604 



ONAORACEAE 



Fig. 265. Oenothera multijuga 

 Wats, a, habit, X % ; &, long. sect, 

 of fl., X 1 ; c. capsule, X 1%. 



27. 0. brevipes Gray. Similar to no. 126; stom.s coarser, 4 to 22 inche.s liigh; 

 herbage on lower parts villous; leaf -blades ovate to lanceolate, snbentire or den- 

 ticulate or lyratel.y pinnatifid with few or sev- 

 eral small lateral lobes, 1 to 4 inches long, on 

 petioles 14 to about as long; flowers in spikes, 

 the spikes nodding in the bud; calyx-tube 1 to 

 2 lines long; petals golden-yellow, somewhat 

 quadratish, truncatish or retuse, 2 to 8 lines 

 long; cap.sules 1 to 2% inches long, spreading 

 or refracted, the pedicels stout, commonly 1 

 to 3 (rarely to 8) lines long. 



Desert washes, -100 to 7000 feet : Colorado 

 and Mohave deserts; Inyo Co. East to Arizona 

 and southern Nevada. Dec-May. 



Locsj — Colorado Desert: Niland, Imperial Co. 

 (Am. Jour. Bot. 15:229); betw. Westmoreland and 

 Indio, Newlon 418; Palm Sprs. of Mt. San Jacinto, 

 Gilman; Cottonwood Sprs., n. of Mecca, Jepson 12,609; 

 Dos Palmas Sprs., Kiverside Co., Mum 9950 ; Corn Sprs., 

 Chuckwalla Mts., Mum ^ Keck 4894. Mohave Desert : 

 Calico Wash, ne. of Barstow, Jepson 4815; Ord Mt., 

 Jepson 15,494 ; Newberry, Newlon 500 ; Yermo, Jepson 

 15,869. Inyo Co. : Hanaupah Canon, Panamint Kange, 

 Jepson 6973. 



Eefs. — Oenothera brevipes Gray, Pac. E. Rep. 

 4:87 (1857), type loc. near the Colorado (River), Bige- 

 low; Jepson, Man. 687, fig. G69 (1925). Chylismia 

 Irevipes Small, Bull. Torr. Club 23:194 (1896). 



28. 0. multijuga Wats. (Fig. 265.) Stems 1 or several from the base, nearly 

 naked, widely branched or sometimes simple, % to 2 feet high; herbage thinly vil- 

 lous or subglabrous above ; leaves irregularly 

 pinnate, 2 to 5 (or 8) inches long, the leaflets 

 very unequal, the terminal one usually several 

 times the largest, all more or less petiolulate; 

 sometimes the leaves partially bipinnate, di- 

 vided into 10 to 16 unequal lobes; flowers in 

 very loose racemes; pedicels nodding in the 

 bud, capillary, in fruit 4 to 9 lines long; calyx 

 often reddish ; calyx-tube I/2 to 1 line long ; 

 petals yellow, sometimes drying purplish, 1^2 

 to 3 lines long ; capsules linear, slender, I/2 to 1 

 inch long; pedicels slender or capillary, 3 to 

 6 lines long. 



Caiion floors and washes, 30 to 5700 feet : 

 Inyo Co. East to Utah and Arizona. Annual 

 or biennial. Apr.-May. 



Locs. — Hole-in-Rock Spr., e. of Stovepipe Wells, 

 Death Valley, Mum 4- Hitchcock 11,037; Furnace 

 Creek, Death Valley, Parish 10,045 ; Wild Rose Canon, 

 Panamint Range, Jepson 7131; Inyo, T. Brandegee; 

 Black Canon, White Mts., Buran 2655. 



Refs. — Oenothera multijuga Wats. Am. Nat. 

 7:300 (1873), type from n. Ariz., E. P. Thompson; 

 Proc. Am. Acad. 8:595 (1873), "southern Utah". Chyl- 

 ismia multijuga Small, Bull. Torr. Club 23 : 193 (1896). 

 0. brevipes var. multijuga Jepson, Man. 687 (1925). 

 0. brevipes var. parviflora Wats.; Parry, Am. Nat. 9:271 (1875), type loc. "Valley of the Virgin 

 (River) near St. George, Utah", Parry 74. Chylismia parviflora Rydb. Fl. Rocky Mts., 603, 1064 



Fig. 266. Oenothera heteeo- 

 CHROMA Wats, a, habit, XYg', b, fl., 

 X 2%; c, capsule, X iy2. 



