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CATALOGUE OF SPECIES. 105 



CEnothera dentata Cav. Io. PI. iv. 67 (1797). Type Jocalty, "Coqioimbo & Tal- 

 caguano. Chili." 



In the same locality as the last (No. 759). The petals in this species reach 13 mm. 

 in length. 



CEnothera gauraeflora Torr. & Gr. PI. i. 510 (1810). Type locality, "California." 



In Johnson (No. 553), Surprise (No. 613), and Cottonwood (No. 968) canons, Pan- 

 amint Mountains. If the Gaura deeortioam of Hooker and Arnott he really the 

 same plant as this, that specific name .should he retained. 



CEnothera grandiflora Ait. Hort. Kew. ii. 2 (1789). Type locality, "North 

 America." 



Yosemito Valley (No. 1850). 



CEnothera hartwe^i lavandul-efolia (Torr. & Gr.) Fl. i. 501 (1840), as (E. laran- 

 dulccfolia; Wats. Proc. Amer. Acad, viii. 590 (1873J. Type locality, "Plains of the 

 Platte." 



In the Mormon Mountains, Utah (No. 1984). 



CEnothera micrantha Hornem. loc. indet., non Hort. ITavn, 

 Near Havilah (No. 1078). 



CEnothera refracta Wats. Proc. Amer. Acad. xvii. 373 (1882). Type locality, 

 "Southern California to Southern Utah." 



The petals are white or pale rose-colored, not yellow, as originally described. The 

 species occurred in the mountains east of Resting Springs (No. 342) ; in Vegas Wash 

 (No. 415); in Furnace Creek Canon (No. 463), and about the mouth of Hall Canon, 

 Panamint Mountains (No. 662). 



CEnothera scapoidea Torr. & Gr. Fl. i. 506 (1840). Typo locality, "clay hills 

 in the Rocky Mountains." 



At several points in the Lower Sonoran zone of the desert (Nos. 447, 461, 663, 861). 

 Nos. 663 aud 861 do not belong to the typical form of the species. 



CEnothera scapoidea purpurascena Wats. Proc. Amor. Acad. viii. 51)5 (1873). 

 Type locality, "on the eastern side of the Sierra from Oregon to Mono Lake." 



When the desert (Etiothera shall have been carefully studied in the field and with 

 full material, this plant will undoubtedly prove quite distinct from (E. xcapoidea. 

 It w T as common in the desert region, from the lowest to the highest altitudes of 

 the Lower Sonoran zone. The following localities were recorded: Long Valley (No. 

 190); Vegas Wash (No. 405); Furnace Creek Ranch (No. 471); Furnace Creek Canon 

 (No. 571); near Hot Springs, Panamint Valley (No. 664); Mill Creek and Willow 

 Creek (No. 771) canons, Panamint Mountains; Keeler; the eastern slope of Walker 

 Pass; and the western side of the Ralston Desert (No. 1997). 



CEnothera trichocalyx Nutt. in Torr. & Gr. Fl. i. 494 (1840). Type locality, 

 "plains of the Platte in the Rocky Mountains." 

 Near Willow Creek, Panamint Mountains (No. 753). 



CEnothera xylocarpa sp. nov. , Plate VIII. 



Plant of the subgenus Eu Oenothera, biennial or perennial, acaulescent, with a thick, 

 vertical root; leaves prostrate or ascendant, on petioles a little longer than the 

 blades; blade piunately parted, the terminal lobe much the largest, ovate, usually 

 cordate, irregularly undulate-denticulate, acute or obtuse, puberulent; lateral lobes 

 oblong, irregular in size, larger ones 2 to 6, smaller ones of about the same number, 

 sometimes all of them wanting; ovary sessile, pubescent, and somew T hat hirsute; 

 calyx tube Blender, short hirsute, 2.5 to 4 cm. lon#; calyx lobes 1.5 to 2 cm. long, 

 hairy like the tube, their apices united in the bud; petals yellow, cuneate-obcordate, 



