Pammel — Anatomical Characters of Seeds of Legummosae. 215 



OsteoscJerid . The cells are 12-14 u long, I-shaped and 

 thick-walled. Cell-cavity small. Cells contain sonae pigment 

 and tannin, color reddish with potassium hydrate. 



N^utrienl. This layer is much compressed, consisting of a 

 few to sixteen rows of thick-walled cells ; differentiated into 

 two parts, cells of the upper part thicker-walled than the 

 lower, containing more pigment than the thin-walled lower 

 parenchyma. Cells contain some protein matter. 



E ndosj^erm . Aleurone layer forms a continuous row of 

 thick-walled cells with an abundance of protein ; the mucil- 

 aginous reserve cellulose thick* walled, with small pore-canals; 

 the internal part of the endosperm consists of narrow, elon- 

 gated thick-walled cells with a small lumen. The cells contain 

 some protein but not nearly as much as the middle mucilagiuous 

 portion. 



Embryo. Epidermal cells are much smaller than those be- 

 low, in some cases nearly isodiametric, others 8.4X9.8 //vary- 

 ing to 9.8X15 fjL long. Exterior walls thickened; cells below 

 much longer and more loosely arranged, 35-42 // long. All of 

 the cells contain an abundance of fat and protein but no starch, 

 also stellate compound crystals of oxalate of lime. 



ScHRANKiA Willd. {Morongia, Britton.) 



ScHRANKiA UNCiNATA, Willd. {M. uncinata, Willd., Britton. ) 



PI. XV in. f. 5. 



Testa and endosperm 85-100// thick. 



Maljnghian. The cells are 45-49 n long. Strongly de- 

 veloped cuticle; a well developed cuticularized layer; the 

 latter when treated with potash takes on a straw or brownish 

 color. Cuticularized layer and the cuticle separate easily 

 from the remainder of the cells; light line a little above the 

 middle; the numerous pore-canals occur below the cuticularized 

 layer and project into the walls below the light line ; cell- 

 cavity large at the base, narrowed rather abruptly. Cells 

 contain an abundance of tannin and some protein matter. 



Osteosclerid. The cells are thick-walled, 15-16 /a long. 

 Cavity very much reduced, containing pigment and tannin. 



Nutrient. Walls of the cells thickened, slightly colored; 

 containing an abundance of pigment and tannin. 



