Nevada, Uiali, and Arizona. 73 



})rise Canon. Panamint IMountains, California, l>y Frcflerick V. 

 Coville. 



Isom3ris arborea globosa var. nov. 



Stem not glaucous ; petals ovate, sub-palmately veined ; cap- 

 sule globose, truncate or retuse, 2.5 to 3.5 cm. long; seed with 

 a transverse groove l)otween hilum and ])ody ; otherwise as the 

 type form. 



Our plant differs conspicuously from the type form in the shajjc 

 of its capsules, a character at once noticeal)le in the living plant. 

 The stems of the new year's growth in the type form are glaucous ; 

 the petals narrowly oblong and pinnatcly veined ; the capsules 

 oblong, attenuate into the stipe, abruptly tapering at the apex ; 

 and the seeds without a groove between the hilum and the bod}'. 

 The same plant as ours, but without mature fruit, was collected 

 l)y Xantus do Vesey near Fort Tejon in 1857-58. 



Type specimen in the United States National Herbarium, No. 

 1107, Death Valley Expedition; collected June 24, 1891. on 

 Caliente Creek, a few miles above Caliente, Kern County, Cali- 

 fornia, by Frederick V. Coville. 



The characteristic distriliution of this variety was not ascer- 

 tained. It might be expected to be a form modified by proximity 

 to the Mohave Desert, but the type form enters the western por- 

 tion of this desert in at least one place, Tehachapi Pass ; and 

 flowering specimens, presumably of the type form, were seen in 

 April about forty miles from Mohave on the road from that place 

 to Searles' borax establishment. 



Lepidospartum striatum sp. nov. 



Shrub 1 to 1.6 m. liigh, with a stout erect trunk ; branches 

 numerous, erect, striate-anglcd by 3 ribs decurrent from each 

 leaf-base, closely white-tomentose, the ribs resiniferous and gla- 

 brous; leaves alternate, filiform-linear, thicker above, acute, 

 slightly spreading, 20 to 25 mm. long, or the upper only 10 mm. ; 

 heads 2 to 5 at the apex of the branch, singly sessile, or very 

 short-peduncled, in the axils of leaf-like bracts, 12 to 16 mm. long ; 

 involucre ol)long to narrowly oblong, 7 to 10 nmi. high; bracts 

 about 9, broadly ovate to narrowly oblong, obtuse, stiff, coria- 

 ceous, with narrow membranaceous inargin, lanate on the back^ 

 imbricated, the outer successively shorter; flowers 5; corolla 



HI— Bini,. Soc. Wash.. Vmi.. VII. ^H'.)2. 



