CATALOGUE. 289 



seed rather acutely margined, minutely tuberculate and not shining, i" in 

 diameter. — From the Saskatchewan to Colorado, New Mexico, and Arizona. 

 Dry hillsides and alkaline flats from the Truckee River to Ruby Valley, 

 Nevada; 4-6,000 feet altitude ; May-August. (979.) 



MoNOLEPis PUSILLA, Torr. Very slender, 2-6' high, glabrous or sub- 

 farinose, erect, diffusely much branched from the base, often reddish ; leaves 

 remote, oblong or ovate, 1-4" long and 1" wide, obtuse and attenuate into a 

 very short petiole ; clusters 1-5-flowered, the often solitary seeds com- 

 pressed, rather obtusely margined, tuberculate and not shining, dark or 

 reddish, i" in diameter ; calyx and utricle usually evanescent. — Collected 

 by Anderson near Carson City, and rather frequent in the alkaline valleys 

 of "Western Nevada ; 4-5,000 feet altitude, May-July. (980.) Monolepis 

 spathulata, Gray, from Mono Pass, California, is more decumbent, the spatu- 

 late leaves numerous along the simple elongated branches, clusters crowded, 

 utricle very papulose-scabrous, seed less compressed, very smooth and 

 shining. 



Obione^ canescens, Moq. DC. Prodr. 13. 2. 112. Shrubby, 1-5° 

 high, hoary-canescent and pulverulent, unarmed, branches usually erect and 

 virgate ; leaves sessile, oblong or linear-oblong, narrowed at base, obtuse or 

 acutish, occasionally emarginate, entire, 1-2 i' long and 2-4" wide, (some- 

 times smaller and ovate or obovate ;) flowers dioecious, the staminate in dense 

 clusters at the extremities of the branchlets, the pistillate clusters less 

 crowded, axillary ; fruit 2-3" long, hoary-pubescent, sessile or short-pedi- 

 celled, wingless or winged by the more or less dilated margins of the vari- 

 ously toothed bracts. — From Dakota to Northern Texas, and westward to 

 Nevada and Southern California. Frequent in the dry and alkaline valleys 

 of Nevada and Utah; 4r-6, 000 feet altitude. Most of the specimens have 

 nearly or quite wingless fruit. (981.) Others have the bracts considerably 

 dilated, though still less than is frequently the case. (982.) 



Obione confektifolia, Torr. Frem. Rep. 318. Shrubby, 1-2° high, 

 rigidly and diffusely branched, spinose, scurfy or mealy-pubescent ; leaves 

 ovate or obovate, 3-6" long, short-petioled, obtuse or refuse or sometimes 

 acutish, entire, becoming rather thick and coriaceous ; flowers dioecious, the 



' OBIONE, GiBRTN. Pistillate flowers all without calyx and 2-braoted, the bracts more or less 

 completely united and becoming hardened or corky ; radicle superior ; otherwise as in Atnplex. — Monos" 

 cious orjdioBcious herbs or under shrubs, with mostly alternate entire or sinuate-dentate leaves. Moquin, 

 in DC, Prodr. 



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