Class XXI. Order VIII. 

 rolla three petalled. Barren flowers with about 



s 



twenty four stamens. Fertile ones with numerous 

 pistils ; capsules many, swelling, one seeded. 



258. MYRIOPHYLLUM. Calyx four leaved, co- 

 rolla four petalled. Barren flowers with eight sta- 

 mens. Fertile ones with four stigmas ; seeds four, 

 coated. 



259. ARUM. Spathe one leafed; spadix cy- 

 lindrical, naked at top, with stamens in the middle 

 and germs at the base ; berries one celled. 



260. CALLA. Spathe ovate ; spadix covered 

 with flowers ; corolla none ; berry many seeded. 



261. FAGUS. Barren flowers, calyx campanu- 

 late, five or six cleft ; corolla none, stamens from 

 eight to twelve. Fertile flowers, calyx from four 

 to six toothed, hairy ; corolla none ; germs two ; 

 nuts two, contained in the coriaceous, four cleft, 

 prickly calyx. 



262. CASTANEA. Barren flowers, ament nak- 

 ed ; calyx none ; corolla five or six petalled ; sta- 

 mens from five to twenty. Fertile flowers, calyx 

 five or six leaved, muricated ; corolla none ; germs 

 three ; styles six ; stigma pencil form ; nuts three, 

 contained in the prickly calyx. 



263. QUERCUS. Barren flowers, ament naked ; 

 calyx four or five cleft ; corolla none ; stamens from 

 four to ten. Fertile flowers, calyx commonly six 

 toothed ; corolla none ; styles from one to five ; nut 

 coriaceous, surrounded at base by the persistent ca- 

 Ivx, 



