Pammel — Anatomical Characters of Seeds of Leguminosae. 209 



Embryo. First row of cells smaller; exterior walls thick- 

 ened. Cells below much larger, thinner-walled, and more 

 loosely arranged ; palisade parenchyma on the inner face. 

 The epidermal cells of -^ superior face do not differ essentially 

 from those of the lower. All of the cells contain an abun- 

 dance of fat, and protein but no starch. All of the cell- walls 

 color blue with chlor-iodide of zinc. 



HOFFMANSEGGIA DREPANOCARPA, A. Gray. 



In this species the testa and endosperm are 300 p. thick. 

 Malpighian cells 50 // long. The wide light line in upper part 

 of layer is narrower than in H. Jamesii. Cells of the nutrient 

 layer much less thickened than in Cassia. Aleurone layer 

 forms a continuous envelope around the mucilaginous endo- 

 sperm. Cell-walls of the reserve tissue differentiated into 

 primary, secondary, and tertiary thickenings. Endosperm is 

 cartilaginous but becomes mucilaginous on the addition of 

 water. The first row of cells of the cotyledons have their 

 exterior walls thickened. Cells below larger and more loosely 

 arranged, containing fat and protein. 



Gymnocladus, Lam. 



Seeds with smooth and hard testa. A large amount of 

 cartilaginous endosperm. Cells of the sclerotic parenchyma 

 of the nutrient layer in numerous rows. Inner testa as in 

 Gleditschia. Cotyledons agree with those of Gleditschia and 

 Cassia. My study of G. canadensis, made in 1885, was 

 evidently overlooked by Nadelmann, who has given an excel- 

 lent supplementary account of the structure of the coffee 

 bean. 



Gymnocladus canadensis, Lam. ( G. dioica, L.,Koch.) 



PL XXV. f. 1-1 g. 



The testa is 230-235 yu. thick. Endosperm variable in 

 thickness but easily made out with the naked eye. Histologi- 

 cally it shows a close relationship to GleditscJiia. 



Malpighian. Cells 192-196 /* long with a wide, colorless, 

 cross-striated band in the upper part; the prominent cuticu- 

 larized layer occurs below the cuticle. Below the cross- 



