114 RHAMNACE^E. CEANOTHUS. 



season's growth. 



C. sail i; mucus Pursh Fl. 167. A stout shrub 4-12 feet high with 

 terete reddish branches: leaves thin, 1-4 inches long, ovate to elliptical, 

 finely serrate, pubescent beneath, on slender petioles 6-15 lines long, decid- 

 uous: whole inflorescence white, 1-4 inches long, pubescent, the numerous 

 flowers fascicled on the sides and at the ends of the short lateral branches: 

 style shorter than the stamens, 3-lobed. Common on rocky hillsides, Brit. 

 Columbia to northern California and Montana. 



< Inflorescence on lateral shoots of the previous year's growth or 

 terminal on leafy shoots of the present season's growth. 



C. velutimis Dougl. Hook. Fl. i, 125, t. 45, (MOUNTAIN BALM). A 

 smooth shrub 2 6 feet high, with terete green branches, cespitose, often 

 decumbent at base, the branches somewhat pendulous; leaves orbicu- 

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

 above, serrulate, coriaceous, glabrous and shining above, (as if var ashed 

 and exuding a fragrant balsamic substance). yelvety-canescent and strongly 

 3-ribbed beneath, 23 inches long, on petioles, '68 lines long, persis- 

 tent; panicles axillary, thrice compound, elongated, on rather long 

 peduncles; flowers white; styles as long or longer than the stamens. 

 Common in mountainous districts, Brit. Columbia to eastern Oregon 

 and the Rocky Mountains. 



C. laevigatus. C. velutinus var. Itevigattis T. & G. Fl. i, 686. 

 (SMOOTH MOUNT/MS BALM). A large shrub 815 feet high with smooth 

 terete green erect branches: leaves orbicular to elliptical, 24 inches 

 long, subcordate, finely glandular-serrate, dark green and shining 

 above the whole upper surface glandular and exuding a balsamic fra- 

 grant substance, paler but smooth and prominently 3-ribbed beneath, 

 thick-coriaceous, persistent: panicles axillary T "compound, rather small, 

 the peduncles but little if any longer than the leaves: flowers white.' 

 In forests, Vancouver Island to Northern California, near the coast. 



C. Calif ornicus Kell. Proc. Cal. Acad. i. 55. C. intfaerrimns of re- 

 cent authors not of H. & A. Bot. Beech. 329: C. thyrsijlorus var. macro- 

 thyrsus Torr. Bot. Wilkes 263. A slender branching shrub, 210 feet 

 high, young branches more or less angled and pubescent: leaves thin 

 oblong to broaaty lanceolate, 13 inches long, more or less serrulate 

 toward the apex, pubescent with minute appressed hairs, on slender 

 petioles 26 lines long, deciduous: flowers blue to white, fascicled on 

 terminal and axillary peduncles from wood of the present season's 

 growth; bracts ovate, shortly acuminate, 12 lines long- pedicels 

 slender, 46 lines long: styles shorter than the stamens united to near 

 the summit. On dry open hillsides, from the Columbia river to Cali- 

 fornia. 



C. thyrsiflorus Esch. Mem. St. Petersb. Acad x 285 An erert 

 shrub or small tree 6-15 feet high with strongly angled branches- leaves 

 lanceolate, finely dentate, 1-2 inches long, on short petioles, decicuoiis 

 flowers blue in dense subcompound racemes, terminating the usual v 

 ^ leafy peduncle ' Pl ^ et So " n <l to California! 



-- H- Erect shrubs, the branches usually rigid and-spinose- 

 leaves rather small: flowers in simple racemes or clusters. 



C. divaricatus Nutt. T. & G. Fl. i, 266. A straggling shrub with 

 terete often pruinose branches: leaves oblong-ovate to ovate 4-15 

 lines long, rounded at base, lucid, somewhat obtuse minutelv ind 

 glandularly serrulate pubescent beneath, somewhat cSceous on 

 petioles about 2 lines long, persistent: flowers blue to white in sub 

 simple often elongated racemes ]-4 inches long. Southern Idaho to 



