686 



CCI. SALICINE^. 



Willow, 

 t? flower (mag.). 



Willow. 

 Bmbvyo (mag.). 



Willow. 

 S catkin. 



Willow. 

 9 flower (mag.). 



Black Poplar. (,Populus nigra.) 

 i catkins. 



Popvlus virgmiana. 

 9 catldn. 



Willow. {Salix capraa.) 

 9 catkin. 



Willow. 

 Fruit (mag.). 



Willow. 

 Transverse section 

 Willow. of ovary 



Seed (mag,). (mag.). 



Poplar. 

 9 flower (mag.). 



bract. — Flowers $ : Peeianth replaced by a glandular annular or urceolate and 

 obliquely truncate disk. Stamens 2-oo , inserted on tbe centre of the torus ; filaments 

 filiform, free, or more or less connate ; anthers basifixed ; cells parallel, contiguous, 

 deliiscence longitudinal. — Flowees 2 : Peeianth 0,. disk glandular or urceolate. 

 OvAET sessile [or pedieelled], 1-celled ; placentas 2, parietal ; styles 2, very short, more 

 or less connate, eacb terminated by a 2-3-lobed stigma; ovules many, ascending, 

 anatropous. Capsule 1-celled, valves 2, revolute -when ripe, semi-seminiferous. Seeds 

 numerous, erect, minute ; testa membranous ; hilum basilar, truncate ; ftinicle sbort, 

 thick, expanding into a woolly tuft v^hich envelops the seed. Embrto exalbuminous, 

 erect ; cotyledons plano-convex, elliptic ; radicle very short, inferior. 



GENEEA. 

 * Salix. * Populua. 



