, PLATE 51 
A. —Georgia velvet bean. Natural size. 
B. —Cross section through hilum showing thick-walled parenchyma of the caruncle 
and the very short palisade cells of the hilar tissues. Beneath these are the palisade 
cells of the seed coat with the “light line” sinking to near the middle of the cells 
under the hilum. To right and left of the large vascular bundle consisting of scalari- 
form ducts are the lesser spiral vascular bundles of the inner seed coat. X27. 
C. —Palisade cells of seed coat, top view. X420. 
D. —Palisade cells of seed coat. The two cells on the left are from that part of the 
seed coat underlying the hilum and show the modification of the lumen that results 
in the so-called “ light line. ” Palisade cells of the seed coat are 100 to 180 fx long and 
10 to 22 fx wide. X420. 
K.—Cross section through seed coat elsewhere than at the hilum showing relation¬ 
ship of palisade cells, hour-glass cells, and the underlying parenchyma. X80. 
E. —Hour-glass cells seen from above. X420. 
G. —Hour-glass cells, side view. X420. 
H—Spirals from vascular bundles of the seed coat. X420. 
I.—Cross section of cotyledon, showing outer epidermis, and smaller cells filled with 
starch grains and proteid granules. X420. 
J-— Cross section of cotyledons, showing the medial line of the two cotyledons with 
inner epidermis an <5 adjoining much larger cells with starch grains and proteid gran¬ 
ules correspondingly larger. X420. 
