: 
4) 
; 
5 i OS i 
CHAMBERI AIN—DIOON EDULE 4290 
I9gIo] 
Fic. 9.—Later stage, just before the embryo breaks through the base of 
the ee the proembryo at the left in fig. 13 is in this stage. 
F .—Embryo after the suspensor has begun to elongate: m, mucilage 
ities: one proembryo at the right in fig. 13 is in this stage. 
Fic. 11.—A somewhat later stage. 
Fic. 12.—Embryo shortly before the differentiation a cotyledons. 
Fic. 13.—Diagram showing the topography of embryos at the stages 
shown in figs. 8-12. 
Fic. 14.—Embryo showing the beginning of the meristem which is to 
produce the coleorhiza and later the root cap: x, the meristem; m, mucilage 
cavity in the suspensor. 
IG. 15.—Early cotyledon stage; the broader portion back of the cotyle- 
dons is coleorhiza; the sic show that the dermatogen is not yet differ- 
entiate 
Fic. 76 —Diagram of the stage shown in fig. 15: #, suspensor; c, coleo- 
rhiza; m, mucilage cavity; the cells of the dotted region (s) are rich in starch; 
the cells of the dotted region at the stem tip are small, but slightly vacuolate 
and contain numerous figures. 
Fic. 17.—Portion of the outer layer at the stage shown in fig. 16, showing 
that periclines are still taking place and that consequently the dermatogen 
is not yet differentiated. 
a 18.—Mitotic figure in the suspensor, showing rounded poles of the 
in 
Fic. 19.—Ripe seed, showing embryo with long cotyledons, the first leaf 
F ‘at the left, a scale leaf at the right, the coleorhiza (shaded), the stony layer 
(shaded), the outer fleshy layer, and the inner fleshy layer represented only 
by a fine line. 
