1 3 Saxifragaceae 



Stamens 5, plant with short bulblet bearing 

 rootstock. Hemieva. 



Stamens 10. 



Plants without caudices; only producing annual 



flowering stems. Saxifraga. 



Plants with perennial leafy caudices, often with 



offsets. Muscaria. 



Base of the calyx only slightly developed, unchanged 



at maturity. 



Leaves alternate, sometimes all basal. 

 Plants stemless. 



Corolla regular, petals about equal in shape 



and length. Micranthes. 



Corolla irregular petals of different shape and 



length. Spatularia. 



Plants with stems. 



Carpels distinct ; leaf -blades toothed. 



Leptarrhena. 

 Carpels partially united ; leaf -blades entire. 



Leptasea. 



Leaves opposite except sometimes on the flower- 

 stalks. Antiphylla. 



Perennial with a slender creeping 

 Chrysos- 

 plenium rootstock; stems iJ-6 inches 



tetrandrum high, branched above. Leaves al- 

 Th. Fries. ternate, the lower ones on petioles 

 Golden I-2 i nc hes long; blades thick, 



Saxifrage. . 



remform, an inch or less wide, 

 crenate with 3-5 broad teeth, shining above, 

 paler beneath, upper ones larger and more 



