380 BOTANICAL GAZETTE [NOVEMBER 
Fic. 29.—Median longitudinal section similar. to fig. 28: ct, cotyledonary 
traces; cp, caplike tissue; s, suspensor. X30 
Fic. 30.—Cross-section of young seedling at region of union of cotyledonary 
trace with vascular cylinder: ct, cotyledonary traces belonging to one cotyledon. 
X16. 
Fic. 31.—Section of same further up to show girdling: L2, outer long girdle; 
L4, outer 7 OM girdle; L2, L3, inner girdles; all of second tat X16. 
Fics. 32, 33.—Cross-sections of embryo at region of vascular plate (up); 
px, protoxylem; x, xylem; ph, phloem; union of cotyledonary traces two by 
two, and union of resultants with vascular plate at protoxylem groups. X30. 
Fic. 34.—Median longitudinal section of seedling three years old: pc, pro- 
ri pea lig, girdle; Jt, trace; lg, leaf gap. X30. 
_ Fic. 35.—Cross-section of aetayo to show early appearance of girdle; pc, 
procambium; /ig', girdle of very young leaf; /tg, girdle of next older leaf. X30. 
The black spots in all the photographs are mucilage cavities or cells. 
