187 
Flowers dioecious, solitary on 
short arrested branchlets; 
stipules adnate to the petiole, 
seeds winged - . - Cercidiphyllaceae. 
Our knowledge of the family Winteraceae is still far from 
complete and much more collecting of the Australasian and 
South American species is desirable. With commendable perspic- 
acity, however, considering the material available, the la 
Prof. Van Tieghem has separated two or three small genera from 
Drimys, which further study will probably show to be fully 
justified. 
phical Distribution.—Wéinteraceae have, in contrast 
with the true Magnoliaceae, a much more tropical and southerly 
distribution. They are absent from Europe, Africa, Central 
Asia, and Western North America. The largest and most widely 
spread genus is Drimys, representing, however, a very homo- 
geneous group of species distributed from the Malay Archipelago 
through Eastern Australia to Tasmania, and ranging widely in 
South America, from Costa Rica to Tierra del Fuego, including 
the island of Juan Fernandez. The distribution of Drimys, 
ero eS 
“ t) 
= b> 
therefore, seems to point to considerable antiquity, connecting 
as it does two widely separated areas in the Southern Hemisphere 
(see map); and in floral structure it has a slight tendency to 
unisexuality and reduction so fully carried out in the case of 
the Schizandraceae. Illiciwm again, has an interesting distribu- 
tion closely resembling that of Magnolia and Liriodendron, but 
more subtropical. It is also a natural genus of closely allied 
species and must be of great age. It is confined to the Northern 
_ Hemisphere, from Assam to Japan and south to Borneo in the 
Old World, whilst in America it occurs only in Florida. Illicium 
