a ee ee 
a ne ee ey 
1898] SOCIETY FOR PLANT MORPHOLOGY AND PHYSIOLOGY 117 
however, somewhat abnormal. Although the normal num- 
ber of cells in each was present, they were formed irregu- 
larly. The polar nucleus and first and second synergids seem to 
have been cut off successively from the mother nucleus of the 
egg. Thesynergids disappear almost immediately. A similar 
irregularity was found in the antipodals ; but the most interest- 
ing feature, perhaps, was the fact that the definitive nucleus 
cuts off a very large basal nucleus, as in Sagittaria, before endo- 
sperm formation proceeds in the upper part of the sac. 
20. Recent experiments and observations on fruit production in 
Amphicarpea: DR. ApELINE ScuIveLy, Philadelphia Normal 
School—This paper detailed the author’s recent studies on the 
hog peanut (Amphicarpea monoica). Her published observa- 
iio showed that minute aerial cleistogamous flowers, when 
buried, produced one-seeded ‘‘nuts”’ with soft fruits and seed 
Coats, instead of the two to three-seeded pods with indurated 
walls. She now showed that when purple flowers were buried 
in the bud state, while still attached to the plant or at any period 
up to the time of fertilization, perfect underground “nuts” 
matured, instead of three to four-seeded indurated pods. Various 
conclusions were drawn as to the powerful action of environ- 
mental agents in determining the size, shape, and consistence of 
the seed, the induration of its coats, and the number of seeds 
that might be produced. : 
esta a formation of cork tissue in roots of the Rosacee » Dr. 
hicece. UNTING, Philadelphia High School.—Starting from 
aa on Geum oan and G. rivale, made by Professor 
ei eee 1890, when intercellular spaces were shown to 
typical for 8 cork cells, Dr. Bunting proved this condition to be 
ee is herbaceous and shrubby species examined, but to 
‘nt in roots of arborescent species. She described the 
alternat; 
one ale of a flattened, usually pigmented layer of cells, with 
flat ar layers of rounded cells in each annual ring, the 
t : 
“ned layer being the last produced each season. Protoplasm, 
bi 
