EVENING PRIMROSE FAMILY 



593 



Eefs. — Oenothera flava Garrett, Spring Flora "Wasatch Reg. ed. 4, 106 (1927). Lavauxia 

 flava Nels. Bull. Torr. Club 31:243 (1904), type loc. Laramie, Wyo., Nelson 219. 0. triloba 

 Jepson, Man. 682 (1925) ; not Nuttall (1821). 



8. 0. tanacetifolia T. & G. Leaves in a basal rosette, these and the sessile 

 flowers crowded on the root-crown; herbage canescent to scantily puberulent; leaf- 

 blades narrow-oblanceolate, irregularly and unequally pinnatifid or pinnately di- 

 vided, ll^ to 4 inches long, on petioles 14 to 2 inches long; calyx-tube 1 to 2 inches 

 long; petals yellow, aging yellowish or pinkish, 5 to 8 lines long; capsules narrow- 

 ovate to broadly lanceolate, quadrangular, 5 

 to 10 lines long; seeds minutely and regularly 

 areolate. 



Valleys and hill slopes, 4200 to 6500 feet : 

 easterly summits or eastern slope of the Sierra 

 Nevada from Nevada Co. to Modoc Co. and 

 eastern Siskiyou Co. North to Washington, 

 east to Nevada and Idaho. June- Aug. 



Locs. — Truekee, Nevada Co., Sonne; Sierra Val- 

 ley, Sierra Co., Lemmon; Beckwith Pass, Jepson 7767 ; 

 Norval Flat (near Westwood Jet.), sw. Lassen Co., 

 C. S. Robinson 38; Eagle Lake, M. S. Baker; Grass- 

 hopper Valley, Lassen Co., Jepson 7998; Madeline 

 plains, Loughridge ; Alturas, L. S. Smith 926; Mt. 

 Bidwell, ne. Modoe Co., Manning 339 ; Medicine Lake, 

 e. Siskiyou Co., M. S. BaJcer 485. 



Refs. — Oenothera tanacetifolia T. & G. Pac. 

 R. Rep. 2:121, pi. 4 (1855), type loc. "higher parts of 

 Sierra Nevada" (probably in Lassen Co.), Snyder; 

 Jepson, Man. 683 (1925). Taraxia tanacetifolia 

 Piper, Contrib. U. S. Nat. Herb. 11:405 (1906). 

 0. nuttallii T. & G. Fl. 1:506 (1840), type loc. "plains 

 in the Rocky Mts. near Blackfoot River", Nuttall; not 

 O. nuttallii Sweet (1830). Taraxia longiflora'Nxitt. ; 

 T. & G. Fl. 1:506 (1840) as synonym; not O. longi- 

 floraL. (1771). 



Fig. 259. Oenothera subacaulis Gar- 

 rett, a, habit, X % ; 6, long. sect, of fl., 

 X %; c, base of plant showing capsules, 

 X % ; d, seed, X 5. 



9. 0. ovata Nutt. Golden Eggs. Leaves 

 in a basal rosette, these and the flowers aris- 

 ing from the crown of the thick root; herbage 

 glabrous or the leaf margins and veins beneath ciliate; leaf -blades oblong to ovate, 

 acute, entire or subentire, 3 to 6 inches long, the under ones of the rosette narrowed 

 at base to rather long petioles; calyx-tube very slender, 3 to 4 inches long, the seg- 

 ments glabrous; petals orbicular, 14 inch long; capsules more or less below the 

 surface of the ground, chartaceous, 1 inch long, tardily dehiscent. 



Open hill slopes or low flats, mostly toward the coast, 100 to 1500 feet : San Luis 

 Obispo Co. to Humboldt Co. North to southwestern Oregon. Feb.-Apr. 



Locs. — Oso Valley, San Luis Obispo Co., Condit; Pacific Grove, Elmer 3510; San Juan, San 

 Benito Co., Jepson 8429; Stanford, Elmer 4626; Millbrae, San Mateo Co., Davy 1018; Mt. 

 Davidson, San Francisco Co., Jepson 10,362; Berkeley, Jepson 14,480; Angel Isl., Brewer 2760; 

 Alto sta., Mt. Tamalpais, Jepson 11,564; Inverness, Jepson; St. Helena, Jepson 9885; Willits, 

 Jepson; Sherwood Valley, Mendocino Co., Jepson; Fortuna, Humboldt Co., Tracy 2433. 



Eefs. — Oenothera ovata Nutt.; T. & G. Fl. 1:507 (1840), type loc. Monterey, Nuttall; 

 Jepson, Fl. W. Mid. Cal. 336 (1901), ed. 2, 282 (1911), Man. 683, fig. 664 (1925). Taraxia ovata 

 Small, Bull. Torr. Club 23:185 (1896). 0. primuloidea Levi. Monog. Onoth. 65 (1902) as to 

 western Cal. plants. 



10. 0. subacaulis Garrett. (Fig. 259.) Leaves in a broad rosette, these and 

 the flowers seated on the root-crown; herbage glabrous or nearly so; leaf -blades 

 lanceolate to narrow-ovate, entire or denticulate, or with 2 or 3 pairs of small sup- 

 plementary lobes at base, 1^/4 to 5 inches long, on petioles % to % as long; calyx- 



