274 



DICOTYLEDONS 



lobes, which are again notched. The clusters of flowers are pen- 

 dulous on long hairy pedicels. The petals are wanting. The 



Fig. 3600. 

 Seeds and flowers of sugar maple. At the right is 

 a pistillate flower, in the middle a staminate flower, 

 and at the left the two seeds forming a samara. 



calyx is bell-shaped and several times 

 lobed, usually five times. The sta- 

 mens are variable in number. The 

 ovary is two-lobed and the 

 deeply forked. The fruit forms 

 two seeds, each with a long 

 wing-like ex|)ansion as shown 

 in the figure. The flowers of 

 the maple are polygamo-dice- 

 cious, that is the male members (sta- 

 mens) and female members (carpels) 

 may be in the same flower or in dif- 

 ferent flowers. 



SAXIFRAGINyt. 



529. The saxifrage family (sax- 

 ifragacese). — The early saxifrage 

 (Saxifraga virginiensis) is a small 

 plant \o-2^cm high, and grows on 

 rocky and dry hillsitles (fig. 361). 



The ovate or heart-shaped leaves Early saxifrage (Saxifraga virginiensis). 



have creiiate margins, and are clustered near the ground. The 

 scape bears a branched cluster of flowers at the summit. Floral 

 formula Ca5,Co5,Aio,G2. 



I'ig. 361- 



