EVENING PRIMROSE FAMILY 



597 



Locs. — S. Sierra Nevada : Maple Creek, Sequoia Park, W. Fry 358 ; South Fork Kern Eiver, 

 Purpus. Tehachapi Mts.: Breckenridge Mt., Bauer 300. San Luis Obispo Co.: San Luis Obispo, 

 Condit. Cismontaue S. Cal. : Simi Valley, Ventura Co., Jepson 8457 ; Santa Monica Canon, Barber 

 100; San Gabriel Canon, San Gabriel Mts., C. E. Hutchinson; Henniger Plats, San Gabriel Mts., 

 Peirson 129; Baldwin Lake, San Bernardino Mts., Munz 10,739; San Bernardino, Jepson 6091; 

 Riverside, Jepson 1210; Vandeventer Plat, Santa Rosa Mts., Jepson 1422; Anaheim plains, 

 Alice King; Ramona, Jepson 8521; Escondido, Carl Meyer 3; Mesa Grande, E. Ferguson 102; 

 San Diego, Dunn. Colorado Desert (west side) : Mason Valley, e. San Diego Co., Jepson 8717. 

 Var. hallii Jepson. Leaves pallid with short appressed hairs. — Conchilla Range (Pinon 

 Well, n. of Indio, Jepson 6006); Conchilla Desert (Indio), (Bot. Gaz. 85:267); San Jacinto 



Mts. (Banning) and s. to Cuyamaca Mts. (Warners 

 Hot Sprs.), (Bot. Gaz. 85:267). 



Refs. — Oenothera bistorta Nutt. ; T. & G. Fl. 

 1:508 (1840), type loc. San Diego, Nuttall; Jepson, 

 Man. 685 (1925). Sphaerostigma bistortum Walp. Rep. 

 2:77 (1843). 0. bistorta var. veitchiana Hook. Bot. 

 Mag. t. 5078 (1858), type loc. San Gabriel, Lobb 416. 

 Sphaerostigma veitchianum Small, Bull. Torr. Club 23 : 

 191 (1896). S. bistortum veitchianum Nels. Bot. Gaz. 

 40:59 (1905). 0. cheiranthifolia f, veitchiana Levi. 

 Monog. Onoth. 217 (1904). 0. veitchiana f. delicatula 

 Levi. I.e. 216 (1904). 0. contorta veitchiana Levi. I.e. 

 241 (1904). 0. spiralis var. linearis Jepson, Man. 684 

 (1925), type loc. Sunnyside, San Diego Co., Hall 3908. 

 Var. haUjII Jepson, Man. 685 (1925). Sphaerostigma 

 hallii Dav. Muhl. 3:107 (1907), type loc. Banning, 

 Riverside Co., Hall 446. 



16. 0. dentata Cav. Mohave Sun-cup. 

 Stems diffusely branched from the base, 3 to 9 

 inches high; herbage glabrous or puberulent; 

 leaf-blades linear, mostly tapering to both 

 ends, denticulate, ^4 to 1% inches long, often 

 with smaller leaves fascicled in the axils ; calyx- 

 tube 1 to 2 lines long; petals yellow, changing 

 to dull red, round-obovate, 2 to 3 lines long; 

 anthers versatile; capsules filiform-linear, ar- 

 cuate-recurved, 7 to 12 lines long. 

 Sandy hill slopes, plains, washes and mesas, 500 to 6700 feet : coastal Southern 

 California; Mohave Desert; upper San Joaquin Valley (Tulare and Kern Cos.). 

 Chile. Apr.-June. 



Locs. — S. Cal.: San Jacinto, Jepson 1251; San Bernardino, Parish; Little Rock Creek, San 

 Gabriel Mts., Peirson 793; Warrens Well, San Bernardino Co., T. Brandegee ; Kramer, Mohave 

 Desert, Jepson 5320 ; Barstow, Jepson 5420 ; Mt. Pinos, Ventura Co., C. L. Hitchcock 75. Upper 

 San Joaquin Valley: Rose sta., Kern Co., Jepson 12,421; Caliente, Kern Co., Jepson 6761; Terra 

 Bella, Tulare Co. (Bot. Gaz. 85:260). 



Var. campestris Jepson. Stems short-villous at least below; petals 2% to 4 lines long; cap- 

 sules beaked. — Sandy slopes and valleys, 20 to 5000 feet: Coast Ranges from San Luis Obispo 

 Co. to Lake Co.; Great Valley; Sierra Nevada foothills from Kern Co. to Butte Co. Also in 

 Chile ace. Leville. 



Locs. — Coast Ranges: Santa Margarita, Summers; Cholame Creek (upper), se. Monterey 

 Co., Jepson 15,903 ; Santa Cruz Mts., Pendleton 945 ; Lakeport, Lake Co., C. F. BaTcer 3067. San 

 Joaquin Valley: Delano, Kern Co., Bettys; Tipton, Tulare Co., Jepson 11,592; Delhi, Merced Co., 

 Jepson 10,742; betw. Mossdale school and Atlanta, San Joaquin Co., Jepson 14,488; Brentwood, 

 Linda Gehringer. Sierra Nevada: Greenhorn Range, Kern Co., Hall 4' BabcocTc 5037; betw. 

 Pinehurst and Badger, Fresno Co., Newlon 175; Yosemite, Wright 4- Patchett; Knights Ferry, 

 Stanislaus Co., F. W. Bancroft; Oroville, Heller 11,330. 



Var. cruciata Wats. — Petals narrowly obovate to oblong, often emarginate, 2 to 3 lines long. 

 — Sacramento Valley: Oroville (Bot. Gaz. 85:257). 



Var. jolinstonii Munz. Stems glabrate or glandular-pubescent; petals 5 to 7 lines long; 

 capsules not beaked. — Sandy washes, 3000 to 4000 feet: Mohave Desert; upper San Joaquin Val- 

 ley in Kern Co. ; Inyo Co. East to Nevada. 



Locs. — Mohave Desert and bordering mountains: Elizabeth Lake, Los Angeles Co., Hall 

 3066; Lancaster, Epling, Ellison 4" Anderson; Hrnkley, Mohave Desert (Bot. Gaz. 85:259); 



Fig. 260. Oenothera bistorta 

 Nutt. a, habit, X Ve ; 6, fl., XI; c, 

 capsule, X 1. 



