CONTRIBUTIONS TO WESTERN BOTANY. 15 



E. sulcatum var. Arg^ense. 



Internodes, not grooved, slender; leaves revolute and appear- 

 ing linear, 6 lines long. Argus Mts. Same zone. 



E. deflexum var. insigne( Watson, Proc. Am. Acad. 14 295). 



More robust plants with long and ascending branches; invol- 

 ucres on slender peduncles about 3 lines long, which are often 

 erect; sepals round. 



E, nutans T. & G. Proc. Am. Acad. 8 181, E. rubiflorum Jones 

 Cent. «5 281. 



£. trachygonum var. subscaposum (Wat. Bot. Cal. 2 29.) 



This is a still more compact form with short petluncles and 

 few involucres, and is found in the high Sierras. 



B. lutecium (Coville Death Valley Rep, 190 t 21) Phyllogonum 

 luteoluni Coville 1. c. 



E. flexum var, Ferronis. 



This is a small plant with glandular hairy and nearly reni- 

 form leaves and glandular inflorescence, except the smooth and 

 only flexuous involucral peduncles; involucres cleft nearly to 

 the base, lobes triangular ; bracts broader than in the type. Perron, 

 l^tah, on clay soil in the Lower Temperate life zone. 



E. alatum var. HogoUense Stokes. 



.Ks in the type, but leaves spatulate and rounded at tip. San 

 Francisco Mts., N. .Ariz. Grows in the Middle Temperate life zone. 

 F>looms in August. 



E. Gordon! Benth. is E. capillare Small Torr. Bull. 25 51. 



E. collinum Stokes. 



Similar to E. subreniforme, but leaves roun«1 

 ;ind rarely cordate at base; inflorescence less divided; um- 

 bels only twice divided and then shortly corymbose, open and 

 sparsely flowered ; pubescence wholly floccose-woolly, sparse on 



