66 ERYTHEA. 



sepals linear, 4-5 ram. long ; corolla white, its tube scarcely equal- 

 ing the sepals and about equaled by its sub-orbicular lobes, crests 

 conspicuous ; nutlets narrowly ovate, scarcely roughened on the back, 

 attached nearly their whole length to the subulate gynobase. 



Not very closely allied to any of the known species. I was at 

 first inclined to associate it with 0. fulvocanescens (Gray) Greene or 

 0. humilis (Gray) Greene, but its cajspitose habit, its softer pubes- 

 cence and short corolla tube preclude such comparison. 



It is coinraon on arid, naked hills throughout southern Wyoming,! 

 often forming solid mats several dm. across. The following collec- 

 tions fully represent it: 3072, Green River, June 1,1897; 3120, 

 Red Desert, June 3, 1897; 4338. Cooper Creek, June 6, 1898; 

 4749, Point of Rocks, June 15, 1898; 4497, Medicine Bow, July 

 9, 1898. Other numbers are 4671, 4772, and 2876, the latter 

 from Pine Bluffs, May 1897, more strictly canescent, inflorescence 

 more capitate and anthers nearly oval instead of oblong. 



Oreocarya flavoculata. Rather loosely tufted, the branches 

 of the caudex few to many, very short, clothed with dead leaf 

 bases: stems singly from the crowns (some of the crowns only leaf 

 bearing), 1-2 dm. high, with a loose, spreading, hispid-ciliate 

 pubescence : leaves crowded on the crowns and the stems somewhat 

 equably leafy to the top, linear-spatulate or narrowly obovate, 

 tapering into a slender petiole with expanded base, the cauline 

 becoming linear-oblong and sessile, finely canescent with some 

 longer, strigose, spreading hairs : inflorescence at first crowded but 

 at length a thyrsus of short, axillary racemes, the pubescence 

 fulvous and somewhat strigose : sepals narrowly lanceolate, about 

 7 mm. long : corolla white or yellowish, the throat and conspicuous 

 oblong crests a bright, clear yellow, tube slightly exceeding the 

 calyx and nearly twice the length of the oval lobes: nutlets short, 

 ovate, distinctly roughened-papillate on the back. 



This species has some characters in common with the preceding 

 and with 0. fiava Aven Nelson but is very distinct from them both. 

 Its long fornicate crests, yellow-eyed flowers and tufted habit make 

 it easily distinguishable. Collections of it as follows are at hand : 

 4572, Piedmont, June 7 (taken as the type) ; 4616, Carter, June 



t All localities given in this paper are in Wyoming unless otherwise stated. 



