March, 1905.] 
Ohio Plants with Tencb-ils. 
305 
daughter nuclei had travelled to the antipodal region just as 
Schaffner finds to be the case in Sagittaria, Bot. Gaz. 23: 252- 
272, and ]\Iiss Burr in Vallisneria. In the case of Philotria how- 
ever. no definite wall was found cutting this nucleus off from the 
rest of the embrvo sac. While Wylie .seems to indicate in PI. II, 
figs. 35-30 that there is fusion of the second sperm nucleus with 
the definitive nucleus it seems difficult to account for the extra 
nucleus in the antipodal region unless there had already been a 
division of the defiinitve nucleus or the polar nuclei had failed to 
conjugate, for in the slides which the writer examined the polar 
nuclei were in close contact long before fertilization and the 
antipodals were too vescicular to indicate the possibility of any 
further activity. 
The synergidse stained quite characteristically so that they 
were easily distinguished from the other nuclei in the embrvo sac. 
The pollen grains showed distinctly the tube nucleus and the 
crescentic sperm nuclei connected by a slender filament of cyto- 
plasm while the four members of the tetrad still remained in close 
contact. 
OHIO PLANTS WITH TENDRILS. 
Op.\l I. Till:«.-\x. 
Tendril plants are for the greater part, plants of the tropics, 
where the vegetation is so dense that the plants have developed 
such organs by means of which they are brought to a more favor- 
able position with respect to light. The tendrils attach them- 
selves to supports and thus bring the plant to an upright position 
or aid it in climbing over various objects. In the different species 
the tendrils morphologically represent different parts of the plant 
and this furnishes a basis of classification. Some tendrils attach 
themselves by twining entirely around the support, others as the 
Virginia Creeper, attach themselves by means of little discs with 
adhesive surfaces developed at the tips of the tendril. The 
tendril usually grows straight until the tip touches some object 
of support around which it hooks to secure a firm hold, then it 
shortens usually by coiling in a double spiral. 
All tendril plants may be divided into two main divisions: 
first the leaf climbers, and second the shoot or branch climbers. 
Each of these main divisions may be subdivided depending upon 
the degree of development. 
In the leaf tendrils the entire leaf, terminal leaflet, petiole, or 
petiolule or other parts may be modified into the tendril. There 
are five families in Ohio which have plants belonging to this 
group with twenty-three species. 
In the S.\iiL.\CE.^: the two tendrils are located on either side 
of the base of the petiole, which presists, the blade being cast off 
