176 BOTANICAL GAZETTE [MARCH 
The “rumination” of endosperm, peculiar to Torreya among 
gymnosperms, arises from the extremely irregular encroachment of 
the endosperm upon the perisperm, the endosperm being resisted 
much more at certain points than at others. The same was found 
to be true of other “ruminated”’ seeds. 
THE UNIVERSITY OF CHICAGO. 
LITERATURE CITED. 
1. CHapMAN, A. W., Pash oe Amott; a reminiscence. Bor. GAZETTE 
10:251-254. map. 1 
Coker, W. C., Notes on ee sspeiet and embryo of Podocarpus. 
Bor. Gazerre 33:89-107. pls. 5-7. 
, On the gatos and hime it Taxodium. Bot. GAzkTTE 
36:1-27, 114-140. pls. 1-11. 1903. 
4. Lawson, A. A., The ees archegonia, fertilization, and embryo of 
Sequoia aguas. Ann. Botany 18:1-28. pls. 1-4. 1904 
5. Lyon, H. L., The embryogeny of Ginkgo: Minn. Bot. Studies. 3:275- 29° 
pls. 29-43. 1904. 
N 
Y 
6. Oxiver, F. W., On some points of apparent resemblance in certain fossil 
and recent gymnospermous seeds. New Phytologist 1:145-154- 19°? 
ve , The ovules of the older gymnosperms. Ann. Botany 17: 451-479. 
pl. 24. 1903. 
8. sclera AGNES, Spore Sal in Torreya californica. New Phytolo- 
gist 3:133-148. pls. 3-4. 
9g. ———.,, Studies in the a aS of Torreya californica Torr. II. The 
sexual organs and fertilization. New Phytologist 3:205- 216. pls. 7-9: 
1904. 
10. STRASBURGER, E., Anlage des Embryosackes und Prothalliumbildung bet 
der Eibe nebst anschliessenden Erérterungen. Festschrift Ernst Haeckel. 
Jena. 1904. 
EXPLANATION OF PLATES LIV. 
With the exception of Plate I, all figures were drawn with the aid of an Abbé 
camera lucida and reduced one-half in reproduction. Abbreviations are ad 
follows: br, bract; a, primordium of stamen; oi, outer integument; ii, inner 
in 
cells; im, tube nucleus; g, primary spermatogenous cell; sé, nucleus of stalk 
cell; b, body cell; m, functional male cell; m, functionless male cell; fr, haus 
torial region of pie eee nc, nucleus of neck cell; 0, e883 end, eD 
sperm, per, peris 2 peris, 
