CONTRIBUTIONS TO WESTERN BOTANY. 72 1 



linear, none of the leaves at all sheathing, panicle narrow, 

 1—2° long, branches appressed, densely flowered; flowers 

 on filiform pedicels 4-6" long, pendent; fruit wings with- 

 out tubercles, triangular to deltoid, 2-3" long, coarsely 

 reticulated, sometimes rhombic, but in that case always 

 with a contracted slightly produced apex, always fimbriate 

 toothed below, and in the broader-winged forms very con- 

 spicuously so nearly to the apex. 



This grows in cold, gravelly, springy places along sub- 

 alpine streams, at from 10,000 to 11,000 feet altitude, 

 along with Oxyria digyna, Polygoniini bistorta and A(/u?7- 

 egia car idea. 



Croton longipes. 



No. 5213. May 12, 1894, two miles east of Leeds, 

 Utah, in sand, at 3500° alt. 



No. 5024au. April 5, 1894, west side of Copper Mine, 

 in Beaverdam Mountains, Nevada, 3000'^ alt., in gravel. 



No. 5149am. May 3, 1894, Silver Reef, Utah, in sand, 

 at 3500° alt. 



Shrubby at base, erector ascending, 1-2° high, slender, 

 freely branched, stems white-stellate, leaves oblong- 

 elliptical, apiculate, obtuse, rounded or short- cuneate at 

 base, i' long, on petioles nearly as long, densely or sparsely 

 stellate below, often glabrous above; flowers in very 

 short, umbellate racemes, on long, slender pedicels, 2-3'' 

 long; staminate flowers many, i" wide, with triangular 

 lobes; fertile flowers with pedicels subtended by linear 

 bracts; bracts as long or longer than the pedicels; calyx 

 of the pistillate flowers similar to that of the staminate 

 ones, but nearly 3" wide; fruit nearly round, i" long, 

 densely white-stellate. This can neither be placed with 

 C . Californiciis, C . gracilis nor C . Neo-Mexicanus, though 

 it is related to them all. It is nearest C . corymhulosits, 

 but the flowers are smaller, the calyx lobes very different, 



