MCTNffiCIA. 



257 



Fertile FL Scale of the catkin subtrifid, with 2 flowers. 

 Perianth 0. Styles 2. Fruit compressed. 

 (Myrica. MONOEC.) 



4. PENTANDRIA. 



11. BRYONIA. Barren FL Calyx 5-dentate. Cor. 5-cleft. 

 Filaments 3. Anthers 5. 



Fertile FL Calyx 5-dentate. Cor. 5-cleft. Style trifid. 

 Berry inferior, globose, many-seeded. 



(Fagus sylv at. Quercus. Ord. POLYAND. 

 Atrip lex portulacoides. POLYGAM.) 



(HEXANDRIA.) 

 (Quercus. Ord. POLYAND.) 



5. POLYANDRIA. 



13. MYRIOPHYLLUM. Barren FL Calyx of 4 leaves. Petals 4. 

 Stam. 8. 



Fertile FL Calyx of 4 leaves. Petals 4. Stigmas 4, ses- 

 sile. Nuts 4, subglobose, 1 -seeded. 



15. POTERIUM. Barren FL Cal. of 4 leaves. Cor. 4-partite. 



. 3040. 



Fd?r/*7<? F/. CaZ. of 4 leaves. Cor. 4-partite. Germens 2. 

 2-celled, invested with the cat. 



12. CERATOPHYLLUM. Barren FL Cal. multipartite. Cor. 0. 

 Stam. 1620. 



Fertile FL Cal. multipartite. Cor. 0. Stigma nearly ses- 

 sile, oblique. Nut 1 -seeded. 



18. FAGUS. Barren FL in a globose catkin. Perianth single, 

 of 1 leaf, campanulate, 6-cleft. Stam. 5 12. 



Fertile FL 2, within a 4-lobed prickly involucre. Perianth 

 single, urceolate with 4 5 minute lobes. Germen incorpo- 

 rated with the perianth, 3-celled, 2 of them becoming abor- 

 tive. Styles 3. Nuts 1-seeded, invested with the enlarged 

 involucre. 



17. CASTANEA. Barren FL in a very long cylindrical catkin. 

 Perianth single, of 1 leaf, 6-cleft. Stam. 520. 



Fertile FL 3, within a 4-lobed, thickly muricated involucre. 

 Perianth single, urceolate, 5 6-lobed, having the rudiments 

 of 12 stam. Germen incorporated with the perianth, 6-celled, 

 with the cells 2-seeded, 5 of them mostly abortive. Styles 6. 

 Nut 9 \ 2-seeded, invested with the enlarged involucre. 



16. QUERCUS. Barren FL in a lax catkin. Perianth single, 

 somewhat 5-cleft. Stam. 510. 



Fei'tile FL Involucre cup-shaped, scaly. Perianth single, 

 incorporated with the germen, 6-lobed. Germen 3-celled, 2 



