10 COSTRIBl'TIOS-S TO IVRSTBRN BOTANY. 



A. acaule, but I am not able to say surely. Blooms June to No- 

 vember. 



E. acaule var. Shockleyi (Wat. Proc. Am. Acad. i8, 194,) E. 

 Shockleyi Watson, E. pulvinatum Small. 



E. Cusickii. 



Stems in loose mats, crowns small; leaves revolute, delicate, 

 oblanccolate. obtuse, the blade fully half the whole, flat, on slender 

 petiole ; peduncles filiform, 3-4 lines long, erect; fiowers in a nearly 

 simple cyme or small umbel, which is about i inch wide; central 

 involucre nearly sessile, rays short, 2-4 lines long, and with either 

 a sessile involucre or w^ith a cyme whose lateral involucres are ses- 

 sile in their bracts; involucres campanulate, 1^2 lines long, 

 smooth, with short teeth, scarcely angled, green ; bracts small, hya- 

 line, reddish, w oolly margined ; flowers yellow, oblong, i line long, 

 outer sepals broadly oblong and nearly truncate at tip, the inner 

 much narrower and equaling them. This has the habit of E. 

 Kingii and is near it. 



Found growing on a stony desert, Harney Co.. Oregon, June 

 26, 1 00 1. No. 2603 Cusick. 



E. brevicaule var. pumulum Stokes. 



Inflorescence and involucres pubescent, the latter rigid; rays 

 very unequal, one to several, short, heads large and more copiously 

 flowered : always sessile in the first fork : leaves linear. This grows 

 at Colton and Kyune in the Coal Range. Utah, on the upper edge 

 of the Lower Temperate life zone, on rocks, at 6,000 feet altitude. 



E. chrysocephalum x brevicaule. 



This hybrid has the oblanceolate and crimped leaves of E. 

 chrysocephalum. about 15^ inches long, and habit of this species 

 hut it has the infloresence of E. brevicaule ; there is every kind of a 

 gradation between with still shorter leaves, which are elliptical 

 and with either single or compound heads. This abownds in the 



