LXIX. ACEEINE^E. 



355 



coloured, imbricate, deciduous. PETALS 4-5 or 0, often sepaloid, inserted on the 

 edge of a free disk surrounding the base of the ovary, shortly clawed, aestivation 

 imbricate. STAMENS inserted with the petals, equal or more numerous, 4-12, oftener 



Maple. 

 Vertical section of flower (mag.) 



Maple. 

 Seed entire and cut (mag.). 



Maple. 

 Diagram. 



Maple. 

 Young pistil (mag.). 



Acer Negundo. 

 $ flower. 



8 ; filaments filiform, free, sometimes very short ; anthers 2-celled, introrse, oblong-, 

 basifixed or versatile, dehiscence longitudinal. OVARY free, sessile, 2-celled, 2-lobed, 

 compressed perpendicularly to the septum ; style central, sub-basilar ; stigma bifid ; 

 ovules 2 in the central angle of each cell, superimposed or collateral, pendulous, 

 campy lotropous. FRUIT of 2 samaras or ] - (rarely 2-) seeded cocci, prolonged into a 

 dorsal coriaceous or membranous wing, reticulate, and remaining suspended to a 

 carpophore, as in Umbelliferce. SEEDS ascending ; testa membranous ; endopleura 



A A 2 



