EVENING PRIMROSE FAMILY 595 



13. 0. micrantha Hornem. Field Sun-cup. Stems 1 to several from the base, 

 procumbent or diffuse, 8 to 24 inches long ; herbage thinly hirsutulous or strigu- 

 lose; leaf -blades ovate- to narrow-lanceolate, slightly undulate, more or less den- 

 ticulate, 1 to 31/2 inches long, the upper mostly sessile, the lower narrowed to a 

 petiole; calyx-tube % to 1 line long; petals entire or emarginate, 1 to 2 lines long; 

 capsules sharply 4-angled, contorted, often coiled into a single spiral, slightly 

 attenuate upwards, sparsely hirsutulous, I/2 to 1 inch long. 



Sandy hills and fields, 5 to 2500 feet : San Francisco and Contra Costa Cos. to 

 San Luis Obispo Co.; coastal Southern California. South to Lower California. 

 Mar.-June. 



Locs. — South Coast Eanges: Antioch, Chesnut 4" Drew; Lands End, San Francisco, Davy; 

 San Pedro, San Mateo Co., Elmer 4813; Corralitos, Santa Cruz Co., M. S. Baker; Pajaro Hills, 

 Monterey Co., Chandler 386 ; Carmel Kiver, near Carmel, Jepson 14,485 ; Bear Valley, San Benito 

 Co., Jepson 12,246; San Miguelito Eancho, near Jolon, Jepson 1646; Arroyo Grande, Alice King; 

 Cuyama Valley, se. San Luis Obispo Co., Jepson 12,159. Coastal S. Cal. : Purisima Hills, n. 

 Santa Barbara Co., Jepson 11,922 ; Sycamore Caiion, Santa Inez Mts., Jepson 9160 ; Los Alisos 

 Canon, Santa Monica Mts., Epling ; Tujunga Canon, San Gabriel Mts., Peirson 414; Fallbrook, 

 Jones; Mt. Soledad, w. San Diego Co., Newlon 316. 



Var. ignota Jepson. Stems usually simple, erect ; herbage pubescent to subglabrous ; leaves 

 usually sparser; petals 1% to 3^/^ lines long; capsules purplish. — Valley mesas and mountain 

 slopes, 1300 to 5200 feet: southern Sierra Nevada from Madera Co. to Kern Co.; interior of 

 coastal Southern California. South to Lower California. Apr.-June. 



Locs. — Sierra Nevada: Friant (Pollasky), Madera Co., Heller 8166; Tehipite Valley, Hall 

 4- Chandler 508. S. Cal. : Saugus, Munz 10,013 ; Slover Mt., Colton, Parish 73 ; Eiverside, Jepson 

 1219; Moro Hills, Fallbrook, San Diego Co., Abrams 3326; Buckman Sprs., San Diego Co., Mum 

 9638. 



Var. exfollata Munz. Leaf-blades linear to lanceolate, narrowed at base to a petiole, 

 usually entire, gray with a close short pubescence, 1 to 3% (or 6) inches long; upper leaves often 

 sessile; petals 1% to 3 lines long. — Sandy washes, deserts or desert borders, 500 to 3300 feet: 

 Mohave Desert ; Colorado Desert. East to Arizona. Apr.-May. 



Locs. — Mohave Desert : Providence Mts., Munz 4" Harwood 3442 ; Manzana, Antelope Valley, 

 Davy 2506. Colorado Desert: Smith Water Canon, Little San Bernardino Mts., Mum 5223; 

 Point of Rocks, Whitewater Wash, Schellenger; Palm Sprs. of San Jacinto, Parish 20,022 ; Coyote 

 Canon, sw. of Santa Eosa Mts., Hall 2791; San Felipe Creek, e. San Diego Co., T. Brandegee; 

 Vallecito, e. San Diego Co., Jepson 8592. 



Var. jonesii Munz. Stems flowering from the base or near it, thinly hispid-hirsute; leaf- 

 blades oblong-ovate, often subcordate at the sessile base, crenately toothed, crisped, 6 to 12 lines 

 long, the basal oblong or oblong-spatulate, narrowed to a petiole, 1 to 2% inches long. — Washes, 

 exposed slopes and chaparral burns, 300 to 5000 feet: Coast Eanges from Mendocino and Lake 

 Cos. to San Luis Obispo Co.; Sierra Nevada from Amador Co. to Kern Co.; coastal Southern 

 California. East to Nevada, south to Lower California. 



Locs. — Coast Eanges: South Mill Creek, Ukiah, Jepson 9252; Blue Lakes, Lake Co., Jepson 

 14,483; Knoxville, ne. Napa Co., Jepson; Vaca Mts., Jepson 14,482; Mt. Diablo, Jepson 9520; 

 San Miguel, San Luis Obispo Co., E. P. Unangst. Sierra Nevada : Drytown, Amador Co., Hansen 

 543; Cosumne Eiver, Rattan; Gwin Mine, Calaveras Co., Jepson 1798; South Fork Bridge, 

 Tuolumne Co., A. E. Grant 843 ; Greeley Hill, CoultervUle, Jepson 14,481 ; Maple Creek, Tulare 

 Co., W. Fry 388. Coastal S. Cal. : Sycamore Canon, Santa Inez Mts., Jepson 9132 ; San Gabriel 

 Canon, San Gabriel Mts., C. E. Hutchinson; Henniger Flats, San Gabriel Mts., Peirson 128; 

 Cajon Canon, Munz 11,054; Jurupa Hills, Eiverside, C. M. Wilder 91; Glen Ivy trail to Santiago 

 Peak, Santa Ana Mts., Munz 7064 ; San Diego, Mary Spencer 109. 



Eefs. — Oenothera micrantha Hornem. Hort. Hafn. Supplem. (1819), type from Cal.; 

 Spr. Syst. Veg. 2:228 (1825) ; Jepson, Fl. W. Mid. Cal. 337 (1901), ed. 2, 283 (1911), Man. 684 

 (1925). Sphaerostigma micranthumVfa\^.'Re^.2:'n (1843). Holostigma micranthum Q^&oh., 

 Nouv. Ann. Mus. Par. 4:335 (1835). 0. hirta Link, Enum. 1:378 (1821), type from Cal.; not 

 O. hirta L. (1760). Sphaerostigma hirtum F. & M. Ind. Sem. Hort. Petrop. 2:22 (1835). Var. 

 IGNOTA Jepson, Man. 684 (1925), tvpe loc. Jurupa Hills, Eiverside, Wilder 90. 0. hirta var. 

 ignota Munz, Bot. Gaz. 85:263 (1928). Sphaerostigma bistortum var. reedii Parish, Muhl. 3:60 

 (1907), type loc. San Bernardino Mts., Seed. 0. micrantha var. reedii Jepson, Man. 684 (1925). 

 0. cheiranthifolia var. reedii Parish; Levi. Monog. Onoth. 449 (1913), type loc. San Bernardino 

 Mts., Beed 4- Parish. 0. hirta var. jonesii f. reedii Munz, Bot. Gaz. 85:263 (1928). Sphaero- 

 stigma hirtellum var. montanum Dav. Muhl. 3 :108 (1907). Var. exfoliata Munz, Am. Jour. Bot. 

 19:778 (1932). Sphaerostigma micranthum var. exfoliatum Nels. Bot. Gaz. 40:59 (1905), type 

 loc. Colorado Desert, Orcutt. 0. hirta var. exfoliata Munz, Bot. Gaz. 85:264 (1928). Sphae- 

 rostigma pallidum Abrams, Bull. Torr. Club 32:539 (1905), type loc. Cabezon, Abrams 3228; not 



