Nov. 10,1913 Pubescent-Fruited Species of Prunus 151 
BOTANICAL CHARACTERS OF THE GROUP 
The botanical characters of the seven species under consideration, even 
the obvious character of the leaves and fruit, are so distinct from those 
generally recognized as belonging to wild or cultivated plums that it is 
not surprising that the Mohave Desert form was first assigned by Dr. 
Torrey to a new genus, Emplectocladus, from the Greek words referring 
to its interlocking branches. This was later placed in the genus Prunus 
by Gray, but as a separate section. Schneider, while including all these 
Fig. 2.—Map of Texas, showing the known areas and probable range of Prunus minutiflora and Prunus 
iexana. 
species under Prunus , 1 groups them in the section Emplectocladus along 
with Torrey’s original species, Prunus (. Emplectocladus ) fasciculata, and 
the Old World P. pedunculata. Several authors have assigned some or 
all of the species to Amygdalus. 
The study of the entire group from abundant material and the field 
examination of all but Prunus microphylla and P. havardii convince the 
writer that they are separable into three distinct sections. 
1 Schneider, C. K. Illustriertes Handbuch der Taubholzkunde. Bd. i, Lfg. 4, Jena, 1905, p. 589-590. 
