162 BOTANY OF THE DEATH VALLEY EXPEDITION. 



seminibua hovibus, staminibus inaequalibus, et hoc charactere Nama' accedit, 

 a qua imprimis stylis coimatis diff'ert." Asa Gray also said, 1 "A single species, 

 which would be referred to Nama except for the united styles." Upon examina- 

 tion of Marilaunidium (Nama) demissum it is found that the two styles, while organ- 

 ically distinct, are usually closely coherent throughout the greater part of their 

 length. Id the process of drying, however, the styles are usually drawn apart. 

 In Conanihus aretioides the styles when dried still remain attached. It was ascertained 

 by Miss Effie A. Southworth, who kindly examined the styles of both plants in 

 transection, that in Conanthw the two styles have become organically connected, the 

 epidermis being merely slightly indented along the line of union, while in Marilauni- 

 dium demissum the epidermis of each style continues entirely across the line of cohesion. 

 Such a difference alone, however, is too insignificant to form the basis of a genus. 

 Since this character of united styles alone keeps Conanthw distinct, it being in all 

 other respects a Marilaunidium, it seems best to transfer it to that genus, as a species 

 closely related to M. demissum. 



The species is known only from the Upper Souorau zone in the Great Basin 

 region of Oregon, California, Nevada, and Arizona. 



Marilaunidium demissum (Gray) Proc. Amer. Acad, viii. 283 (1873), under 

 Nama; Kuntze, Rev, Gen. PL ii. 434 (1891). Type locality, "dry or desert regions 

 of Nevada." 



In the Yegas Wash, Nevada (No. 413), in Mill Creek Canon, Panamint Mountains 

 (No. 758), western slope of Walker Pass (No. 1023), at Leach Point Spring (No. 1871), 

 and between Ash Meadows and Furnace Creek Ranch (No. 2153). The styles of this 

 species are often coherent except at the base and the apex. It is confined in the 

 United States to the Lower Sonoran zone of southeastern California, Nevada, Utah 

 and Arizona, and extends southward into Sonora and Lower California. 



Marilaunidium rothrockii (Gray) Bot. Cal. i. 621 (1876), under Nama; Kuntze, 

 Rev. Gen. PI. ii. 434 (1891). Type locality, "meadows, on S. Kern River, at 5,000 

 feet." 



In the Sierra Nevada near Soda Springs (No. 1606), near Whitney Meadows (No. 

 1719), and on the Hockett Trail between Lone Pine and Big Cottonwood Meadows 

 (No. 2152). Of a group of three species of Nama, anomalous in habit and confined 

 in distribution to the San Bernardino and Sierra Nevada ranges, Professor Greene 

 . has transferred two, N. lobbii and N. parryi, to Eriodietyon ; and although N. roth- 

 rockii has the technical capsular character of Nama, one can not doubt from the gen- 

 eral characteristics of the plant that its genealogical source is the Eriodictyon generic 

 type. 



This plant was always found in or a little above the zone of Pinus jeffreyi. 



BORAGINACEiE. 



Coldenia canescens DC. Prodr. ix. 559 (1845). Type locality, "in Mexico inter 

 Santander et Victoria," State of Tamaulipas. 

 At Bunkerville, Nevada (No. 1935). 



Coldenia hispidissima (Torr.) Pac. R. Rep. ii. pt. iv. 170 (1855), under Eddy a;* 

 Gray, Proc. Amer. Acad. iv. 340 (1862). Typo localitv, "on the Rio Grande about 

 El Paso." 



Near tho Vegas Wash, Nevada (No. 1898). In these specimens the surface of the 

 leaf, between the bristles, is canescently short-villous. 



»Syn. Fl.ii.pt. i. 171(1878). 



a With the description is published the note " Ehretiat hispida of the first edition 

 of this report.". I am unable to find the publication to which allusion is thus made. 



