10 ADDISONIA 
This interesting plant was collected by Britton and Cowell in 
the early spring of 1912, along a rocky stream near Ensenada de 
Mora, Province of Oriente, Cuba. Living plants only were obtained, 
and these consisted of the fleshy rootstocks and a few leaves. 
Flowers were produced for the first time in October of the same 
year. It is named in honor of one of the collectors, the late John 
F. Cowell, for many years director of the Buffalo Botanic Garden. 
It is of easy culture, and thrives well under conditions required by 
others of the fibrous-rooted begonias. 
It belongs to the section Begoniastrum A. DC., in the broad 
sense in which that is now regarded, subsection Eubegonia War- 
burg. There are between twenty-five and thirty species of Begonia 
known from the West Indies, all but two of which belong to this 
section. The seventy-five or one hundred species comprising this 
section are all natives of America from Mexico and the West Indies 
to South America. Many of these are in cultivation, including 
such well-known plants as Begonia nitida and Begonia semperflorens. 
GEORGE V. Nasu. 
EXPLANATION OF PLATE. Fig. 1—Plant. Fig. 2.—Staminate flower. Fig. 3. 
—FPistillate flower, seen from above. Fig. 4.—Pistillate flower, lateral view. 
Fig. 5.—Portion of stamen cluster, X 4. Fig. 6.—Styles, X 6. Fig. 7—Cross- 
section of ovary, X 4. 
