1895.] Embryology of the Ranunculacee. 303 
Figs. 31-41. Ranunculus abortivus. 
larger than its neighbors. x 335.—Fig. 33. The nuc 0 - 
usually broad initial cell is in division. X 335.—Fig. 34. Two initial 
cells that have each give ls which are apparently 
X 335. 
Fig. 39. Four cells have evidently been produced from the initial 
cell. The disorganizing cells above the large mother cell have greatly 
swollen walls. x 335. 
ig. 40. Mature embryo-sac, together with the surrounding tissue of 
the nucellus. Only two antipodals and two cells of the egg-apparatus 
are drawn. X 260. 
1g. 41,@ and 4. a, @ longitudinal radial section through an imma- 
ture carpophyll; 4, a transverse section made in the line «—x. x 85. 
Figs. 42-46, 60, Ranunculus recurvatus. 
F Median radial longitudinal section of a rudimentary ovule. 
The nucleus of the initial cell is drawn in outline. x 335. 
n Median longitudinal sections of the nucellus. In 
greatly in size after having been laid down. x 335- 
Fig. 60. Two antipodal cells, below which are two small tracheary 
elements: 
Sperm. X 335 
Figs. 47, 48, Ranunculus septentrionalis. 
f Fig. 47. Longitudinal section of nucellus. Four cells have been 
+e from the initial cell; the upper one has divided obliquely. 
35 
F ig. 48. The enlarging mother cell is partly hidden by the lateral, 
turgid cells. x 335- 
