82 Muhlenbergia, Volume 6 



base, caducous: pedicels 3 mm. long-, sericeous; calyx densely 

 white silky, the upper lobe 3 mm. long, 2-toothed, the teeth 

 t mm. long, with a rather broad sinus, the lower lobe 5 mm. 

 long, shortly 3-toothed; flowers violet-blue, 1 cm. long, 6 mm. 

 deep, space between apices of banner and wings 3 mm.; banner 

 with the edges turned back and almost parallel, slightly flaring 

 at base and a little contracted at the middle, the face rather nar- 

 row, between 2 and 3 mm. wide, deeply grooved, the upper half 

 not much turned back, prolonged at base into a spur imm. long; 

 wings obliquely open below, exposing the keel to a little above 

 the calyx, the two when united about 3 mm. broad, with a broad 

 and shallow groove on either side of the edges where they fit 

 against the lower half of the banner; keel moderately curved, 

 4 mm. deep across the middle, ciliate except at the short pointed 

 purple apex. Figure 12 shows a tracing of the banner, made 

 with the aid of a camera lucida from a fresh flower, in addition 

 to the usual outline drawing of the flattened banner. 



The type, in the herbarium of the Nevada Agricultural 

 Experiment Station, is my no. 9857, collected July 16, 1900, at 

 Summit, Placer county, California, elevation 7000 feet. It is 

 abundant in the forest to the westward and a little below Sum- 

 mit Station, growing in open places near pine trees in gravelly 

 soil. In 1903 I collected it at Donner Lake, elevation 6000 

 feet, and distributed it under the name L. calcaratus, no. 6944. 

 It is somewhat related to that species, as denoted by the pubes- 

 cence and the general shape of the flower, which is longer than 

 deep, but it has both calyx lobes green and silky, and the smal- 

 ler flowers are blue instead of white, the banner not pubescent 

 on the back, the wings do not have such a low and broad infla- 

 tion, and the inflorescence is not so dense. 



There are three other specimens in our collection, all from 

 the vicinity of Webber Lake, California, collected by I'. B. Ken- 

 nedy and S. I'». Doten. Nos. 69 and 136 are labeled /,. calca- 

 ratus^ while no. [48 bears the name /.. meionanthus. There is 

 a possibility thai it has also been called L. caudatus, but I have 

 seen n<> specimens so labeled. So far we have no specimens 

 of this species from Nevada, but it should be looked for in the 

 mountains along the Truckee river and on the shores of Lake 

 Tahoe. 



