Female Flower of Jug Ians regia and a few allied Genera . 631 
the region of insertion of the carpels. These bundles can be traced up the 
whole surface of the flower and pass off, three running to each of the four 
distichously arranged tips of the perianth leaves, as in Juglans (Text- 
fig. VI. 1 and 2). 
The ovule is bitegumentary, appendicular, and anatropous, and in these 
Text-fig. VII. 1 and 2. Moms nigra. 
Flower. Two diagrams from longitudinal 
sections of the ovaries of different flowers, 
i. From a bilocular, uniovular ovary. 2. From 
a unilocular ovary. 
d = dorsal bundles of carpel, ib = inte- 
gumentary bundle. I — loculus, pb = perianth 
bundles, v = ventral bundle of carpel or 
placental bundle. 
1. 
2 
Text-fig. VIII. 1 and 2. Rheum un- 
dula'.um. 1. Diagram from a longitudinal 
section of a female flower ; the diagram is 
drawn as if the flower were dimerous. 2. Dia- 
gram from a transverse section just below the 
separation of the perianth. Two whorls of 
three bundles go to the perianth. The trian- 
gular area within these represents the base of 
the trimerous ovary. 
d — dorsal bundles of carpel, e = embryo- 
sac. ii = inner integument, oi — outer in- 
tegument. pb = perianth bundles, v => ventral 
bundle of carpel or placental bundle. 
particulars resembles those of Castanea , Quercus , and Fagus , where, however, 
the outer and inner integuments are quite free from one another. 
In all the Amentiferae so far investigated by us the integuments are 
free from the nucellus. 
