384 BOTANICAL GAZETTE © [NOVEMBER 
in development. In some cases the grains were shriveled and not well 
formed, in other cases the pollen seemed to have been checked just beyond 
the tetrad stage. 
The pistillate flowers of the same plant bore no ovules, but instead of 
them there were small vegetative buds (jig. 3). These flowers were not 
clustered as usual, but were mostly in the axils of leaf-like bracts, for the 
most part being considerably separated and forming a very loose raceme. 
The styles were glandular 
at tip only. In tracing the 
development, the bud ap- 
peared very early replacing 
the ovule, and the parts of 
the flower were more length- 
ened. A rudimentary ring- 
like outgrowth appeared 
just beneath the carpel, cor- 
responding to the corolla of 
the staminate flower (jig. 
3; P) 
Fic. 1.—Vegetative buds (/) in the center of a staminate head. 
Fic. 2.—A vegetative bud (/) replacing the sterile style; s, pe oh 
Fic. 3.—A vegetative bud (J) replacing the ovule; c, carpel; ? 
corolla. 
dimentary- 
All the staminate flowers examined had styles more or ia ar corolla 
were 
In some of the marginal flowers the styles protruded beyond 
and were terminated by a disk fringed by glandular hairs. 
not formed in any specimen, but a tissue that had the appea™ 
rudimentary ovule was seen in some flowers. : 
It would appear that under the abnormal conditions eee 
primordia that usually form reproductive parts produced vegetatly 
—A. C. Lire, Shaw School of Botany, St. Louis, Mo. 
nee of 2 
