Saxifragaceae 129 



basal leaves; flowers perfect, racemose, 

 cymose or paniculate ; calyx 5-lobed or parted ; 

 petals 4 or 5, white, yellow or greenish or 

 sometimes rose-coloured; stamens equal or 

 twice the number of the petals; carpels i- 

 several, distinct or united. 



Placentae parietal. 



Flowers solitary and axillary ; sepals 4 ; stamens 4-8. 



Chr y so splenium . 



Flowers in more or less elongated racemes. 

 Flowers with 2 or 3 equal carpels. 



Flower-stalk axial from a bulbiferous rootstock. 



Lithophragma. 

 Flower-stalk a lateral shoot from a stout scaly 



rootstock. 

 Inflorescence racemose. 



Petals pinnately cut or pinnatifid. 



Base of the calyx campanulate deeper 

 than the length of the sepals. 



Tellima. 



Base of the calyx saucer-shaped, shal- 

 lower than the length of the sepals. 

 Ovary more than half superior; disc 

 inconspicuous. Mitella. 



Ovary wholly inferior, covered with 

 the prominent disc. Pectiantia. 

 Inflorescence paniculate. Heuchera. 



Flowers with 2 very unequal carpels. 



Tiarella. 

 Placentas axial. 



Base of the calyx well developed, at maturity longer 

 than the sepals. 





