Class XXI. Order IX. 333 



415. CARPINUS. Barren flowers, calyx the scale of 

 an ament, roundish ; corolla none ; stamens from eight 

 to twenty. Fertile flowers, calyx the scale of an 

 ament, oblong ; germs two with two styles on each ; 

 not angular one celled. 



416. OSTRYA. Barren flowers, ament imbricate; 

 calyx a scale ; corolla none ; filaments branched, fer- 

 tile flowers, ament naked ; calyx none ; corolla none ; 

 capsules inflated, imbricated, one seeded at base. 



417. PLATANUS. Aments globular. Barren flow- 

 ers, corolla hardly visible ; anthers growing round the 

 filament. Fertile flowers, corolla many parted ; stig- 

 ma recurved ; seeds roundish, with a capillary down 

 at the base. 



Order IX. MONADELPHM. Stamens united. 



418. PINUS. Barren flowers, calyx four leaved, 

 corolla none ; stamens many. Fertile flowers, ament 

 a cone ; calyx scale two flowered ; corolla none ; pis- 

 tils two ; nuts two, winged. 



419. CUPRESSUS. Barren flowers, ament imbri- 

 cate ; calyx a scale ; corolla none ; anthers four, with- 

 out filaments. Fertile flowers, ament a cone ; calyx 

 scale one flowered ; corolla none ; stigmas two ; nut 

 angular. 



420. THUYA. Barren flowers, calyx the scale of 

 an ament ; corolla none ; stamens four. Fertile flow r - 

 ers, calyx a two flowered scale of a cone ; corolla 

 none ; pistils two ; nut one, winged. 



4^1. ACALYPHA. Barren flowers, calyx three or 

 four leaved ; corolla none ; stamens about twelve. 

 Fertile flowers, calyx three leaved ; corolla none ; cap- 

 sules three grained, three celled ; seeds solitary. 



