Pammel — Anatomical Characters of Seeds of Leguminosae. 171 



Nutrient. The layer is compressed; the cells are thin- 

 walled, elongated, and contain pigment and protein. Walls 

 color pale blue with chlor-iodide of zinc. 



Endosperm. Aleurone cells thick-walled with the pore- 

 canals slightly irregular. The cells are larger than in Aeschy- 

 nomene or Astragalus. In most parts of the seed the aleu- 

 rone is the extent of the endosperm ; laterally, however, more 

 endosperm occurs, and here it is mucilaginous. Walls color 

 blue with chlor-iodide of zinc. Cells contain fat and protein. 



Embryo. The cells of the first row smaller and nearly 

 isodiametric, the exterior walls thickened; cells below larger, 

 longer than wide. The walls color blue with chlor-iodide 

 of zinc. The cells contain an abundance of fat and protein. 

 On the addition of iodine a few elliptical or spherical starch 

 grains may be seen. On the addition of chlor-iodide of zinc 

 a great many more grains are colored. — (Wyoming, Nelson, 

 Mo. Bot. Gard.) 



Desmodium, Desv. (Meibomia, Adans.) 



Malpighian cells carry pigment in variable amounts. Os- 

 teosclerids are of the characteristic I-shape. Chalon studied 

 several species with reference to endosperm, finding it present 

 in D. Jloribundum, G. Don., D. canadense, DC, D. gyrans, 

 DC, D. incanumy DC, D. lalifolium, DC, D. gangelicum^ 

 DC, D' uncinatutn, DC,D. ti'iquetrum, DC, and D. umbel- 

 latum, DC All of the species which I have examined contain 

 endosperm, e. ^., D. nudijlorum, DC, D. canescens, DC, D. 

 strictum.., DC, and D. Dillenii, Darl. Lubbock studied the 

 germination of D. canadense. but does not describe the seed. 



Desmodium canescens, DC {M. canescensyh., Kuntze.) 



Pl.XV.f. 3a. 



Testa and endosperm 140-150 /i thick. The testa is 

 uniform but the endosperm is variable. 



Malpighian. Cells 50-52//, in length. Cuticle uneven; 

 cuticularized layer narrow; light line runs close under the 

 cuticularized layer; several pore-canals extend into the 

 wall below the light line, which connect in part with the cell- 

 cavity. The ceU-cavity is large at the base but narrows rather 

 abruptly, and in upper part occurs as a narrow cavity to the 



