9^ Muhlenbergia, Volume 6 



while in Prof. Brewer's specimens the flowers are 4 or 4^ lines 

 long, and with a few hairs on the margins of the keel. — This 

 ranks with the andine species forming Agardh's tribe Micro- 

 phylli." 



A matted perennial with branching woody rootstocks 5 mm. 

 or more in thickness, the herbaceous stems commonly rising 



1 dm. or less above the ground, but spreading in mats 2 to 3 dm. 

 across. Even in my Yosemite specimens I can see no evidence 

 that the leaflets are retuse as described by Gray. They are spat- 

 ulate or oblanceolate, the largest about 15 mm. long, 5 mm. 

 wide, the rounded apex with a very short blunt mucro. The 

 calyx is 7 mm. long, the upper lobe cleft for 5 mm., the divis- 

 ions lanceolate-acuminate, the sinus V-shaped, the apices 3 mm. 

 apart when spread out. Since nothing is said about the lower 

 lobe in the original description, the inference is that it is entire. 

 It is slightly longer than the upper, oblong, minutely 3. toothed. 

 The corolla is 1 cm. long, the apices of wings and banner about 



2 mm. apart, the banner obovate, 9 mm. across, with a yellowish 

 or whitish spot on the face, the edges not strongly reflexed. 

 The wings are widely inflated, 6 mm. deep at the middle. The 

 keel is sparingly bearded at and a little above the middle. 



The above notes are taken from my 9006, collected in Lit- 

 tle Yosemite Valley, California, in the type region. 



Until last summer I had seen but a single collection of this 

 species from Nevada, made by Mr. C. L. Brown on Slide moun- 

 tain above Washoe. On July 23, 1910, I found it growing 

 abundantly on the west side of Slide mountain in granitic gravel 

 in bare open places at an elevation of about 8500 feet. The 

 species probably has a preference for granite. 



As noted by Gray, the Nevada specimens have somewhat 

 smaller flowers, being only 8 mm. long, but the length of the 

 calyx is about the same, 7 mm. While the parts of the corolla 

 are necessarily smaller, their shape is the same as in those from 

 the Yosemite, and the keel is glabrous as described. The floral 

 parts illustrated in figure 13 were taken from the Nevada speci- 

 mens collected bv Mr. Brown. 



