BORAGE FAMILY 373 



3. P. tenellus Gray. Stems 1 to several from the base, slender, commonly erect, 

 simple, or branching only above, arising from a conspicuous basal leaf -rosette, 3 to 

 7 (or 13) inches high, pubescent and often also spreading-hirsute ; leaves ascending- 

 hirsute, those of the basal tuft oblong, % to 1 inch long; cauline leaves few, ovate 

 or ovate-oblong, 2 to 7 lines long ; spikes rather few-flowered, at length 1 to 3 inches 

 long; calyx deeply cleft, rustj'-yellowish, at length pale, sometimes imperfectly 

 cireumscissile, its lobes ovate, abruptly attenuate ; nutlets somewhat ovoid, abruptly 

 constricted and shortly acute at base and apex, 3-keeled dorsally and also trans- 

 versely rugose, % to % line long ; rugae straight, flattish or low- rounded, tubercu- 

 late and interrupted or often smooth, separated by very narrow or hair -like gi'ooves; 

 lateral angles papillate-scabrous ; ventral side of nutlets with the caruncle seated 

 in a transverse central groove or hollow. 



Dry open hills and gravelly flats, 20 to 3500 (or 5000) feet ; throughout cismon- 

 tane California ; also transmontane northeastern California. East to Arizona and 

 Utah, north to British Columbia. Apr. -May. 



Locs. — Cismontane S. Cal. : Santa Ysabel, Cuyamaoa Mts., Jepson 17,144; Warner EancU, 

 e. San Diego Co., Jepson 8528; Strawberry Valley, Mt. San Jacinto, Jepson 1308; Elsinore, sw. 

 Eiverside Co., Jepson 19,141; Reche Caiion, se. of Colton, Parish; Santa Barbara, T. Brandegee. 

 Coast Ranges: Bitterwater Valley, betw. Cholame and Annette, San Luis Obispo Co., Wiggins 

 5809 ; Pacific Grove, Elmer 3513; Los Gates (hills v!.), Heller 7338 ; Corral Hollow, Mt. Hamilton 

 Eange, Jepson 9575; St. Helena, Napa Valley, Jepson 21,148; Ukiah, Bolander 3826; Eedway, 

 near Garberville, Tracy 9863; Phillipsville, South Fork Eel River, Tracy 5469; Beegum, w. Te- 

 hama Co., Jepson 16,632; Berry's ranch, Redwood Creek, n. Humboldt Co., Tracy 10,070; Yreka, 

 Butler 633; Gasquet, Del Norte Co., B. Fan Deventer 88. Tehaehapi Mts.: Rowen, Jepson 6722. 

 Great Valley ; Antioch, K. Brandegee; Rosewood, w. Tehama Co., Jepson 21,149. Sierra Nevada: 

 Poso Mine, Greenhorn Mts., C. N. Smith 294; Kaweah, North Fork Kaweah River, Hopping 251; 

 Little Dry Creek, near Sparkville, Fresno Co., Jepson 15,146 ; Big Sandy Valley, Black Mt., Fresno 

 Co., Hoover 3467 ; North Fork sta., Madera Co., Bacigalupi 2251 ; Bootjack, Mariposa Co., Jepson 

 12,779 ; La Grange, Stanislaus Co., Hoover 1713 ; Avery, Calaveras Co., Tracy 5731 ; Lotus, Eldo- 

 rado Co., Jepson 18,595; Marston sta., Plumas Co., Heller 10,842. Transmontane ne. Cal.: Big 

 Valley near Lookout, Modoe Co., Balcer 4" Nutting ; Little Shasta, e. Siskiyou Co., F. W. Hooper. 



Refs.- — Plagiobothrys tenellus Gray, Proc. Am. Acad. 20:283 (1885) ; Jepson, Fl. W. Mid. 

 Cal. 446 (1901), ed. 2, 348 (1911), Man. 855 (1925). Myosotis tenella Nutt.; Hook., Kew Jour. 

 Bot. 3:295 (1851), type loc. Coeur d'Alene River Valley, Geyer 290. P. asper Greene, Pitt. 3:262 

 (1898), "northern Cal. to Wash." P. parvulus Greene, Pitt. 3:261 (1898), type loc. Castroville, 

 Monterey Co., flicfcmaa. P. <eneH«s var. partiwiws Jtn., Contrib. Gray Herb. 68:72 (1923). P.co- 

 lorans Greene, Pitt. 3:262 (1898), type loc. Hornbrook, Siskiyou Co., T. J. Howell (plants purple- 

 staining). P. tenellus var. colorans Jtn., I.e. 68:73 (1923). P. humifusus Jones, Contrib. W. Bot. 

 13:7 (1910), type loc. Chat, Lassen Co., Jones. P. tenellus va.T. parvulus subvai. humifusus "Brand ; 

 Engler, Pflzr. 4-'^2.x08 (1931). 



4. P. shastensis Greene. Stems erect, one or few from the base, simple or 

 branching above, 5 to 12 inches high ; herbage thinly hirsute ; leaf-blades linear to 

 lanceolate, V2 to IVi inches long ; spikes loose, % to 5 inches long, bract eate through- 

 out ; calyx 2 to 2% lines broad, scarcely longer, cleft to the middle; corolla l^i lines 

 broad, its lobes ascending, I/2 line long; nutlets quadratish-ovate and abruptly 

 short-acute, shining-vitreous, 1 to II/2 lines long, the dorsal side 3-keeled, the inter- 

 vals between the keels shallowly troughed and crowded with transverse very low 

 and flat broad ridges .separated by line-like grooves, these grooves sometimes form- 

 ing a network. 



Hillslopes and gravelly flats in valleys, 100 to 2500 feet : Sierra Nevada foot- 

 hills (and sometimes on the bordering Great Valley plain) from Stanislaus Co. to 

 Butte Co. ; inner Coa.st Range (and sometimes the bordering Great Valley plain) 

 from Merced Co. to Siskiyou Co. North to southern Oregon. An uncommon spe- 

 cies. May. 



Locs. — Sierra Nevada foothills and bordering Great Valley plain: Merced (10 mi. n., in foot- 

 hills), Hoover 2069 ; La Grange, Stanislaus Co., Hoover 1715 ; Linden, San Joaquin Co., Gunnison; 

 lone, Amador Co., T. Brandegee; Oroville (hills n.). Heller 11,267; Chico, Hoover 3244; Seven 

 Mile Creek (4 mi. ne. of Red Bluff), Tehama Co., Jepson 16,365. Inner Coast Range and bordering 

 Great Valley plain: Pacheco Pass, Hoover 4029; Lake Co., Purpus; Sites, Colusa Co., T. Brande- 

 gee; Anderson, Shasta Co., Alice King. 



