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74 MIDLAND NATURALIST. 
have found it very undesirable to give beginners any material other 
than alive or such as looks like the live stage of the plant studied. 
Laboratory of Botanical Histology 
University of Notre Dame 
Teratological Notes. 
II. AN ABNORMAL FLOWER OF CAMPANULA ROTUNDIFOLIA. 
A somewhat similar case of abnormal growth as was noted in 
the first number of the Midland Naturalist by Professor Kirsch in 
the case of Taraxacum officinale, Weber, was observed during the 
summer of 1906, in Campanula rotundifolia, L. This peculiar 
specimen of the Common Bluebell was found at Notre Dame, Ind., 
north of St. Joseph’s Lake, on a dry sunny slope of a hill. The 
extraordinary shape and size of the terminal flower of the plant 
made it an object that caught immediate attention. ‘The whole 
flowering axis of the plant was picked and ‘s now preserved in four 
per cent. formalin. 
The main stem and the peduncle of the plant from the root 
leaves to the abnormal flower at the tip, is flattened throughout and 
about one-fourth of an inch in width. Branching from this main 
axis appear at intervals a number of pedicels with normal flowers 
with five parts to their calyx and corolla. The apical abnormal 
flower is in general somewhat flattened. Its calyx is synsepalous 
and attached to the ovary the usual height as in ordinary flowers, 
but it has 32 teeth instead of the usual 5. The calyx-teeth are 
similar to those of an ordinary flower and all of equal size and per- 
fectly formed, and 28 lobes of the corolla are present, these also 
of normal appearance. On account of the large number of the 
lobes of the sympetalous corolla, the flower has rather the ap- 
pearance of a cow-bell, than an ordinary bell with the parts crimped 
and doubled in upon themselves in several places. The flower is 
perfectly full-blown and the anthers have in large part fallen 
away, adding to the difficulty of finding the exact number at 
present. The stamens must have been about 27-30. The style of 
the flower is flattened with the upper stigmatic part thickened, the 
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