Pammel — Anatomical Characters of Seeds of Leguminosae. 179 



Nutrient. In most parts of the seed this layer follows the 

 epidermis ; it is much compressed, the cells are thin-walled and 

 elongated. Vascular elements abundant in this layer. The 

 thick-walled pigment layer and the mycotic are absent. 



JEndosperm. A single row of thick-walled cells, the aleu- 

 rone, occurs especially in the hilar region. Cells contain 

 protein. 



Emhryo. The epidermal cells below the endosperm are 

 mostly isodiametric followed by more loosely arranged cells 

 with thinner walls; the internal part of the cotyledons, with 

 an epidermis similar to that of the outer part, having several 

 rows of palisade cells. Cells contain an abundance of fat 

 and protem. — (Fla., A. S. Hitchcock, Mo. Bot. Gard.) 



ZoRNiA, J. F. Gmel. 



The testa of this genus is very different from that of Ara- 

 chis, Slylosanthes, and Chapmannia. Even before making a 

 section, the hardness of the testa is evident. The genus is 

 allied to Desmodiutn and Lespedeza rather than to the other 

 members of the subtribe. 



ZORNIA BRACTEATA, J. F. Gmel. 



Mdlpighian. Cells nearly half as long as the remainder 

 of the testa, thick-walled. Cuticle evident; cells with longi- 

 tudinal pore-canals; cuticularized layer inconspicuous; light 

 line near the cuticularized layer. Cells carry some pigment. 



Osteosclerid. Cells I-shaped, with large intercellular spaces ; 

 they contain a great deal of pigment. 



Nutrient. Layer compressed, consisting of four or five 

 rows of pigmented cells. 



Endosperm. Reduced to a single row of cells, the aleu- 

 rone. 



Emhyro. Epidermal cells smaller than the parenchyma 

 cells below, isodiametric ; the palisade cells smaller than the 

 underlying parenchyma, narrow and in two to three rows. 

 The procambial bundles are small. Reserve material consists 

 of fat and protein. Starch is absent. 



