a small tree 12 to 18 ft. high, rather straight- 

 limbed, the branchlets mostly ascending; leaves green on both sur- 

 faces, elliptical or oblong-ovate, strongly 3-nerved beneath, the 

 margin mucronate-serrate or serrulate with somewhat impressed 

 teeth, 1 to '2\ in. long, 6 to 10 lines broad; inflorescence a panicle 

 of somewhat corymbose racemes, 1^ to 2f in. long, mostly long- 

 peduncled, with leaves subtending 1 or 2 ot the lower racemes; bract- 

 lets ovate, acuminate, 2J lines long; flowers blue or sometimes varying 

 to white; capsule globose, smooth, little lobed, 2 lines in diameter. 



Common near the coast from Monterey northward to Sonoma and 

 Mendocino Cos. Apr. Near Soquel, Setchell and Jepson discovered, 

 in 189tf, a fine shapely tree 22 ft. high, with a girth of 2 ft. 5 in. at 

 20 in. from the ground. 



4. C. Parryi Trelease. Parry's Lilac. Spreading shrub, 4 to 

 6 ft. high; branchlets angular and, when young, tomentose, the 

 1 -year-old ones reddish; leaves pinnately veined, narrowly to broadly 

 oblong, | to lj in. long, dark green above, loosely tomentose beneath, 

 the margin denticulate, seemingly entire because soon revolute and 

 thus concealing the teeth and also the lateral supplementary nerves; 

 petioles 2 lines long; panicle oblong or distinctly broader below, 1 to 

 3 in. long, on sparsely leafy peduncles twice as long; capsules globose, 

 smooth, 2 lines in diameter. 



Local species of the mountain ranges on either side of Napa 

 Valley: Mt. George; Caux's Knob; Rebecca Ranch grade, southwest 

 of Caiistoga. A most handsome shrub when in full flower in Apr. or 

 early -May; at other seasons of straggly and unattractive habit, the 

 individuals often seaming as if of great age. Sometimes found in 

 flower in the late fall and early winter. Margin of leaf variable, 

 sometimes serrate, more often rather obscurely denticulate or almost 

 entire. 



5. C. foliosus Parry. Low shrub commonly dense at base, with 

 horizontally spreading or diffuse branches 2 or 3 ft. long; branchlets 

 rather long and straight and rather ascending; lightly pubescent, 

 especially on the branchlets; leaves undulate or somewhat infolded 

 longitudinally, mostly 3 or 4 or the larger 6 lines long, frequently 

 with smaller ones fasculed in their axils, broadly oblong, upper sur- 

 face dark green, lower lighter, the teeth of the margin bearing con- 

 spicuous glands; petiole distinct but very short; inflorescence globose 



