140 Saxifragaceae 



an inch or more long, rounded at the apex. 

 An alpine species growing on moist, shaded 

 rocks throughout the Rockies, frequent, often 

 forming tufts of considerable size; flowering 

 in June. 



Leaves forming a rosette, spread- 



Micranthes . . 



rhomboidea ln g or ascending f-2 inches long, 

 (Greene) ovoid or rhombic-ovoid, obtuse, 

 Small. crenulate or dentate-serrate, 



Alpine nearly smooth except the .ciliate 



Saxifrage. 



margins, mainly green, some- 

 times purplish beneath, abruptly or gradu- 

 ally narrowed into petiole-like bases, which 

 are occasionally larger than the blades. 

 __ Flowers in a compact terminal head on a 



copiously glandular, naked scape 3-10 inches 

 ^*~ x~ 



high ; sepals ovate to triangular T V-| of an 



inch long barely if at all ciliate, 3-veined; 

 petals white, obovate or oblong-ovate, twice 

 as long as the sepals, notched at the apex, 

 seed pods green or purplish, the points 

 spreading. 



A frequent alpine plant in the more or 



o 



. 



