WRIGHT : THE GENUS DIOSPYROS 
structure of the cotyledon, hypocotyl, and primary root. At 
a later date* a further contribution was made on the same 
subject, and in it a very great significance was alleged for 
seedling characters. Though the examination was mainly 
with seedlings of the Liliace® and Ranunculace®, the evidence 
seemed sufficient to justify the publication of a theory of the 
origin of monocotyledons founded primarily on the structure 
of their seedlings. This theory was again discussed at the 
British Association meeting, September, 1903. Fritsch,f in 
a general discussion on the value of anatomical characters, 
states that though seedlings may present a verv uniform type 
of structure throughout large groups, the anatomy of the 
seedling may be expected to indicate affinities more clearly 
than that of any other part of the plant. 
The length of the hypocotyl and primary epicotyledonary 
f!™ ,n a “ d general morphology of the first 
hZt T 8 ’ 8e ‘ h6r Wl ‘ h ‘ he P™»‘<mce or dropping of 
thecotyledons, provide ample material for the recognition of 
most Ceylon species of Diospyros. In addition t „ theBe 
the nBmber of traces per 
, , e e havionr of the epicotyledonary and 
in the^l^L ^rt'fM 6 hyp000tyl and primary root; these 
sl nsAfni - 1 ac "efficient t° allow one to construct 
Ur * ke '' ■** **“ “«**— of Ceylon 
Germi nation .—The time tat^n 
-.uyoccl^^;; o dryi “ gi “ germination 
f-h seeds are sown ^7° . «’ h ~, the 
several months before the'brimarv 7 m8 ’ 11 mar * ak<> 
Tha ^of an^rh 
8 "“ 
^ritsch. The use of Ax 
: New Vol. II. 
