410 KHAMNACE^. Ceanothus. 



tlie lateral nerves and then abruptly cuneate, obtuse to mostly acute or somewhat acuminate, 

 paler beneath, dull, sparingly pubescent to dingy-tomentose, finely and irregularly serrate, 

 1^ to 3 inches long; their pubescent or glabrate petioles 3 to 6 lines long: flower-clusters 

 from several of the upper axils as well as terminal ; the long ascending peduncles naked or 

 1-2-leaved above, somewhat tliyrsoidly branched : capsules globose, little lobed, somewhat 

 roughened and crested. — Spec. i. 195; Lam. 111. t. 129, f. 1 ; Schk. Handb. i. 152, t. 46; 

 Sims, Bot. Mag. t. 1479; Nouv. Duham. vi. t. 31 ; Torr. & Gray, Fl. i. 264; Gray, Gen. 111. 

 ii. 182, t. 169; Wats. Proc. Am. Acad. x. 333; Trelease, 1. c. 108; Parry, 1. c. 168; K. 

 Brandegee, 1. c. 179. C. trinervus, Mcench, Meth. 651. C. tardijlorus, Hornem. Hort. Hafn. 

 230. C. perennis, Pursh, Fl. i. 167. C. herbaceus, Raf. Med. Rep. hex. 2, v. 360. C. offici- 

 nalis, Raf. Med. Bot. ii. 205. — Canada to the Great Lakes, S. Carolina, Louisiana, and 

 Texas. The western form commonly with firmer more tomentose leaves and more up- 

 riglit peduncles, and in some specimens scarcely separable from the preceding variety. The 

 lowermost leaves are frequently elliptical and more coarsely toothed than the upper. 



Var. intermedius, Trelease, n. comb. Low shrub with slender branches: leaves 

 ovate to ovate-lanceolate, mostly less than an inch long, short-petioled : peduncles very 

 slender, mostly numerous ; the small often subsimple inflorescence at their ends : otherwise 

 as in the type.— C. intermedins, Pursh, Fl. i. 167. — Tennessee (ace. to Pursh) and S. Caro- 

 lina, Goose Creek, Hexamer & Maier, to Louisiana, New Orleans, Drummond, no. 73, and 

 Florida. 

 C. serpyllif olius, Nutt. Low decumbent shrub, with reddish finely puberulent twigs . 

 leaves elliptic-ovate, crenate-serrulate, coarsely appressed-hairy on the veins, 3 or 4 lines 

 long and 1 to 3 lines wide : peduncles elongated, naked except at base of the few-flowered 

 corymb. — Gen. i. 154; Torr. & Gray, Fl. i. 266; Chapm. Fl. 74; Wats. Proc. Am. Acad. 

 X. 335 ; Trelease, 1. c. 108 ; Parry, 1. c. 172. C. microphyllus, var. serpyllifolius, Wood, Class- 

 Book, ed. of 1861, 291. C. microphyllus, K. Brandegee, 1. c. 180, in part. — S. Florida, 

 Nuttall. Closely allied to C. Americanus, var. intermedius, from which it differs chiefly 

 in size. 

 -1— 2. Leaves very small (1 or 2 lines long), 3-nerved, fluely glandular-toothed: twigs 



terete, slender, neither rigidly divaricate nor spinose : inflorescence small, nearly simple, 



corymbose or subracemose, terminal and usually sessile on many of the branches ; flowers 



white : fruit about 2 lines in diameter. 

 C. microphallus, Michx. Low spreading shrub, with green or at length reddish nearly 

 glabrous branches and numerous ascending very slender twigs: leaves minute, often fas- 

 cicled, obovate or elliptical, sparsely and fugaciously short-strigose below, very short-peti- 

 oled : peduncles not over 4 lines long, often leafy throughout or at the very top, the corymb 

 half inch in diameter: capsules little lobed, smooth and crestless. — Fl. i. 154 ; Nutt. Gen. 

 1. 154; Torr. & Gray, Fl. i. 266; Chapm. Fl. 74; Wats. Proc. Am. Acad. x. 335; Trelease, 

 1. c. 107 ; Parry, 1. c. 172; K. Brandegee, 1. c. 180. — Florida, mainly in sandy barrens. 

 -1— 3. Leaves ample, firm, 3-nerved, closely dentate-serrate : twigs slightly angled or terete, 



neither glaucous nor spinose : inflorescence ample, compound. 

 C. velutinus, Dougl. Large shrub : twigs olive, buff, or at length brown, puberulent, 

 terete: leaves broadly elliptical, mostly subcordate to the lateral nerves near the base, 

 thence cuneate, very obtuse, dark green, glabrous and usually heavily varnished above, 

 minutely canescent beneath, 2 or 3 inches long ; their stout petioles often 8 lines long : 

 peduncles somewhat angled, minutely and rather sparingly puberulent : flower.s white : 

 capsules subglobose, 2 to 2| lines in diameter, deeply lobed at top, smooth or minutely 

 roughened, nearly crestless. — Dougl. in Hook. Fl. Bor.-Am. i. 125, t. 45; Hook. Bot. Mag. 

 t. 5165; Torr. &"Gray, Fl. i. 265; Wats. 1. c. 334; Trelease, 1. c. 110; Parry, 1. c. 169; K. 

 Brandegee, 1. c. 189. — Mountains from the Columl)ia River to Central California, Nevada, 

 Colorado, and the Dakotas. Strongly cinnamon-scented. 



Var. laevigatus, Torr. & Gray. Subarborescent : leaves glabrous, light green and 

 somewhat glaucous below : inflorescence mostly more ample and compound : capsules glo- 

 bose, 3 lines in diameter, less lobed, smooth, somewhat crested. — Fl. i. 686 ; Wats. Bibl. 

 Index, 167; Trelease, 1. c. 110. C. Icevigaius, Dougl. in Hook. Fl. Bor.-Am. i. 125; Davy, 

 Gard. Chron. ser. 3, xx. 363. — Mountains of California, Mendocino Co., Kellogg, Napa 

 Co., Brandegee, Humlioldt Co., Rattan. 



