602 



ONAORACEAE 



closely leafy, 3 to G iiu-lu's lii^li; licrbajjfo jrray with short sprcndiii;^ hairs; leaf- 

 blades linear to lanceolate or oblanceolate, denticulate to subentire, 3 to 8 lines 

 lonjr, sessile or subsessile; calyx-tube 1 line lon«?; petals yellow, ajjing umber, with 

 2 brown or reddish spots near the base, 5 to 7 lines lonj,'; capsules narrowly cylin- 

 dric-clavate. 10 to 12 lines lonjx; j^edicels 2 to 3 lines lonp:. 



Sandy flats, 4500 feet : Walker Pass, sonthern Sierra Nevada. May. 



Ref. — Oenothera keknensis Munz, Am. Jour. Bot. 18:737 (1931), type loc. Freeman 

 Canon, below Walker Pass, Kern Co., Pcirson 8822. 



25. 0. cardiophylla Torr. (Fig. 264.) Stem erect, freely branching, 1 to 

 21/2 feet high, mostly leafy on lower part; herbage villous-pubescent, or the leaves 

 subglabrate; leaf-blades round-ovate, cor- 

 date at ba.se, dentate or denticulate, y^ to 

 2\i inches long, on petioles % to 2V2 inches 

 long; flowers in dense terminal spikes, the 

 spikes nodding at apex; calyx-tube 3 to 4 

 lines long; petals yellow, aging a lively brick 

 red, 3 lines long; capsules strictly erect or 

 ascending, linear, 1 to 1% inches long. 



Desert caiions and gullies, 10 to 2000 

 feet: Inyo Co.; eastern Mohave Desert; Co- 

 lorado Desert. East to Arizona, south to 

 Low'Cr California. Sometimes perennial ace. 

 J. A. Ewan. Mar. -May. 



Locs. — Inyo Co.: Nelson Range, S. TV. Austin; 

 Surprise Canon, Panamint Range, Jepson 7135 ; 

 Hanaupah Canon, Panamint Range, Jepson 7110. 

 Mohave Desert: Newberry Spr., Lenimon. Colorado 

 Desert: Cottonwood Spr., Cottonwood Mts., Jepson 

 12,613; Palm Sprs. of San Jacinto, Parish 4118; 

 Indio Mt., Hall 5822 ; Borrego Sprs., San Diego Co., 

 K. Brandegee ; Calexico, Davy 8003; Carrizo Canon, 

 Imperial Co., Paries. 



Var. splendens Munz & Jtn. Calyx-tube 9 to 

 17 lines long; petals 6 to 7 lines long. — Along the 

 lower Colorado River and west to the Salton Sink : 

 Needles ; Chocolate Mts., L. J. Childs ; Oasis, Salton 

 Sink (Am. Jour. Bot. 15:227); Beal Well, ne. of 

 Niland, /. T. Weeks. The following is intermediate 

 towards the species: Corn Sprs., Chuckwalla Mts., 

 Munz 4" J^ecTc 4785. Dec. -Apr. 



Refs.— Oenothera cardiophylla Torr. Pac. R. Rep. 5:360 (1856), type loc. near Fort 

 Yuma, probably in Cal., Thomas 4" DuBarry ; Jepson, Man. 686 (1925). Chylismia cardiophylla 

 Small, Bull. Torr. Club 23:193 (1896). Var. splendens Munz & Jtn. Bull. Torr. Club 49:354 

 (1922), type loc. Needles, Grinnell. 0. cardiophylla var. longituba Jepson, Man. 686 (1925), 

 tjj>e loc. Needles, Grinnell. 



26. 0. scapoidea T. & G. Stems several from the base, erect or ascending, 6 

 to 14 inches high, with mostly basal leaves; herbage glabrous or nearly so; leaf- 

 blades lyrately pinnatifid, with large terminal ovate to oblong-lanceolate leaflet or 

 segment, and few or several small lateral ones, all denticulate or dentately lobed, 

 purple-veined, % to 6 inches long, on petioles I/2 to nearly as long; flowers in a 

 dense terminal spike coiled at tip, the inflorescence flowering unilaterally; calyx- 

 tube 1 to 2 lines long; petals white (rarely yellow), 2 to 3 lines long; stigma green- 

 ish; capsules linear-oblong, quadrangular, midnerve of the valves rounded, ridge- 

 like, 4 to 10 lines long, on pedicels 2 to 7 (or 9) lines long. 



Sandy desert mesas, stony slopes and plains, -100 to 3000 feet : Colorado and 

 Mohave deserts and north along east side of the Sierra Nevada to Lassen Co. North 

 to Oregon, east to Wj'oming and Arizona, south to Lower California. Dec-Apr. 



Fig. 203. Oenothera kernensis Munz. 

 a, habit, X V2; l>, long. sect, of fl., X 1 ; 

 c, petal, X 214 ; d, capsule, X 1^/^. 



