MOXOECIA. rOLYANDRIA. £19 



The oric^mal species of the g-cnus (C. Betulus) Is indi- 

 genous to Europe, there is also a third in the Levant. 



757. OSTRYA. J/ic/te^t. (Hop-hornbeam Tree.) 

 Ament imbricated. Masc. Calix consisting 



of scales. Filament of the stamina ramose. 

 Fem. Ament naked. Caps^des inflated, imbrica- 

 ted at the base, 1-seeded ^ 



Habit similar to that o/' preceding g^enus. 

 Specjes. 1. O. virginka. — Of this genus there is a se- 

 cond species in Europe. 



758. PLATANUS. Z. (Buttonwood. Sycamore.) 

 Ament globose. Masc. Calix none. Corolla 



scarcely manifest. Anthers adnate to the fila- 

 ments from the base. Fem. Calix many-leaved. 

 Corolla none . Stigmas vGcur\ci\, Ci-psulessub- 

 clavatc, 1 -seeded, mucronate with the style, 

 pappose at the base. 



Large trees; leaves (as in the Maple) palmately lobed 

 or angularly divided; stipules large; aments pendulous. 



SpeciesM. p. occidentalis. — Of this genus there are 3 

 other specie#natives of the Levant. 



759' LIQUIDAMBAR. L. (Sweet-gum Tree.) 

 Masc. Ament conic, surrounded with a 4- 

 Jeaved involucrum. Calix and corolla none. Fi- 

 laments numerous. Fem. Ament globose, also 

 surrounded with a4-leaved involucrum. Calix 

 I -leaved; urceolate, 2-l!owered. Styles 2. Cap- 

 sules 2, surrounded by tlie base of the calix, i- 

 celled, many-seeded. 



Balsamiferous trees with sinuately palmated leaves 

 ^similar to those of the .Maple); araents aggregated, tern;:- 

 nal, masculine decifluous, fenriaies pedunculated and pen- 

 dulous. 



Species. 1. L. Sfyracifua. From Xew England to Flo- 

 rida, also indigenous to Mexico and cxter.ding to the shores 

 cf the Pacific ocean. In the warmer parts of America 

 exuding a balsamic resin. Obs. Female ament glo- 



