ROSE FAMILY 197 



7^2 inches long, on petioles I/2 to as long; leaflets 15 to 19, thin, cuneate-obovate, 

 once or twice incisely cleft, 4 to 9 lines long; cyme dichotomously forked, the flow- 

 ers solitary or in 3s, 5 lines wide; calyx-tube cup-shaped, 1 to l^/^ or in fruit 2i/^ 

 lines wide; bractlets lanceolate, entire or often 2 or 3-toothed, equaling or exceed- 

 ing the calyx-lobes ; calyx-lobes l^/^ to 2 lines long ; petals white, oblong-oblance- 

 olate or oblanceolate, truncatish at apex, 2 to 3 lines long, commonly erect ; stamens 

 10, 5 short with filiform filaments, the 5 opposite the calyx-lobes with filaments 

 deltoid-dilated at base ; achenes many, smooth or finely striate. 



Moist shady slopes, 2000 to 5000 feet : North Coast Ranges from Humboldt Co. 

 to Napa Co. ; Sierra Nevada from Amador Co. to Fresno Co. May-June. 



Note on relationship. — Potentilla elata Greene is the high altitude and interior aspect of 

 P. californica Greene, so nearly related that its specific status is questionable. The most reliable 

 diagnostic characters are apparently the more delicate habit, less glandular condition, more finely 

 dissected leaflets and smaller calyx-tube. Some forms approach P. californica very closely and 

 are difficult to refer to one species or the other. The form described as Horkelia glandulosa Eastw. 

 is intermediate toward P. californica with respect to its stouter habit and more glandular con- 

 dition. 



Locs. — North Coast Eanges: Grouse Creek, Humboldt Co., Chesnut 4" Drew; North Fork 

 Middle Eel Elver, near Foster Glades, se. Trinity Co., Jepson 104p ; Comptche, Mendocino Co., 

 H. A. WdlTcer 288; Tunis Mill, Elk Mt., n. Lake Co., Jepson 123p; La Jota plateau, Howell Mt., 

 Jepson; Angwrn's Mdw., Howell Mt., Jepson 124p (more robust, approaching P. californica). 

 Sierra Nevada: Volcano, Amador Co., Hansen 264; Confidence, Tuolumne Co. (more robust, 

 approaching P. californica) ; Pine Ridge, Fresno Co., Crum 1286. 



Yar. dissita Crum var. n. Herbage more conspicuously hirsute-pubescent. — (Herbae dense 

 hirsuto-pubescentes.)— Lagrange, Stanislaus Co., Jepson 109p (type); Bower Cave, Mariposa 

 Co., Jepson llOp. 



Refs. — Potentilla elata Greene, Pitt. 1:100 (1887), type loe. shady banks of upper Napa 

 River above Calistoga, Greene; Jepson, Fl. W. Mid. Cal. 283 (1901), ed. 2, 209 (1911), Man. 495 

 (1925). Horlcelia californica B. & W. Bot. Cal. 1:181 (1876) in part. P. californica var. elata 

 Greene, Fl. Fr. 66 (1891), Horlcelia elata Rydb. Bull. Torr. Club 25:54 (1898) ; Mem. Dept. 

 Bot. Columbia Univ. 2:127, pi. 58 (1898). H. glandulosa Eastw. Bull. Torr. Club 32:195 (1905), 

 type loc. Laytonville, Mendocino Co., Easttcood (plant stoutish, glandular, leaflets about 11), 

 (vidityp.). Yar. DISSITA Crum. 



37. P. truncata Jepson. Ramona Honey-dew. Stems few, erect, 8 to 20 

 inches high ; herbage hirsute and glandular ; leaves pinnate, mostly basal, the blades 

 11/2 to 3 inches long; petioles % to 1 inch long; leaflets 5 to 9, obovate-cuneate, 

 truncate at apex, finely dentate, more coarsely and deeply toothed at the apex, 4 

 to 10 lines long, the terminal larger; cymes few-flowered; calyx-tube shallow, 

 saucer-shaped, 2^/2 lines wide; petals white, orbicular, short-clawed, 2^/2 to 3 lines 

 long; filaments opposite the calyx-lobes ovate-triangular, 1/2 line long, the alternate 

 ones broadly oblong, I/4 line long; achenes many. 



Central San Diego Co, South to Lower California, May- June, Rarely col- 

 lected. 



Locs.— Ramona, Chandler 5321; Mesa Grande (Bull. S. Cal. Acad. 24:12). L. Cal.: Guada- 

 lupe Mts. (Bull. S. Cal. Acad. 24:12). 



Refs. — Potentilla truncata Jepson, Man. 495 (Apr. 14, 1925); M, & J, Bull, S. Cal, 

 Acad, 24:12 (May 20," 1925). Horlcelia truncata Rydb. N. Am. Fl. 22:274 (1908), based on a 

 transplant from Ramona, San Diego Co., Chandler 5321. H. californica var. paucifoliolata 

 Wats.; Rydb. Mem. Dept. Bot. Columbia Univ. 2:131 (1898) as synonym. 



38. P. lindleyi Greene. Monterey Honey-dew. Stems erect or ascending, 

 many from the root-crown, 7 to 20 inches high; herbage pubescent, more or less 

 glandular ; leaves pinnate, mostly basal, the blades 3 to 3l^ inches long, the petioles 

 1 (to 2) inches long; leaflets 13 to 25, roundish to cuneate-obovate, sharply toothed 

 above the base, 4 to 7 lines long; cymes corymbose, rather dense or capitately con- 

 gested, many-flowered; flowers 31/2 to 414 lines wide; calyx-tube shallow, l^/^ to 2 

 lines wide, % to 1 line high; bractlets ovate, smaller than the calyx-lobes; petals 

 white, oblong-oblanceolate, obtuse, 2^^ to 3 lines long; stamens 10, the filaments 



