BUCKTHORN FAMILY 467 



City, Jepson 112,1; Summit sta., Nevada Co., Jepson 14,013; Sierraville, Jepson; Martin Sprs., 

 Eagle Lake, Brown 4" Wieslander 83 ; Manzanita Lake, Lassen Peak, Jepson 15,297 ; Eagle Peak, 

 Warner Mts., Jepson; Goosenest Mt., e. Siskiyou Co., Butler 904. North Coast Eanges: Trinity 

 Summit, Jepson; Salmon Summit, Jepson; Sisson, Loremen; Log Lake, Shackelford Creek, w. 

 Siskiyou Co., Butler 412 ; Marble Mt., Jepson. 



Var. lorenzenii Jepson. Leaf-blades smaller (1 to ly^ inches long), thinner, less varnished 

 above; panicles smaller. — Sierra Nevada: upper Kern Eiver; Fallen Leaf, Eldorado Co., Ottley 

 921; Martin Sprs., Eagle Lake, Brown Sr Wieslander ; Sisson, Loremen. 



Var. laevigatas T. & G. Six to 18 feet high; leaf -veins beneath glabrous. — North Coast 

 Ranges: Corte Madera, Marin Co., ace. Mason; Mt. Vision, Pt. Eeyes peninsula, Jepson; Mt. St. 

 Helena, Jepson 14,012; Sherwood Valley, Mendocino Co., Jepson; Noyo Eiver, Charlotte MoaTc; 

 betw. Kenny and Usal, nw, Mendocino Co., Jepson 2152 ; Bear Buttes, Humboldt Co., Harry A. 

 Button; Fruitland, Humboldt Co., Jepson 16,382; betw. Acorn and Green Pt. ranch, n. Hum- 

 boldt Co., Jepson 1949 ; Gasquet, Del Norte Co., M. S. Baher 317. 



Eefs. — Ceanothus velutinus Dougl. ; Hook. Fl. Bor. Am. 1:125, t. 45 (1830), first col- 

 lected by Douglas at the Kettle Falls of the Columbia and subalpine parts of the neighboring 

 Eocky Mts.; Jepson, Fl. W. Mid. Cal. 255 (1901), ed. 2, 253 (1911), Man. 619 (1925). Var. 

 LORENZENII Jepson, Man. 619 (1925), type loc. Junction Mdw., Kern Canon, Jepson 5021. Var. 

 LAEVIGATUS T. & G. Fl. 1:686 (1840); Jepson, ll.cc. C. laevigatus Hook. Fl. Bor. Am. 1:125 

 (1830), tj-pe loc. Nootka, Vancouver Isl., Memies, 



11. C. sanguineus Pursh. Oregon Tea-tree. Tall shrub; branchlets red- 

 dish, flexible; leaf -blades broadly ovate, roundish or subeordate at base, 3-ribbed, 

 nearly glabrous, serrate, thin, 1^2 to 2^/2 inches long; panicles on old wood from 

 lateral winter buds, compound, 2 to 4 inches long, commonly on short leafless pe- 

 duncles; flowers white; capsules ll^ to 2 lines broad, crestless. 



Wooded slopes, 3000 to 4000 feet: western Siskiyou Co. North to British 

 Columbia and Idaho. May-June. 



Locs. — Sisson, Heller 8051; Humbug Mt., Butler 1389; Moflfitt Creek, Duncan Dunning. 

 Oregon: Ashland Butte, Jepson 2563. 



Eefs. — Ceanothus sanguineus Pursh, Fl. 167 (1814), type loc. Missouri Eiver near the 

 Eocky Mts., Lewis, but most likely Lolo Creek, Ida. (Contrib. U. S. Nat. Herb, 11:387) ; Jepson, 

 Man. 619 (1925). 



12. C. parvifolius Trel. Cattle Bush. Low flat-topped shrub with slender 

 flexible branches, 2 to 4 feet high; herbage glabrous or nearly so; leaf -blades ob- 

 long, entire, obtusish, % to 1 inch long; panicles simple, cylindric, % to 1 (rarely 

 2) inches long, the peduncles rather shorter, sometimes longer; flowers deep or 

 pale blue; capsules 21^ lines broad, nearly crestless. 



Mountain flats or ridges, 4700 to 7000 feet : Sierra Nevada from Calaveras Co. 

 to Tulare Co. June. 



Locs. — Calaveras Big Trees, HooTcer 4" G^o,y ; Chinquapin, Wawona road, Jepson 8384; 

 Grouse Creek, Yosemite, Jepson 4288; Wawona Pt., Mariposa Big Trees, Jepson 4288a, 5655; 

 Arnold Mdw., Madera Co., A. L. Grant 1380 ; Kelty Mdw., Madera Co., Kennedy ; Cascade, Fresno 

 Co., A. L. Grant 1058; Deer Creek, McKinley Big Trees, ace. Wieslander; Marble Fork Kaweah 

 Eiver, Jepson 647; Kern Canon, Jepson; South Fork Middle Tule Eiver, Jepson 4878. 



This species has been attributed to Lake Co., the inner North Coast Eanges and the Mt. 

 Shasta region, but we have seen no specimens in validation. Such records in part, doubtless in 

 aU, rest on the small-leaved form of C. integerrimus which is characteristic of arid habitats and 

 on the small-leaved form of its var. peduncularis. 



Eefs. — Ceanothus paevifolius Trel. Proc. Cal. Acad. ser. 2, 1:110 (1888) ; Jepson, Man. 

 619, fig. 619 (1925). C. integerrimus var. ? parvifolius Wats. Proc. Am, Acad. 10:334 (1875), 

 type loc. Yosemite region. 



13. C. integerrimus H. & A. Deer Brush. (Fig. 229.) Widely branched 

 shrub, 4 to 12 (or 16) feet high, often of greater breadth; bark yellowish-green; 

 branches slender, often half drooping, ending in pliant green branchlets; leaf- 

 blades ovate or oblong-ovate or rarely oblong, entire, % to 2 (or 3^) inches long, 

 3-nerved from the base, glabrous or minutely pubescent, green above, lighter 

 green below; panicles compound, thyrsoid or pyramidal, sometimes simple, 3 to 

 5 inches long, the leafy or nearly leafless peduncles as long or longer; flowers com- 

 monly white, sometimes pale blue, cream or pink; capsules globose, 2 to 2% lines 



