Pammel — Anatomical Characters of Seeds of Leguminosae. 189 



upper consists of large cells with comparatively thin walls ; 

 the lower of small cells with thin walls. 



Embryo, The epidermal cells are much smaller than the 

 underlying parenchyma. The walls of the parenchyma are 

 provided with pore-canals. The cells contain an abundance 

 of spherical or elliptical starch grains and protein. Starch 

 grains color blue with iodine, and the protein grains brownish. 

 Starch grains vary from 16X22-56X10-22x16 m. 



Lens, Tourn. 



Harzjinhis Samenkunde,and Tschirch and Oesterle describe 

 the microscopical characters of the lentil. The testa in some 

 varieties is variously colored, in others yellowish-brown. 

 Endosperm is reduced to a single row of cells, the aleurone 

 layer. Starch is abundant in the starch layer. 



Lens esculenta, Moench. 



PI. XXXIII. f. 3-3h. 



Testa 190-200 /^ thick, minutely roughened, the endosperm 

 reduced. 



Malpighian. Cells 40-45 /^long, slightly irregular on the 

 surface as in the seeds of Lathyrus; light line in the upper 

 part of the cell; lower part of the cell dark in color. 



Osteosclerid. Cells 20-25 jm long, I-shaped only towards 

 the hilum, otherwise nearly square, separated by wide 

 intercellular spaces. 



Nutrient, Parenchyma cells of the nutrient layer thin- 

 walled ; lower part more compressed than the upper. This 

 layer contains the pigment. 



Endosperm, Wanting except a single row of cells, the 

 aleurone layer. 



Embryo. The epidermal cells of the cotyledons small ; the 

 cells of the second row larger and containing less starch ; the 

 underlying parenchyma relatively thick-walled with pore- 

 canals ; the epidermal cells of the superior face are similar to 

 those of the inner surface. Large starch grains abundant, 

 with prominent rifts; they vary from 5X6-11X16-28X11/X. 

 Green pigment is present in the cotyledons, as well as large 

 procambial vessels, which are yellowish in color. 



