58 



etocka; stems triangular, erort, moderately stout ; leaves long and abundant. 

 Ixemarkably abundant on the banks of Bitter Creek and in somi^ of the spring 

 bogs. Fifteen Mile Springs, July 14 (3726); Point of Rocks, July 12 (3714); 

 South Butte, July 14 (3740). 



Scirpus campestris Britt. (Pkairie BclrusiiV— An exceedingly leafy species 

 developed from tubers, which are annually produced at the end of short, hori- 

 zontal root-stocks. Bitter Creek, September 3 (44.")9). 



Cc' rex marcida debilis Bailey. — This is a small sedge with numerous weak stems 

 from a thick, horizontal root-stock, only (> to 9 inches high; on the drier ridgea 

 about the spring bogs; not abundant. Black Rock Springs, .July 13 (3720). 



Carex multinoda liailey. — This slender-stemmed sedge produces a large amount of 

 long, tender leaves, and forms a close sod. It is one of the most valuable from 

 a forage standpoint of the sedges of the desert. South Butte, .July 13 (373.^). 



Carex uebraskensis Dewey (Nkbkaska Sei>ge). — Very leafy, the leaves broad, 

 almost as long as the stems. 1 to 2 feet or more in height. Usually in very wet 

 ground, such as ditches and meadow bogs. When these dry out in late summer 

 it is cut to a considerable extent for hay. It of course occurs in the desert only 

 rarely, but in some of the bogs it is quite almndant. South Butte, July 13 (3741). 



Carex stenophylla Wahl. — A small, scattering form only a few inches high, usually 

 developiug early; among the sagebrusii in the desert it is too scattering to have 

 .any signiticance. Creston, August 2S (4415). 



Carex teretiuscula Good. — This form has very slender, almost cylindrical leaves 

 and stems but makes a very (-lose and even growth on wet saliue soil, often in 

 pjitches of considerable size. Black Rock Springs, July 13 (3710 and 3725); 

 South Butte, July 13 (3734a). 



JUNCACEiE. 



Juncus balticus Willd. (Baltic Rush). — A well-known rush with rather rigid stems 

 which arise (juite regularly from a creeping, underground root-stock. It varies 

 greatly in both size and habitat. In wet ground, as in the juargins of a stream, 

 it may attain a height of 3 feet or more; on dry sandy slopes, where it was 

 sometimes found to occur in the desert, it may be scarcely a foot high. It proba- 

 bly has little forage value, though it is eaten to some extent with the other 

 vegetation when intermingled with it. I'oiut of Rocks, June 1 (3095); Bitter 

 Creek, July 12 (3690). 



Juncus confusus Coville. — A slender form of compact growth, 10 to 15 inches 

 high. In some of the deeper draws in the desert where the spring snows lie 

 late this forms extensive patches of close sod. Whether it is eaten to any 

 extent by stock of any kind the writer is unable to say. Creston, August 29 

 (1427). 



Juncus xiphioides moiitanus Kngelm. — Tall and slender with aiujile U.it leaves, 20 

 to 30 inches high. It is abundant in many of the spring bogs, aud seems to be 

 freely browsed by stock. South Butte, July 13 (3739). 



LILIACE^J. 



Allium mutabile Michx. (Wili> Oniox). — Peculiar among the wild onions in that 

 it sometimes produces little bulbs in the inflorescence. All of the specimens 

 colle(;ted bore bulblets. Not common. In a draw among the hills north of 

 Uotk Si)rings. The (iaj), .July 25 (3600). 



Allium reticulatum Don. (Fkaskr's Wild Onion). — A common (brni on the slopes 

 of the hills throughout the ilesert. Green River, May 31 (3033;; Point of Rocks, 

 June 1 (3076). 



SALICACEiE. 



Salix cordata mackenzieana Hook. — This willow becomes a small, rather shapely 

 tu-c. It seems to be a very common form on the banks of Green River and some 

 of its tributary creeks. Green River, May 31 (30()6). 



