574 ONAGRACEAE 



Nortli America. (Captain William Clark of tlio Lewis and Clark party, first ex- 

 po(liti(Mi across the Rooky Mountains to the Pacific, 1804-1806.) 

 Stamens S; ciilyx-tubo short, obconical. 

 Potal.s entire. 



Claw very short, inuoh .shorter than limb of ])etal, often toothed 1. C. rhomhoidca. 



Claw about as lonj^ as limb of petal, not toothed 2. C. clctjans. 



Petals l^lobed with a subul.ite tooth in the sinus; claw short, not toothed 3. C. xantiaiia. 



Stamens 4; calyx tube elongated, (iliforin; petals 3-lobcd. 



Petals 3-lobed, the lobes nearly ecjual 4. C. concinna. 



Petals fanshajied and obcordate, a linear or spatulate lobe proceeding from the deep sinus 



and exceeding in length the lateral lobes, which arc several times larger 



5. C. hrcweri. 



1. C. rhomboidea Dou^xh Diamond Clarkia. Stem erect, 1 to 3 feet high, 

 simple or branching; herbage finely puberulent; leaf -blades oblong to ovate, entire, 

 i/o to 2 inches long, on petioles 1 line to 1 inch long; calyx-tube ly^ lines long; 

 calyx-lobes narrowly linear, carinate; petals rose-purple, often purple-dotted to- 

 ward the base, rhomboidal, 3 to 5 lines long, the limb with a short broad often 

 toothed claw; filaments with whitish hairy scales at base, those alternate the petals 

 with longer scales; capsule sessile or very shortly pediceled, commonly somewhat 

 curved, appressed-puberulent, 7 to 12 lines long. 



Cation sides or open forest, 500 to 7000 feet : mountains of coastal Southern 

 California; Coast Ranges from San Luis Obispo Co. to Humboldt Co.; Sierra Ne- 

 vada from Kern Co. to IModoc Co. East to Arizona and South Dakota, north to 

 AVashington. May- July. 



Locs. — S. Cal.: bescanso, San Diego Co., K. Brandegee ; Palomar Mt., Esther Hewlett; 

 Strawberry Valley, I\It. San Jacinto, Hall 2270; Little Bear Valley, San Bernardino Mts., 

 Chandler ;' Ut Markham, San Gabriel Mts., Peirson 21G1; Cuddys, Mt. Pinos, Dudley ^ Lavib 

 4531. Coast Ranges: See Canon, San Luis Obispo Co., Condit ; Stone Canon, Monterey Co., 

 Condit : Kelseyville, Lake Co., Jcpson; Houghs Sprs., ne. Lake Co., Jepson 9019; Potter Valley, 

 Mendocino Co., Nettie Purpus; Browns Mt., Trinity Co., E. S. Yates 394; ridge betw. Van Duzen 

 and Mad rivers, near Low Gap, Tracy 2763; Highland Mine, Siskiyou Co., Butler 926. Sierra 

 Nevada: Piute Peak, Kern Co., Purjms 5298; Giant Forest, Tulare Co., K. Brandegee; Bubbs 

 Creek, Kings River Canon, Newlon 225; Yosemite Valley, Jepson 8359; Lake Eleanor, Tuolumne 

 Co., A. L. Grant 1248; Table Mt., Sonora, A. L. Grant; Snowdon ranch, Calaveras Big Trees, 

 Jepson 14,421; Colfax, Placer Co., L. S. Smith 1629; Nevada City, Sonne; Big Mdws., Plumas 

 Co., Jepson 4059; Eagle Lake, Lassen Co., J. Grinnell ; Mineral, Tehama Co., J. Grinnell; Dana, 

 ne. Shasta Co., Hall tf- Babcock 4169 ; Warner Mts., Modoc Co., Manning 282. 



Refs. — Clarkia rhomboidea Dougl.; Hook. Fl. Bor. Am. 1:214 (1834), type loc. "Great 

 Falls of the Columbia (River) to the Rocky l\Its.", Douglas; Lindl. Bot. Keg. t. 1981 (1837) ; 

 Jepson, Fl. W. Mid. Cal. 331 (1901), ed. 2, 277 (1911), Man. 673, fig. 659 (1925). Oenothera 

 rhomboidea L6vl. Monog. Onoth. 287 (1908), in part. Phaeostoma rhomboidea Nels. Bot. Gaz. 

 52:267 (1911). C. gauroides Dougl.; Sweet, Brit. Fl. Gard. ser. 2, t. 379 (1837). Opsianthes 

 gauroidcs Lilja, Fl. Sverig. Suppl. 25 (1840). Phaeostoma douglasii Spach, Nouv. Ann. Mus. 

 Par. ser. 3, 4:395 (1835), in part. C. virgata Greene, Erythea 3:123 (1895), based upon spms. 

 from Sonoma Co., Bioletti, and Amador Co., Hansen. C. rhomboidea f. virgata Munz & Htck. 

 Bull. Torr. Club 56:191 (1929). Godetia latifolia Nels. & Ken. Proc. Biol. Soc. Wash. 19:156 

 (1906), type loc. Sierra Valley, Sierra Co., Hmmlin. 



2. C. elegans Dougl. Canon Clarkia. (Fig. 254.) Stem erect, simple or 

 branching, 1 to 3 feet high ; herbage glabrous, glaucous, often reddish ; leaf-blades 

 ovate to oblong-ovate, entire or repand-denticulate, 1 to 1% inches long, short- 

 petioled ; calyx-tube 1 to l^/o lines long ; calyx-lobes broadly linear, plane ; petals 

 pink or purple, often with a spot at base of blade, commonly spreading laterally in 

 pairs, 4 to 8 lines long, the limb about equaling the narrow entire claw; filaments 

 with a reddish densely hairy scale at base, most developed opposite the short sta- 

 mens ; anthers of long stamens bright crimson, 3 lines long ; anthers of short stamens 

 commonly white; capsule usually curved, sessile, 7 to 12 lines long, hirsute with 

 spreading hairs. 



Canon sides and chaparral slopes, 200 to 3400 (or 5000) feet: Mendocino Co. 

 to San Luis Obispo Co. ; Sierra Nevada foothills from Shasta Co. to Kern Co. ; south 

 to the San Gabriel Mts. Mar. -July. 



