372 BOTANICAL GAZETTE [NOVEMBER 
EXPLANATION OF PLATES VIII-X 
PLATE VIII 
All figures drawn on the same scale, which is indicated by the measured 
line; drawings made by means of a vertical projecting lantern from the stained 
sections. 
Fig. 1.—Dormant embryo in endosperm; 7, remnant of inner integument. 
Fic. 2.—Embryo about December 1, still within seed; s, position of stem 
apex; ¢, endosperm. 
- Fic. 3.—Descending tip of seedling; stem apex in slit at a. 
Fic. 3a.—Cross-section of seedling at line a—b of fig. 3. 
Fic. 4.—Tip of cotyledon in longitudinal section, showing haustorial cells . 
(A) and vascular cells (z). 
Fic. 5.—Cross-section of cotyledon; v, vascular bundles; s, stomata. 
Fics. 6-13.—Stages in the development of the dropper about the stem 
apex (s). 
Fics. 11, 12,—Two sections of the same dropper, showing scale leaf () 
and stem apex (s); #, plumule trace. ; 
IG. 13.—Stem apex as terminal bud in tip of active dropper, as in April. 
PLATE IX 
Magnification the same as in plate VIII, except in figs. 21, 22, 23, 25; in 
which the magnification is indicated. 
Fic. 14.—Stem apex in late June at bottom of bulb. 
is 15.—Stem apex (s) and rudiment of foliage leaf (/) in July 
16-20.—Cross-sections of young dropper, from base ‘a cotyledon 
sian showing hypocotyl region (1 7), separation of root and dropper 
(18), and dome of stem apex (20). 
Fics. 21, 22.—Cross-sections of active and dead root steles; @, endodermis; 
250. 
Fic. 23.—Active runner marked to show zone of maximum elongation after 
three weeks’ growth; natural size. d 
Fic. 24.—Base of bulb, showing sheathing petiole (p), stem apex (s), am 
root rudiment (r), as found August r. 
Fic. 25.—Outline of stem apex in flowering bulb, showing flower rudiment 
(f) inclosed by the foliage leaves (/) and the location of the renewal bud (8); 
XI. 
Fic. 26.—Renewal bud from the same section showing apical 
and root rudiment below the scale; July 1. 
Fic. 27.—The same structures about August 1, on the same scale. 
dome above 
PLATE X 
Figs. 28, 28a, doing 5 pes ed opr ae the same as in previous figures; 
figs. 29-33, 36 as indica 
