Class XXI. Order IX. 313 



264*. JUGLANS. Barren flowers, ainent imbri- 

 cate ; calyx seals form ; corolla six parted ; 

 filaments about eighteen. Fertile flowers, calyx 

 four cleft, superior j corolla four parted ; styles 

 two ; drupe coriaceous, with a grooved nut. 



%G5. BETULA. Barren flowers, anieut imbri- 

 cate, scales peltate, three flowered ; calyx a scale ; 

 corolla none ; stamens from ten to twelve. Fertile 

 flowers, ament imbricate ; calyx scale two flower- 

 ed ; corolla none ; seed one, winged. 



266. CORYLUS. Barren flowers, calyx a scale 

 of the ament, three cleft ; corolla none ; stamens 

 eight. Fertile flowers, calyx two cleft, lacerated ; 

 styles two ; nut ovate, smooth, surrounded with the 

 persistent calyx. 



267. OSTRYA, Barren flowers, ament imbri- 

 cate ; calyx a scale ; corolla none ; filaments branch- 

 ed* Fertile flowers, ament naked ; calyx none ; 

 corolla none ; capsules inflated, imbricated, one 

 seeded at base. 



&68. PLATANUS. Aments globular. Barren 

 flowers, corolla hardly visible ; anthers growing 

 round the filament. Fertile flowers, corolla many 

 parted ; stigma recurved ; seeds roundish, with a 

 capillary down at the base. 



Order IX. MONiWELPHM. Stamens united. 



269. PINUS. Barren flowers, calyx four leav- 

 ed, corolla none ; stamens many. Fertile flowers, 

 ament a cone ; calyx scale two flowered ; corolla 

 none ; pistils two ; nuts two, winged 



