90 Proceedings of the Ohio State Academy of Science 



83. Bark of ripe twigs green, bundles scar or vascular bundle 

 in base of petiole i; pith rhombic. Euonymus. (55). 



83. Bark of ripe twigs gray, brown, or red ; pith cylindrical 



or nearly so. 84. 



84. Axillary buds sometimes superposed ; leaves finely dentic- 



ulate ; twigs light brown, sometimes thorny ; drupe 

 narrowly oblong. Adelia. (70). 

 84. Axillary buds not superposed; twigs not 4-angled, brown; 

 flowers epigynous ; fruit a fleshy drupe ; vascular 

 bundles in the base of the petiole 3. Viburnum. (77). 



84. Axillary buds not superposed ; leaves serrate with 



stipules, small ; bundle scar central ; twigs brown, 

 sometimes with thorns ; shrub-like trees with drupe- 

 like berries. Rhamnus. (60). 



85. Leaves coriaceous, evergreen, hence on wood of the 



previous season. Kalmia. (63). 



85. Leaves deciduous each year. 86. 



86. Leaves with the two outer lateral veins more or less 



parallel with the midrib; fruit a drupe. Cornus. (75). 

 86. Leaves pinnately veined to the tip, 3-6 in. long, fruit 

 an oblong drupe. Chionanthus. (71). 



