} 
144 WEATHERWAX: MORPHOLOGY OF FLOWERS OF ZEA MAYS 
Explanation of plates 5 and 6 
PLATE 5 
Fic. 1. Male spikelet of Red Cob Cory sweet corn with one flower in anthesis, 
X12. G, glume; Pa, palea; A, anther of unopened flower; F, elongated filament of 
mature stamen; O, opening of anther; J, joint of rachilla. 
Fic. flower of Red Cob Cory sweet corn with its own palea and the 
other half of the spikelet removed, X15. G, glume; Le, lemma; F, short, thick 
filament of immature stamen; P, rudimentary pistil; Pa, base of palea that has been 
removed; L, lodicule. 
Fic. Female spikelet of Red Cob Cory, X 10. Sti, stigma; SC, stylar canal; 
Sty, asi ‘On ovary; G, glumes; J, joint of rachilla. 
1G. Female spikelet of Red Cob Cory, with floral bracts removed, X 1 
Sti, base Ba stigma; SC, stylar canal; Sty, style; Ov, ovary ici Pt Sta, shed 
tary stamen; P, pistil of aborted flower; Sta, stamen of aborted fl r; G, L, and P, 
scars a removal of glumes, lemmae, and paleae, oaararrge 
5. Tip of stigma of Red Cob Cory, showing two points and hairs for 
are! pollen, X 15. 
Fic. 6. Adaxial side of a segment of the stigma a short distance from the style, 
Tee 
Fic. 7. Same as Fic. 6 but seen from the abaxial side. 
Fic. 8. Transverse section of the stigma, X 30; the adaxial side is above. V+ 
vascular strands; H, place of attachment of hairs. 
1G. 9. Aborted lower flower of female spikelet of Red Cob Cory, X 20. Sta, 
stamen; P, pistil; L, lodicule; Pa, palea; Le, scar left by removal of lemma. 
PLATE 6 
Fic. ro. Tassel of om corn, bent sharply downward by the weight of the fruits 
that have developed in 
Fic. 11. Pairs of aie from tassel of pod corn. 
Fic. 12. Pairs of spikelets from ear of pod corn. One spikelet in each pair 
shown has two fruits. 
Fic. 13. Grains of Country Gentleman sweet corn (above), and of Stowell’s 
Evergreen (below). 
IG, Ears of sweet corn. Stowell’s Evergreen on the left, Country Gentle- 
man on the right. 
Fic. 15. Periodic pollination. This ear was bagged after a few silks had come 
out, and the bag was taken off before all the stigmas had lost their receptivity. The 
middle portion has no grains because the silks from this part passed their period of 
receptivity while the ear was protected from pollen 
Fic. 16. Ear of a yellow dent variety. The constricted place back of the tip 
is staminate in structure. 
