Ceanothus. RHAMNACE^. 415 



C. dentatus, Torr. & Gray. Rather low densely branched shrub, with gray or red-brown 

 at first very villous-tomeutose slightly verrucose rigid twigs : leaves elliptical, rounded at 

 both ends, or appearing retuse from the infolding of the apex, 2 to 6 lines long, papillate 

 only on and near the margin ; the darker waxen upper surface loosely liairy, lighter and 

 coarsely spreading-hairy beneath : inflorescence subglobose, very tomentose ; the peduncle 

 with reduced leaves : capsules globose or somewhat depressed, 2 lines in diameter, smooth, 

 slightly crested, scarcely lobed. — Fl. i. 268 ; Planch. Fl. Serres, vi. 103, t. 567, f. 2 ;'Morren] 

 Belg. Hort. iii. 101, t. 16, f. 2 ; Torr. Bot. Max. Bound. 46, t. 10 ; Trelease, 1 c. 112, in part • 

 Parry, 1. c. 190; K. Brandegee, 1. c. 202. C.papUhsus, var. dentatus. Parry, 1. c. 170.— 

 California, in the Santa Cruz Coast Range. With very numerous and dense scarcely pe- 

 duncled flower-clusters, it is var. floribundcs, Trelease, n. comb. ; C. florihundus Hook. 

 Bot. Mag. t. 4806, Lem. 111. Hort. vii. t. 238, which has been regarded as a hybrid with C. 

 thyrsiflonis. With nearly round leaves having the veins deeply impressed on the upper sur- 

 face, it is var. impressus, Trelease, n. comb. ; C. impressus, Trelease, Proc. Calif. Acad. Set. 

 ser. 2, i. 112 ; from Sta. Barbara County, Sta. Barbara, Miss Plummer, Sta. Maria, Jared. 



C. papillosus, Torr. & Gray. Habit of the last, with at first densely yellowish villous- 

 tomeutose slightly verrucose twigs : leaves elliptical to narrowly oblong, rounded or slightly 

 cordate at base, from 2 inches to more commonly 1 inch or less long (then short-petioled) ; 

 the dark waxen upper surface slightly villous and irregularly and rather closely glandular- 

 papillate, like the margin ; the paler lower surface loosely and densely villous: inflorescence 

 more oblong, about 1 inch long, very villous, the peduncles of like length : capsules as in the 

 last, rather less than" 2 lines in diameter. — Fl. i. 268; Hook. Ic. t. 272, & Bot. Mag. t. 4815; 

 Planch. Fl. Serres, vi. 103, t. 567, f. 1 ; Paxt. Fl. Card. i. 74, f. 50, & Baines ed. i. 70, f. 

 48 ; Morren, Belg. Hort. iii. 101, t. 16, f. 1 ; Trelease, 1. c. 112 ; Parry, 1. c. 170, excl. vars. 

 C. dentatus, var. papillosus, K. Brandegee, 1. c. 203. — California, Santa Cruz Mts. Too 

 near the last in some forms, but typically very distinct. It appears to hybridize with C. 

 thyrsijlorus. 



•i— 9. Leaves medium-sized, 3-nerved (the lateral nerves sometimes closely marginal and 

 then concealed), finely toothed, more or less revolute; the surface not papillate: inflores- 

 cence ample, forming a compound thyrsus : flowers deep blue : twigs strongly angled, 

 neither rigidly divaricate, spinose, nor pruinose. 



C. Parryi, Trelease. Rather large spreading shrub, with green or red-brown at first 

 loosely and softly tomentose rather abundantly verrucose twigs : leaves elliptical, or the 

 largest occasionally somewhat ovate, rounded at base, obtuse, glabrous above, lighter green 

 and densely cobwebby beneath, half inch to 2 inches long, on short cobwebby petioles : inflo- 

 rescence rather narrow, 3 or 4 inches long ; the few-leaved peduncles of like length : capsules 

 globose, 2 lines in diameter, sometimes sliglitly crested and wrinkled. — Proc. Calif. Acad. 

 Sci. ser. 2, i. 109 ; Parry, 1. c. 170; Davy, Gard. Chron. ser. 3, xx. 363. C. integerrimiis, yax. 

 Parryi, K. Brandegee, 1. c. 183. — California, Napa and Sonoma Counties. Also in herb. 

 Gray, as from Flumboldt Co., Bolander, no. 6572, bis. 



C. thyrsiflorus, Eschs. From a small prostrate shrub in exposed places becoming a small 

 tree with green or at length deep brown nearly glabrous scarcely verrucose twigs : leaves 

 elliptical, acute at base, obtuse, glabrous except for a few appressed rather coarse hairs along 

 the very prominent veins beneath, drying brown, about an inch long, on short hairy petioles : 

 inflorescence mostly about 3 inches long, oblong, at length usually thyrsoid, mostly long- 

 peduncled with leaves subtending one or two of the lower fa.scicles, somewhat loosely hairy 

 to nearly glabrous : flowers varying to white : capsules globose, 2 lines in diameter, smooth, 

 not crested, little lobed. — Mem. Acad. St. Pe'tersb. ser. 6, x. 285 ; Lindl. Bot. Reg. xxx. t. 

 38 ; Nutt. Sylv. ii. 44, t. 57 ; Wats. 1. c. 334; Trelease, 1. c. 108 ; Parry, 1. c. 170; K. Bran- 

 degee, I. c. 191 ; Davy, Gard. Chron. ser. 3, xx. 363, f. 65. C. bicolor, Raf. New Fl. Am, iii. 

 57. ? C. elegans, Lem. 111. Hort. vii. t. 268. — Near the coast, Oregon, Curry Co., Howell, 

 to California, Monterey Bay. Hybridizing with C. dentatus ? (= C. Lobbianus, Hook. Bot. 

 Mag. t. 4810, or by error 4811, Planch. Fl. Serres, x. 125, t. 1016), C. papillosus, C. sore- 

 diatus, C. foliosus, and possibly C. rirjidus ( =C. Veitchianus, Hook. Bot. Mag. t. 5127, 

 known only in cultivation). 



Var. griseus, Trelease, n. var. Leaves more broadly ovate, about an inch long and 



