SAXIFRAGE TRIBE. 



245 



tary terminal white flower : S. rivuldris (Alpine Brook 

 Saxifrage), another very rare species, grows on moist 

 rocks among the same mountains : besides which, other 

 species and varieties have been described, but an enu- 

 meration of them is not thought necessary here. 



CHRYSOSPLENIUM opposiTiFOLiUM (Common Golden Saxifrage). 



2. CHRYSOSPLENIUM (Golden Saxifrage). 



1. C. oppositifolium (Common Golden Saxifrage). 

 Leaves opposite, roundish heart-shaped. Sides of shady 

 rivulets, and wet woods ; common. A small aquatic 

 plant, about 6 inches high, with abundance of bright 

 green, tender foliage, and terminal, flat clusters of yel- 

 lowish green flowers. Fl. April, May. Perennial. 



2. 8. alternifolium (Alternate-leaved Golden Saxi- 

 frage). Leaves alternate, lower ones kidney-shaped, on 

 long stalks. Very like the last, and growing in similar 

 situations, but rare. The flowers in this species are of 

 a deeper yellow ; in both, the number of stamens is 

 usually 8. Fl. April, May. Perennial, 



