612 



Transaction*. 



Nothopanux arboreum the cotyledons, borne on the lengthening hypocotyl, 

 point towards the [integument where it is nearest, and away from the 

 funicle. 



A cross-section of the embryo of the seed shows the cot}''ledons, which 

 are concave on their inner surfaces, and the body of the embryo showing 

 delicate cell wa' Is, which are not clearly defined. In a seed which had lain 



Fig. 21. — Cross-section of seed with embryo. X 28. 



Fig. 22. — Cross-section of embryo cotyledons. X 175. 



Fig. 23. — -Longitudinal section of embryo from seed. X 175. 



in the ground apparently for a whole season, and was found among seed- 

 lings, the ovary-wall pericarp was softening, but the embryo had achieved no 

 very great size. Seeds which were planted for three months showed no 

 signs of germination. 



EXPLANATION OF LETTERING IN FIGURES. 



a. archesporium. 



ar. arillus. 



c. cotyledons, 



e. embryo. 



e.s. embryo-sac. 



era. endosperm. 



fu. funicle. 



f.w. frayed walls of broken-down lining 



cells. 



fv.b. fibro-vascular bundle. 



j'v.b.e. fibro-vascular bundle in endo- 

 sperm. 



hy. hypostase. 



in. integument. 



inv. invagination. 



l.i. large oells in integument. 



lig. obliquely placed cells with lignum! 



walls. 



lin. cells lining cavity of ovary. 



m. micropyle. 



n. nucleus, 



raw. nucellus. 



o.c. ovary-cavity. 



o.w. ovary-wall. 



p. phloem. 



par. parenchyma cells. 



s. sepal. 



st. stigmatic surfaces. 



t.s. tissue of style. 



xy. xylem. 



