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The American Midland Naturalist 
PUBLISHED BI-MONTHLY BY THE UNIVERSITY 
OF NOTRE DAME, NOTRE DAME, INDIANA. 
VOL. IV. JANUARY, 1916. HO, 
HABITS OF WATERLILY SEEDLIN 
BY J. A. NIEUWLAND. { 
[Plate XIV] a: 
During several weeks study of an abundance o phar 
and Brasenia material at Bankson Lake, Van Buren Co., Mich., 
in the late summier of 1914 and 1915 some interesting details of 
the habit of seedlings of these plants were obtained. The plants 
by their great number and peculiar response to the various 
environments to which they were subject, appeared particularly 
in congenial conditions for study of variations in development. 
Noteworthy additions to our knowledge of Nymphaea seedlings 
as to habit and method of germination were brought out by 
Conard* in his Monograph on these plants. Seedlings 
of Nymphaea tuberosa Paine, [Castalia tuberosa (Paine) Greene| 
at Bankson Lake showed conditions of growth and re- 
sponse to surroundings as were outlined by Conard, and 
the members of the white waterlily group having been 
so thoroughly treated by that author only a few notes need here 
be added regarding leaf variation of the seedling of this plant. 
Sprouting tubers of the various members of the Nymphaea group 
such as N. gigantea, N. mexicana, N. flavovirens, N. flava, N. 
elegans, N. zanzibarensis var. rosea and a hybrid have their leaves 
shown on p. 75 bringing out a remarkable variety of these sub- 
mersed members. 
These plants have two very distinctly different kinds of 
leaves. The submersed aquatic, depending upon their age or 
succession of development and the depth in the water, show 
a tendency to enlarge and become broader. Smaller forms are 
found in shallow water where the penetration of light rays is 
* Conard, H.S. The Waterlilies,a Monograph of the Genus Nymphaea 
Carn. Inst. Wash. (1905). ° 
