(398) 
87. Webber, H. J. Xenia, or the immediate effect of pollen, in 
maize. U. S. Dept. Agric., Div. Veg. Path. & Phys., 
Bull. No. 22. 1900. 
88. Westermaier, M. Zur Embryologie der Phanerogamen insbe- 
sondere iiber die sogenannten Antipoden. Nova Acta Akad. 
Caes. Leop. Carol. 57: 1-39. fl. 7-37. 1892. 
89. ———-. Zur Physiologie und Morphologie der Angiospermen- 
Samenknospe. Beitr. Wiss. Bot. 1: 255-280. Al. 5, 6. 1896. 
KY To THE LETTERING OF TEXT-FIGURES AND PLATES 
¢, carpel. x, pistillate flower. 
n, nucellus. zz, inner integument. 
0, placenta oi, outer integument. 
, petal. , hausto 
5, sepal. pt, pollen-tube 
st, staminodium. en, endosperm. 
si, stigmatic lobe. 
Explanation of Plates 58-69 
Fevillea cordifolia (PLATES 58 AND 59). 
I. Apex of shoot, showing origin of pistillate flowers. >< 60. 
4. 
X 184. 
4. Later stage of same, showing origin of sepals. > 184. 
5. Ditto, showing origin o Is. 
6. Outline sketch of later stage, showing origin of carpels and staminodia. 
X 60. 
7. Transverse section through young ovary, showing origin of the pla- 
centae. 144. 
8. Placenta and ovule. 60. 
9. uaa cell, 40. 
to. Showing condition of nucellus. I 
11. Primary sporogenous cell and (apetia. xX 440. 
12. Spore-mother-cell deep in tissue - aria X 440. 
13. Form of ovule, aa sectio 
14. Megaspore-mother-cell. capi of es division. XX 920. 
20. 
16. Four megaspores; lowermost one functional. > 920. 
17. Embryo-sac of four cells. 440, 
18. Embryo-sac approaching maturity. > 440. 
19, Definitive embryo-sac. X 480. 
20. Embryo-sac and upper part of endosperm. > 440. 
21. Portion of nucellus showing extent of endosperm. X 4o. 
22. Embryo and endosperm. 40. 
