112 



Muhlenbergia, Volume 8 



sinus: corollas deep violet-purple, large, 15 mm. long, 13 mm. 

 deep, a space 7 mm. wide between apices of banner and wings; 

 banner darker than the wings when dry, its face 7 mm. long, 

 rather narrow, edges turned back and apparently nearly meet- 

 ing, the back glabrous, the whole almost orbicular when spread 

 out, 13 mm. wide; wings moderately inflated, probably not more 

 than 6 mm., but very broad, 9 mm. deep and broadly rounded 

 toward the apex, completely inclosing the keel on the lower 

 side; keel glabrous, rather strongly curved but not rectangular, 

 4 mm. deep at the middle, the acuminate purple apex slightly 

 protruding from the apex of the wings in the mature flower: 

 ovary densely white silky. 



Figure 19. Floral parts of Ltipimis acutiiobiis, enlarged 

 The type, in the herbarium of A. A. Heller, is an unnum- 

 bered specimen collected by myself on the rocky slope of East 

 Butte, Marysville Riittes, in the Sacramento valley, California, 

 May 16, 1902. 



In leaf shape this handsome, very large flowered species is 

 more related to L. fallax and eminens than it is to albifrons^ 

 but seems quite distinct. The smaller and fascicled leaves are 

 beautifully fuscous, just as they are in L. Chamissonis^ which it 

 resembles in no other particular. 



