472 



RHAMNACEAE 



posa Co., Jcpson; Kelty, Madera Co., Kcunrily ; Fresno Flats, Jepson 12,836; betw. Dunlap and 

 Millwood, Jepson 2770; Wliipstock Flat, Tulare Co., Jcpson; Cedar Creek, North Fork Kaweah 

 River, Jcpson C03 ; CIourIi Cave. South Fork Kaweah River, W . Fry 393; Middle Tule River, 

 Jepson 1860. Tehaohapi Mts. : Bear Mt., Jcpson 71G7. South Coast Ranges: Cedar Mt., Ala- 

 meda Co., Jcpson 7443; Old TuUy School, Bitterwater Valley, San Benito Co., Jcpson 16,143; 

 Stone Canon, e. Monterey Co., Jcpson 12,035 ; upper San Benito River, s. of Hernandez Valley, 

 Jepson ]5,42S; Priest Valley, Jcpson 2673. S. Cal.: San Gabriel Peak, Pcirson 112; Coldwater 

 Canon, San Antonio Mts., Peirson 2281; Cajon Pass, Jcpson; San Bernardino Mts., Jcpson 5568 

 (Mill Creek Canon), 5600 (Waterman Canon) ; Strawberry Valley, Mt. San Jacinto, Jepson 

 2291, 2203; Saunders Mdw., San Jacinto Mts., C. V. Meyer 130; San Jacinto Canon, Jepson 

 1290; Pala Mission, Jepson 8494; Palomar Mt., Jepson 1529; Warner Pass, e. San Diego Co., 

 Jepson 8531; Banner grade, Cuyamaca Mts., C. V. Meyer 76; Witch Creek, San Diego Co., 

 Alderson 1561; Live Oak Sprs., e. San Diego Co., Jepson 11,834. 



Refs. — Ceaxothus leucodermis Greene, Kcw Bull. 15 (1S95), type from Cal., Lobb 26. 

 C. divaricatus B. & W, Bot. Cal. 1:103 (1876) ; Jepson, Man. 620, fig. 621 (1925) ; not Nutt. 

 (1838). C. divaricatus var. grosse-serratus Torr. Pac. R. Rep. 4*:75 (1857), 

 Bigelow, type loc. not given (leaves large, strongly serrate, acute. — San 

 Gabriel Mts.) ; Jepson, Man. 621 (1925). C. divaricatus var. eglandulosus 

 Gray; Torr. I.e., type loc. mts. near San Gabriel, Bigelow (leaves small, 

 entire, glabrous or nearly, glaucous, flowers white, sometimes blue. — San 

 Gabriel Mts.); Jepson, Man. 621 (1925). C. divaricatus var. laetiflorus 

 Jepson, Man. 620 (1925), type loc. Pala Mission, Jepson 8494. C. spin- 

 osus var. palmcri K. Bdg., Proc. Cal. Acad. ser. 2, 4:185 (1894) ; not C. 

 palmeri Trel. 



17. C. tomentosus Parry. Tone Bush. Shrub 3 to 8 feet 

 high; branclilets long and very slender, with gray or reddish 

 bark, the young shoots rusty-tomentose; leaf -blades ovate to 

 oblong-elliptic, obtuse, thickish but brittle, mostly 6 to 10 lines 

 long (varj^ing from 3 to 14 lines), obtuse, glandular-serrate, 

 above dark green and minutely pubescent, beneath bright white 

 with a close tomentose covering, or velvety, or sometimes rusty, 

 sometimes merely pubescent; petioles 1 to 2 lines long; panicles 

 lateral or terminal, mostly cylindric, % to 1% (or 2) inches 

 long, often interrupted below, borne on peduncles 5 to 10 lines 

 long which often bear 1 or 2 small leaves at base; flowers azure-blue (sometimes 

 nearly white) ; capsules 3-lobed, commonly brownish, 2 lines broad; crests thin or 

 sometimes thickish. 



Hill slopes, 300 to 4500 feet : Sierra Nevada foothills from Placer Co. to Mari- 

 posa Co. May. 



Locs. — Forest Hill, Placer Co., Bolander 4558; betw. Magra and Cape Horn, K. Brandegee ; 

 Placerville, F. B. Herbert; Rock Creek, Eldorado Co., 0. M. Evans; lone, Hansen 804 (fls. blue), 

 805 (fls. white) ; Clinton Peak, Amador Co., Hansen 193; Kinsley, Mariposa Co., Charlotte Hoak; 

 Sherlocks, Mariposa Co., Congdon; Snyder Mt. Mariposa Co., Congdon. 



Var. olivaceus Jepson. Ramona Bush. Shrub 4 to 7 feet high ; leaves olive-green beneath 

 with a very fine and dense whitish felt-like covering or sometimes greenish and sparingly pubes- 

 cent, the blades 3 -nerved beneath (the main nerves with many lateral nerves), the margin glan- 

 dular-denticulate, rarely serrate; peduncles % to 2i/^ inches long; capsules commonly blackish. — 

 Canons and mesas, 200 to 2300 feet: San Bernardino Valley to San Diego Co. Lower California. 



The plants here listed as var, olivaceus from coastal Southern California have passed for 

 long with botanical writers and collectors as Ceanothus tomentosus. The pubescence on the 

 leaves in the true C. tomentosus Parry from the northern Sierra Nevada foothills, a very different 

 region geographically, is obviously and somewhat loosely woolly ; it is a little rusty when young ; 

 and in character distinct from that of the form here called var, olivaceus. This form of Southern 

 California may be even less related to the genuine C. tomentosus than is here indicated. 



Locs. — Edgar Canon, Parish 4103 ; Redlands, Parish 6817 ; Claymine Caiion, Santa Ana Mts., 

 J. T. Howell 2608 ; Clevinger Canon, Ramona, Jepson 8509 ; Escondido, C. V. Meyer 25a (gla- 

 brate form) ; Poway grade. Parish 10,755; Dehesa, T. Brandegee; Dulzura, Wiggins 1790; San 

 Diego, T. Brandegee 823. 



Refs. — Ceanothus tomentosus Parry, Proc. Davenp. Acad. 5:190 (1889), type loc. lone. 

 Parry; Jepson, Man. 621 (1925). C. azureus Kell. Proc. Cal. Acad. 1:55 (1855), type loc. 

 Placerville, E. W. Garvitt; not C. azureus Desf. (1815). C. oliganthus var. tomentosus K. Bdg. 

 Proc. Cal. Acad. ser. 2, 4:198 (1894). Var. olivaceus Jepson, Man. 621 (1925), type loc. Clevin- 



Fig. 233. Ceano- 

 thus LEUCODERMIS 

 Greene ; cross sec- 

 tion of seed coat, 

 X 185. 



