86 
WRIGHT: THE GER US DIOSPYROS 
oocarpa ; in D. Toposia the calyx of the male flower is closed 
in the bud, and bursts irregularly into two or more segments 
when the flower opens. The calyx segments are most 
strongly marked in D. Embryopteris, D. Ebenum, D. Gard- 
neri, &c., but in many of the species belonging to this class 
the conspicuousness of the calyx segments becomes reduced 
during the development of the fruit. 
The calyces of the female and hermaphrodite flowers can 
be divided into several classes, the first comprising those 
which even after fruiting remain small, thin, and horizontal, 
as in D. pru riens, D. montana, D. sylvatica, D. attenuata, D. 
oocarpa, and others, the second class comprising those which, 
though they have undergone considerable enlargement 
during the formation of the fruit, remain relatively thin 
and horizontal, as in D. Moonii and D. hirsuta, the third 
those which increase considerably in size and form a shallow 
or deep cup in which the ripe fruit is lodged, as in D. 
Gardneri, D. oppositifolia, D. affinis, D. quæsita, D. insignis, 
and many others. 
During the formation of the fruit the calyces of the third 
class show different courses of development. The most 
usual is to form a very large inter segmental pouch and 
pointed apices,together with a feeble reflex margin ; this is 
best seen in D. quæsita ; in other species, notably D. Ebenum, 
the apices become strongly pointed and horizontal and the 
margin strongly reflexed ; in D. insignis and D. crumenata 
the enlarged woody calyx becomes strongly four-sided in 
consequence of the dying back of the apices of the segments 
and the very reflex nature of their margins. 
Many of the calyces, though highly pubescent in the 
flower stage, become glabrous in the fruiting stage. The 
hairs, with one exception, are long unicellular outgrowths 
from single cells. In D. Ebenum, however, the base of the 
shallow calyx cup is covered with unicellular and pedicel¬ 
late hairs, the latter having very much the appearance of 
globular multicellular glands supported on pedicel^ of 
