320 PHARMACEUTICAL BOTANY 
Fic. 240.—Lima Bean. A, seed showing scar (hilum); B, embryo after removal 
of seed coat showing one cotyledon (cot) and caulicle (c); C, embryo after removal 
of one of the cotyledons showing the second cotyledon (cot), plumule (p), caulicle 
(c), and radicle (r); D, young seedling showing epicotyl (ep) bearing first pair of 
green leaves (/) and a terminal stem bud (4); cotyledons (c), hypocotyl (A) with first 
root (r) and rootlets (rt); E, cross section of representative portion of seed showing 
cuticle (c), palisade cells (f), column cells (4) and spongy parenchyma (sf) of 
spermoderm; epidermis (ep) and parenchyma (fa) of mesophyll of cotyledon 
(magnified). 
