608 ONAQRACEAE 



Hill, Plumas Co., B. M. Austin; Hot Springs Valley, Lassen Peak, Jcpson 12,293; Goose Valley, 

 Shasta Co., Jiakcr rf- Kuttiitfl. North Coast Ranges: Snow Mt., Lake Co., T. Brandcgee; Soldier 

 Ridge, near South Yollo Bolly, Jcpson 14,433; South Fork Mt., Humboldt Co., Chesnut 4" Drew; 

 Van Duzen River valley, opposite Buck Mt., Tracy 2688. 



Refs. — Gayoi'HYTUM humile Jusa. Ann. Sci. Nat. scr. 1, 25:18, pi. 4 (1832), type from 

 Chile, Gai/; Jcpson, Man. 689 (1925). G. pumilum Wats. Proc. Am. Acad. 18:193 (1883), type 

 loc. Lake" Co., Torrci/ 97; Trel. Rep. Mo. Hot. Gard. 5:114, pi. 22 (1894) ; Jepson, Fl. W. Mid. 

 Cal. ed. 2,284 (1911). 



10. GAURA L. Butterfly Weed. 



Herbs with alternate leaves. Flowers white or pink, tumin*? red, borne in 

 spikes or racemes. Calyx-tube narrow-clavate or narrow-obconic, the whole flower 

 above the ovarj' deciduous. Calyx-lobes 4. Petals 4, entire, with claws. Stamens 

 8. Ovary 4-celled; ovules 1 in each cell; style long. Fruit nut-like, obovoid, in- 

 dehiscent or splitting at apex, 1 or 2-seeded. — Species 21, North America. (Greek 

 gauros, proud, some of the species with primly erect flowers.) 



Anthers all perfect; filaments with a scale-like appendage at base; stigma 4-lobed; perennial 



1. G. coccinea. 



Anthers attached at the base, those opposite the petals sterile; filaments without appendages; 



stigma entire; annual 2. G. heterandra. 



1. G. coccinea Pursh. Stems erect, several or many from the base, forming a 

 bushy plant 8 to 12 inches high; herbage canescent; leaf-blades linear, remotely 

 denticulate or entire, sessile, V2 to 1 inch long; flow'ers in dense terminal spikes; 

 anthers linear, attached a little above the base; petals red, turning scarlet, 3 lines 

 long; fruits short-ovate, strongly 4-angled, abruptly contracted to a cylindric 

 base, pubescent, 2 lines long. 



Dry slopes, 2500 to 5000 feet : eastern Mohave Desert. North to Manitoba, east 

 to Texas, south to Mexico. May-July. 



Logs. — Providence Mts., T. Brandegee ; Barnwell, New York Mts., K. Brandegee; Clark 

 Mt., Ivanpah Mts., Mary Beal. 



Refs. — Gaura coccinea Pursh, FL 733 (1814), "upper Louisiana", i.e. on the Missouri Elver, 

 Bradbury; Jepson, Man. 689 (1925). G. parviflora Torr. Ann. Lye. N. Y. 2:201 (1828). 



Gaura sinuata Nutt.; Ser. in DC. Prod. 3:44 (1828), type loc. Arkansas and Red rivers, 

 Nuttall. Herbage glabrous; stamens surpassing the petals; petals oblong-ovate, clawed, 3^/4 

 lines long; fruit 4-angled, tapering to base and apex, glabrous, 3 lines long. — Kansas to Texas 

 and Mexico; introduced locally as a weed at Ventura, Pasadena and Carlsbad, but doubtfully 

 persistent. 



2. G. heterandra Torr. Stems erect, branching, 1 to l^^ feet high; herbage 

 minutel}' ])uberulent; leaf-blades oblong to lanceolate, 1 to 1^^ inches long, on 

 slender petioles; petals pink, 1^/2 to 2 lines long, the limb oval, the claw almost as 

 long; stamens alternate petals with the ovate-cordate anthers basally attached, 

 those opposite with lanceolate sterile anthers ; fruits 1^4 lines long. 



Shaded rocky slopes, 1250 to 4000 (or 7000) feet: Trinity Co.; Sierra Nevada 

 from Placer Co. to Kern Co.; Tehachapi Mts. to the San Bernardino Mts. (June- 

 July. 



Locs. — Trinity Co.: Rush Creek, E. S. Yates 410. Sierra Nevada: Placer Co. (Bot. Cal. 

 1:234); Irishtown, Amador Co., Hansen 530; Mokelumne Hill, Calaveras Co., Greene; Yankee 

 HUl, Tuolumne Co., A. L. Grant 1223; Mt. Bullion, Bear Valley, Mariposa Co., Bolander 4941; 

 Hites Cove, Mariposa Co., Congdon; Piedra, Fresno Co., H. P. Kelley; Cedar Creek, North Fork 

 Kaweah River, Jepson 590; Middle Tule River, Purpus 5587; Piute Peak, Kern Co., Purpus 

 5055. Tehachapi Mts.: Tehachapi Peak, Dudley 366; Old Fort Tejon, Kern Co., Hall 6287. 

 S. Cal. : Liebre Mts., Los Angeles Co., Peirson; Jobs Peak, San Bernardino Mts., Parish 2371. 



Refs. — Gaura heterandra Torr. Pac. R. Rep. 4:87 (1857), type loc. river banks, Mokelumne 

 Hill, Bigelow; Jepson, Man. 690 (1925). Heterogaura calif orniea Rothr. Proc. Am. Acad. 6:354 

 (1864), a renaming (privileged under the "Kew Rule") of Gaura heterandra Torr. H. heter- 

 andra Cov. Contrib. U. S. Nat. Herb. 4:106 (1893). 



