180 ROSACEAE 



Eefs. — POTENTILLA SIBBAIJ)II Hal. f . ; Ser. Mus. Helv. 1:51 (1818). Sibbaldia procumbens 

 L. Sp. PI. 284 (1753), type from Europe; Rydb. Mem. Dept. Bot. Columbia Univ. 2:185, pi. 100, 

 figs. 1-5 (1898). P. procumbens Clairv. Man. 166 (1811); Jcpson, Man. 485 (1925); not P. 

 procumbens Sibth. (1794). 



V. Subgenus Eupotentilla. Leaves pinnate or palmate; calyx-tube usually saucer- 

 shaped; petals yellow, rarely whitish or cream-color; stamens (10 or) 15 to 25; 

 filaments filiform; style usually terminal or nearly so; achenes glabrous, 

 usually many. 



5. P. glandulosa Lindl. Sticky Cinquefoil. Stems erect, often reddish, 1 to 

 4 feet high; herbage pubescent, the stems and petioles glandular; leaves pinnate, 

 the basal 4 to 8 or even 15 inches long; leaflets 5 to 7 (or 9), or those of the upper- 

 most leaves 3, roundish-ovate, or obovate with cuneate base, 1 to 3 inches long; 

 cymes lax, leafy-bracted, few-flowered; flowers 4 to 7 lines wide; calyx-tube saucer- 

 shaped, 2 to 21/4 (or in fruit 3) lines wide; petals pale yellow or sometimes pale 

 cream, obovate, rounded at apex, or orbicular, scarcely equaling the sepals; sepals 

 ovate-oblong to lanceolate, acute or acuminate; stamens 25; pistils many, the styles 

 spindle-shaped. 



Half -shaded slopes, 250 to 3000 feet : outer and middle North Coast Ranges 

 from Humboldt Co. to Santa Clara Co.; Sierra Nevada from Shasta Co. to Fresno 

 Co.; cismontane Southern California. East to South Dakota and New Mexico. 

 Apr.-May. 



Locs. — Hupa, Humboldt Co., Manning; Potter Valley, Mendocino Co., Nettie Purpus; 

 Yountville, Napa "Valley, Jepson 127p; Berkeley Hills, Jepson 129p; Los Gatos, Heller 7329. 

 Sierra Nevada (less typical than the coastal plants) : Eedding, Shasta Co., Seller 7904; Forest 

 Eanch, Butte Co., Heller 11,411 ; Auburn, Shockley ; Phoenix Lake, Tuolumne Co., A. L. Grant 40; 

 Chowchilla Mts., Fresno Co., F. P. McLean. S. Cal. (most plants intermediate toward var. re- 

 flexa) : San Bernardino foothills, Parish; Cootca, Palomar Mt., Jepson 1511; Cuyamaca Lake, 

 Mum 9755. 



Var. •wrangelliana Wolf. Stems very rank, usually very glandular, much and widely 

 branched, 3 to 4 feet high ; basal leaves 6 to 17 inches long ; calyx -lobes broadly elliptical or oval, 

 obtuse, mucronate, often rather thin and reticulate ; flowers usually 3 to 4 lines wide. — Dry banks 

 or wooded slopes, 100 to 4700 feet: Coast Ranges from Mendocino Co. to Monterey Co.; Sierra 

 Nevada from Placer Co. to Tulare Co. ; cismontane Southern California. Apr.-June. 



Locs. — Ft. Bragg, W. C. Mathews 108; Bennett Sprs., w. Glenn Co., Heller 11,543; Ft. 

 Boss, Sonoma Co., Heller 6598 ; Gates Canon, Vaca Mts., Jepson 131p ; upper Marsh Creek, Mt. 

 Diablo, Jepson 9995; Woodla-\\Ti, San Mateo Co., Crum 707; Eva sta., Santa Cruz Mts., Jepson 

 125p; Greninger Creek, Gilroy, Jepson 9687 (less robust and glandular, intermediate toward the 

 species) ; Pt. Lobos, Carmel River, E. Ferguson 313. Sierra Nevada (plants not typical, varying 

 toward var. reflexa, var. incisa or var. nevadensis ; in general less glandular than the coastal 

 form) : Deer Park, Placer Co., Helen Geis 31 ; Fallen Leaf Lake, Eldorado Co., M. S. Balcer ; Giant 

 Forest, K. Brandegee. S. Cal.: San Miguelito Canon, Lompoc, Mum 10,252; Canon Diablo, San 

 Bernardino Mts., Parish 11,902 ; Fallbrook, San Diego Co., Cleveland. 



Var. reflexa Greene. Stems slender ; leaflets commonly simply serrate ; cymes open, usually 

 not leafy, the branches and pedicels more or less elongated ; calyx -lobes usually ovate ; petals and 

 calyx -lobes usually reflexed in anthesis ; petals yellow. — Moist soil, open flats, canons, pine slopes 

 or along Avatercourses, usually from 4000 to 9500 feet: Humboldt Co. to Mendocino Co.; Sierra 

 Nevada from Siskiyou Co. to Tulare Co.; Mt. Pinos region to the Laguna Mts., Southern Cali- 

 fornia. May-Aug. 



Locs. — Coast Ranges (leaflets tending toward the doubly serrate condition) : Nature's Rest, 

 Klamath River, Humboldt Co., Chandler 1425 ; Musser Hill, Trinity Co., Yates 355 ; Round Valley, 

 Mendocino Co., Goddard 624. Sierra Nevada: Medicine Lake (mt. w.), e. Siskiyou Co., M. S. 

 BaJcer; Eagle Peak ridge, Warner Mts., e. Modoc Co., L. S. Smith 1036; Lassen Peak, B. M. 

 Austin 387; Bear Valley, Nevada Co., Jepson 114p; Mt. Tallac, Jepson 8148; Coav Creek, Tuol- 

 umne Co., A. L. Grant 70; Lake Merced, Merced River, Jepson 3210; Yosemite, Jepson 4253; 

 Fresno Flats, Madera Co., Jepson 12,842; Little Kern River, Tulare Co., Jepson 4918. S. Cal.: 

 North Fork, Mt. Pinos, Hall 6464 ; Icehouse Canon, upper San Antonio Canon, Peirson 81 ; Snow 

 Canon, San Bernardino Mts., Parish 5060; Strawberry Valley, San Jacinto Mts., Hall 2204; 

 Palomar Mt., Parish 4406 ; Mesa Grande, San Diego Co., F. Ferguson 64. 



Var. nevadensis Wats. Plants slender, scarcely or not at all glandular; leaflets usually 

 simply serrate ; cyme open, the branches and pedicels slender, elongate ; sepals usually lanceolate 



