Order XLVIII
OLACINEÆ.
Smooth trees or shrubs, with simple stalked exstipulate alternate entire leaves, and little axillary flowers. Botanists doubt whether what is called a calyx is not rather an involucrum, in which case the corolla would become a calyx, and the station of the order among Monochlamydeæ, rather than in this place. 890 Ximénia W.