Nelson : New Plants from Wyoming 131 



and leaves and by the linear leaflets and leaf segments. It occurs 

 on dry, naked, clay ridges and slopes and on gully sides where its 

 long, stout root anchors it, in spite of the torrents that occasionally 

 pour over it. Two collections of it, no. 4769, Point of Rocks, 

 June 16, 1898, and no. 4873, Chalk Mt, July 13, 1898, the latter 

 by Mr. Elias Nelson. 



Dodecatheon salinum 



Crown very short, subglobosc, 5-8 mm. in diameter : roots very 

 numerous^ fascicled, rather slender but somewhat fleshy : leaves 5- 

 10 on the crown, widely spreading or merely ascending, glabrous, 

 rather thin, in the older leaves distinctly reticulated, entire, usually 

 elliptic, sometimes obovate or oblanceolate, obtuse, 2-4 cm. long, 

 on slender (rarely margined) petioles from one fourth to one half 

 as long, including the petiole about one fourth as long as the 

 single erect scape : scape slender, 10-20 cm. high, purplish above, 

 glabrous as Is also the inflorescence : bracts few, short, oblong or 

 spatulate, mostly obtusish : flowers from few to several (3-1 

 erect in bud on very short pedicels, nodding in anthcsis, the erect 

 fruiting pedicels much elongated (2-4 cm, long): segments of the 

 corolla lilac-purple, the undivided part yellowish-white with an in- 

 distinct purplish ring near the base : stamen ring yellowish-white, 

 shorter than the anthers ; anthers purple with whitish margins : 

 style glabrous, surpassing the stamens ; capsule elliptic, probably 

 when wholly mature somewhat exceeding the calyx, splitting from 

 the obtuse summit into two equal valves : seeds very numerous. 



The nearest ally of this seems to be D. paucijlonnu Greene 



from which its smaller size, different leaves, bracts, stamens and 



capsule readily distinguish it. Then, too, the habitat is different. 



D. paucifioruni is of wet or boggy, meadow-like bottom lands 



while this occurs on moist, strongly saline flats where other vege- 



tation is scanty. 



Type specimen in Herb. University of Wyoming, no 3012, 

 May 29, 1897. Collected again in 1898 near the same place. 

 Under the above number a few specimens were sent out as D. 

 Jeffreyi Moore, to which it bears but httle resemblance. 



Cuscuta Plattensis 



Stems yellowish-green, moderately slender, climbing the full 

 length of the stems of the host : flowers in either loose or dense 

 paniculate cymes, short pedicellcd: calyx lobes obtuse, suborbic- 

 ular, somewhat exceeding i mm. in length, the tube very short : 



