Volume 8 May 31, 1912 



MUHLENBERGIA 



THE FLORA OF THE RUBY MOUNTAINS— V 

 By a. a. Heller 



Continued from page 24. 



After a climb of about one hundred feet above the canyon 

 proper, the axis of the main range was attained at 10300 feet. 

 As is the case at the head of nearly all of the canyons, this was 

 not the highest point in the immediate vicinity, but a "saddle" 

 between two high points, one of which ran up to at least iiooo 

 feet, but was not visited on account of the approach of midafter- 

 noon and a disinclination on my part to climb higher. 



The ground about this point is decidedly barren, the only 

 plants being low, stunted forms, and not many of them at that. 

 At the crest, among the rocks, Ivesia setosa was plentiful, its 

 short and thick stems rising from crevices wherever a little soil 

 had collected. Here was also found an undescribed Castilleja. 



Castilleja lapidicola n. sp. 



Perennial, pubescent throughout with short, white tangled 

 hairs: stems several from a slender perpendicular tap root, in- 

 cluding the inflorescence i dm. high or less, decumbent, the in- 

 florescence erect, the whole presenting a candelabra-like appear- 

 ance, leafy: leaves 15 mm. long or less, the lowermost especially 

 narrow, i to 2 mm. wide, bearing a pair of linear, divaricate 

 lobes near the middle, i to 3-nerved, according to whether the 

 leaf is simple or lobed, merging into floral bracts, which are pur- 

 plish, cuneate in outline, the 3 lobes often further 2 to 3-lobed, 

 their apices usually iurolled, more or less terete: inflorescence 

 7 cm. long or less, commonly 2 or 3 times the length of the 

 stems: calyx 15 or 16 mm. long, a little deeper cleft in front 

 than behind, the linear-lanceolate lobes nearly equal, cleft for 



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