ROSALES. 535 



sometimes variously united afterwards with the calyx-tube, 



Pia. 469. 



!Fig. 469. — DioncBa muscipula. Plant with flower-stalk. Natural siae. 

 Fig. 470. — Flower-cluster. Natural size. 

 Fig. 471. — Pistil cut vertically. Magnified. 



or enclosed in the swollen top of the peduncle ; styles usu- 

 .ally distinct. 



Order Haloragese. — Mostly aquatic herbs, about eighty species. 



