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42 Rhodora [Marcu 
linear to oblong in form, measuring about 4 X 1 mm. (fig. 1). Those 
of the abnormal flowers were broadly obovate and obcordate at the 
apex, measuring 3.2 X 3.0 mm. (fig. 2). In shape and vein-arrange- 
ment they closely resemble a leaflet of a foliage leaf (fig. 3). Sepals 
of this form occurred in all the abnormal flowers regardless of other 
peculiarities that were exhibited. 
The sepals of abnormal flowers are pubescent on the back with 
appressed hairs as in normal flowers, the hairs being mostly of the uni- 
cellular, thick-walled type, as described by Hus (07:102). They differ 
from foliage leaves in the amount of pubescence, that on the leaves 
being rather sparse and confined to the under side. The cells of the 
sepals of abnormal flowers are less elongated than in normal flowers 
but never as nearly isodiametric as those of the leaves so that the 
sepals of the abnormal flowers, while strongly suggesting foliage leaves 
in outline and arrangement of veins, still retain a closer resemblance 
to normal sepals in the amount and kind of pubescence and in cell- 
characters. 
The petals were not uniform in shape in all the abnormal specimens. 
Instead of being obovate to obcuneate and yellow as in normal speci- 
mens (fig. 4), most of them were reduced to narrow, linear or oblong, 
pale yellow or whitish structures. One of the most extreme forms is 
shown in figure 6. This specimen had petals which were nearly 
orbicular, about 3 mm., in diameter and with a slender claw of about 
the same length. Others varied between the linear petals (fig. 5) and 
the normal shape (fig. 4). 
The vein-arrangement and shape of cells in petals of the abnormal 
specimens were similar to those of normal ones except that the epi- 
dermal cells at the tips of the petals did not have the ridges projecting 
into the cell as is true of the epidermal cells at the tips of normal petals. 
The stamens as in normal flowers, were of two lengths, the inner 
series being the longer. They differed from stamens of normal 
flowers however, in that in all cases they were separate instead of 
monadelphous. In some specimens the stamens were apparently 
normal except for being separate. In others the anthers of the inner 
series were either poorly developed or entirely wanting. The anthers 
of the outer series were apparently normal. In one specimen part of 
the stamens had been transformed into narrow, petaloid structures. 
No examination of the pollen from any of the specimens was made. 
The pistil showed the most varied and peculiar structures. In 
