592 



ONAGRACEAE 



San Bernardino 



ar Valley, Mum 5678 ; upper Holcomb Valley, Mum 10,636. 

 gcc; Providence Mts., I. Brandegee; Barnwell, New York 



an|.'l('s witli 2 narrow coarsely lootlied wind's, or the angles merely warty; seeds 

 minutely and densely lubei-cled. 



Sandy desert slopes. i)lains and washes, 2000 to 7500 feet 

 Mts. ; Moliave Desert ; north to Inyo Co. and alonj^Mhe east side of the Sierra Nevada 

 to Modoe Co. North to Wasiiinj^ton, east to Montana and New Mexico. May-July. 



Locs. — San Bernardino Mt.s. : Be 

 Mohave Desert: Kramer, K. Brandegee 

 Mts., Jepson 5460 ; Piute Creek, N. 

 C. Wilson. East side of Sierra Ne- 

 vaila: Ilanaup.ili Canon, Panamint 

 Ranjro, Jipson GiW.i; Wild Kose 

 Canon, Panamint Kanjje, Pdri.sh 

 9895; Darwin (n. of), IlaU <^- Chand- 

 ler 7111; Laws, Inyo Co., K. Bran- 

 degee; Truckee Kivcr Canon, K. 

 Brandegee ; Likely, Modoc Co.,Man- 

 ning. 



R<?fs. — Oenothera caespitosa 

 Nutt. Fraser Cat. n. 53 (1813) ; 

 Sims, Bot. Mag. t. 1593 (1814), 

 tvpe loc. "Upper Louisiana", Nut- 

 tall ; Nutt. Gen. 1:245 (1818), type 

 loc. "banks of the Missouri from 

 White River to the Mandans", Nut- 

 tall. 0. marqinata Nutt.; II. & A. 

 Bot. Beech. 342 (1838), type loc. 

 Blue Mts., e. Ore., Tolmie ; T. & G. 

 Fl. 1:500 (1840), "Rocky Mts., in 

 Upper California, about lat. 42°", 

 Nuttall. Pachylophus marginatus 

 Rydb. Bull.Torr. Club 33 : 146 ( 1906) . 

 0. caespitosa var. marqinata Munz, 

 Am. Jour. Bot. 18:733 (1931). P. 

 cylindrocarpus Nels. Bot. Gaz. 47: 

 429 (1909) , type loc. Carsons, Mead- 

 ow Valley Wash, s. Nev., Goodding. 

 Anogra longiflora Hel. Muhl. 2:224 

 ( 1906 ) , type loc. Silver Canon, White 

 Mts., Heiler 8219, a nearly glabrous 

 form. 0. caespitosa var. longiflora 

 Munz, Am. Jour. Bot. 18: 734 (1931). 



7. O.flava Garrett. Leaves 

 and flowers borne in a tuft on 

 the root-crown; herbage gla- 

 brous or subglabrous; leaf- Fig. 

 blades lanceolate in outline, 

 deeply and irregularly pinnat- 



ifid below the entire apical portion, sometimes merely salient-dentate below, some- 

 times more or less bipinnatifid throughout, 3 to 7^ inches long, on petioles % to 

 3 inches long; flowers diurnal; calyx-tube 2 to 4 inches long; petals yellow, aging 

 pinki.sh, 10 to 16 lines long; capsules ovate to broadly oblong, angles winged, sides 

 prominently ribbed and reticulate-veined, 6 to 10 lines long; seeds angled, minutely 

 and densely tuberculate. 



Plateau country, 3400 to 5000 feet : northern Sierra Nevada from Eldorado Co. 

 to Shasta and ]\Iodoc Cos. East to the Rocky Mts., north to Washington, south to 

 Mexico. May-Aug. 



Locs. — Mt. Ralston, Eldorado Co., H. M. Evans; Sierra Valley, Sierra Co., Lemmon; Fall 

 River Sprs., ne. Shasta Co., Hall 4- Babcock 4198; Dixey Mts., Lassen Co., BaJcer ^ Nutting; 

 Bieber Range, Modoc Co., L. S. Smith; Alturas, C. C. Bruce; Forestdale, sw. Modoc Co., M. S. 

 Baker. 



258. Oenothera caespitosa Nutt. a, habit, X V^ ; 

 b, spike of old fruits, X % ; c, capsule, X 1. 



