6% CLASS XXL ORDER II. 



Ostrya. Ament imbricate. Staminate flowers calyx 

 a scale : filaments ramose. Pistillate flowers ament 

 naked : capsule inflated, imbricate, with one seed at its 

 base. 



Corylus. Staminate flowers ament imbricate : calyx 

 a scale : stamens about 8. Pistillate flowers calyx 2- 

 parted, lacerated : styles 2 : nut ovate, surrounded by 

 and included in the permanent leaf-like calyx. 



ORDER XVI. MONADELFHIA. 



Pinus. Staminate flowers calyx 4-leaved : stamens 

 many : anthers naked. Pistillate flowers calyxes in 

 strobiles or cones, scales 2-flowered : pistil 1 : nut with 

 a membranaceous wing (Perhaps more properly a sama- 

 ra.) 



Cupressus. Staminate flowers ament imbricate : calyx 

 a scale : corol : anthers 4, sessile. Pistillate flowers 

 ament strobilaceous : calyx a 1-flowered scale : corol : 

 stigmas 2, with concave points : nut angled. 



Jtidnus. Staminate flowers calyx 5-parted : stamens 

 numerous. Pistillate flowers calyx 3-parted : styles 3, 

 2-cleft : capsules echinate, 3-cclled, 3-seeded. 



Cucurbita. Staminate flowers calyx 5-toothed : cor- 

 ol 5-cleft : filaments 3. Pistillate flowers calyx and 

 corol like the staminate : pistil 3-cleft : pomaccous berry 

 large, 3 to 5-celled : seeds thickened at the margin. 



Cucumis. Staminate flowers calyx 5-toothed : corol 

 5-parted : filaments 3. Pistillate flowers calyx and cor- 

 ol like the staminate : stigmas 3, thick, 2 -parted : berry 

 with sharpish seeds. 



CLASS XXL DIOECIA. 

 ORDER II. DIANDRIA. 



8alix. Staminate flowers ament cylimlric : calyx a 

 scale, with a nectariferous gland at the base Pistillate 

 flowers ament and calyx like the staminate : styles 2- 

 cleft : capsule 1 -celled, 2-valved : seed with egret-lijkc 

 down. 



Fraxinns. Perfect flowers calyx 0, or 4 -parted : cor- 

 ol 0, or 4 -pe tailed : pistil 1 : samara 1 -seeded with a lan- 

 ceolate wing, Pistillate flowers ; calyx, corol and pis- 

 tils same as perfect. 



