tort] HAGUE—DIOSPY ROS 43 
EXPLANATION OF PLATES I-III 
Fic. 1.—Diagram of a cluster of staminate buds. 
Fic. 2.—A pistillate bud, showing enveloping bracts (6). 
Fic. 3.—A pistillate bud, showing a single bract (>) and the beginning of 
the calyx. 
Ic. 4.—A pistillate bud, showing calyx (k), corolla (c), stamens (s), and 
pistil (f). 
Fic. 5.—A staminate flower, showing calyx (k), corolla (c), the two stamens 
(s), and pistil (). 
Fic. 6.—A cross-section of a pistillate flower, showing the unusual division 
of the calyx into five parts, the union of the corolla, and the four parts of the 
pistil; diagram 
Fie. 7. hi ovule with the two integuments. 
Fic. 8.—The nucellus containing the mother cell, and sowie the begin- 
ning of the inner integument (7). 
Fic. 9.—First division of the megaspore mother cell. 
Fic. 10.—The two daughter cells. 
Fic. 11.—The four megaspores 
Fic. 12.—The four ibis the outer daughter cell divided by a 
vertical wall. 
Fic. 13.—The functioning megaspore; the others disintegrating. 
Fic. 14.—Embryo sac; polars differentiated. 
Fic. 15.—Diagram of an ovule showing the relative size of the parts, the 
shape of the sac (e), the stalklike nucellus (), and the massive integuments (7). 
Fic. 16.—The micropylar end of the embryo sac, showing the synergids 
and the enveloping tapetal layer. 
1G. 17a.—Micropylar end of sac; synergids and egg. 
Fic. 176.—Same sac as 17a, showing fusing polars. 
Fic. 18.—Micropylar end of sac; one synergid and the egg. 
Fic. 19.—Micropylar end of sac; egg and spindle-shaped bodies. 
Fic. 20a,—A detail of the micropylar end of a sac, showing the chromosome- 
like bodies and the egg filled with the densely staining globules. 
Fic. 20b.—Same as 20a; chromosome-like bodies more clearly shown. 
Fic. 21¢,—F using polars. 
Fic. 21b.—Fusing polars. 
Fic. 22.—First division of the primary endosperm nucleus. 
Fic. 23a.—Division of endosperm nucleus. — 
Fic. 23b.—Division of endosperm nucleus. 
Fic. 24.—Egg almost surrounded by endosperm. 
Fic. 25.—Egg; segmentation suggested. 
Fic. 26.—Young nee 
Fic. 27,—Young emb: 
Fic. 28.—Variation of ae of embryo. 
