MR HIERN, ON EBENACE^E. 



61 



The family as here presented contains 5 Genera, namely, 



Royena 13 species, Diospyros about 160 species, 



Euclea 19 species, Tetraclis 1 species; 



Maba 56 species, 



in all about 250 species; besides several fossil species that have been described as members 

 of the family. 



EBENACE.E. 

 KEY TO THE GENERA. 



Corolla with contorted aestivation. 



Hermaphrodite or rarely sub-dioecious. Stamens in one row. I. ROYENA. 



i . . 



Dioecious or rarely polygamous. Stamens usually in 2 or more rows, often in pairs. 



Calyx not accrescent. Staminodes usually absent from the 9 flower. 

 Ovary 4- (or very rarely 2- or 6-) celled. Inflorescence usually 

 racemose, rarely panicled. II. EuCLEA. 



Calyx often accrescent. Staminodes usually present in the 9 flower, 



except in the section Ferreola of MABA. Ovary usually 3-, 6-, or 



8-celled, occasionally 4- or 10-16-celled. Inflorescence cymose or 

 1-flowered, not racemose. 



Ovary 3- or 6-celled. Flowers usually trimerous. 



in. MABA. 



Ovary 4- or 8-1 6-celled. Flowers rarely trimerous. 



IV. DIOSPYEOS. 



Corolla with valvate aestivation. 



V. TETRACLIS. 



THE AFFINITIES OF EBENACRE. 



The following families have the closest affinity to JEbenacece. 

 OlacinecB. 



Points of approach : 



Calyx often accrescent. Seeds usually pendulous ; albumen usually copious. Leaves 



alternate or rarely opposite, simple, usually quite entire, exstipulate. 

 Points of departure: 



Petals usually valvate in aestivation. Ovary usually 1 -celled. Stamens sometimes in 

 part sterile. 



