4'2 Imkli) Manual 



'■V2. Axillary buds not superposed or if so then the stam- 

 inatc riowors not in flexible catkins; leaves sini- 

 ,>lo. :?:V 



'■V-\. (.'arpeilatc llu\vcr> epig:ynous; pith solid, with dia- 

 phragms. CORNACEAE. 



a. Nyssa. (81). 



X'k Carpel late tlowers hypogynous or perigynous; pith 

 not diaphragmed. 34. 



• 14. Staminate and carpellate flowers in dense >pherical 



heads, sap not milky; leaves star-shaped, fragrant 

 when crushed. Hamameltdaceae. 



a. Liquidambar. (46). 



;t4. Staminate and carpeHate flowers not in dense spherical 

 heads unless the sap is milk}-; leaves not star- 

 shaped. So. 



■!"i. With milky sap; leaves with two prominent lateral 

 veins from the base or if not then the twigs thorny. 



AfORACEAE. 



a. Twigs with thorns; carpellate perianth deeply 1- 

 cleft, carpellate flowers capitate. Toxylon. (Vi). 



a. Twigs without thorns, b. 



b. Staminate and carpellate flowers in ament-likf 



spikes. Morus. (ol). 

 1). Staminate flowers racemose or spikatc. the car- 

 l)ellate capitate. Papyrius. (r».S). 

 •"'•'). Sap not milky. ^'O. 



• !<). Roth staminate and carpellate flower.-, in amenta, the 



carpellate flowers not subtended by a bur or cnp. -h. 

 •'Ui. Carpellate flowers not in aments, subtended by a cnp 

 or involucre; staminate flowers in flexible or some 

 what capitate aments. P'agaceae. 

 a. Staminate flowers capitate, ovular\- -i-angled. 



Fagus. (54). 



a. Staminate flowers in slender aments. b. 



b. Carpellate flowers 2-5 in each involucre, which be- 



comes prickly. Castanea. (55). 

 b. Carpellate flower 1 in each involucre, which con- 

 sists of numerous scales. Quercus. (50). 



