Leaf colour patterns, vegetative and sexual reproduction of Episcia ...

Figure 26 Episcia lilacina; schematic drawing of the flower and the parts measured; left: flower in fronted view; upper
right: flower in male stage; bottom right: flower in female stage; the arrows indicate the narrowest and widest parts of
the tube.
Materials and Methods: For measurements a calliper rule was used. The length of stamina
was measured in the male stage, the style length in the female stage. 25 flowers from eight
different localities were investigated.
Results: All measured values are listed in table 1. The entrance to the tube is very narrow just
like the narrowest part of tube. In fact, the entrance is narrower but higher than the narrowest
part. Immediately after the entrance the tube widens noticeably. Here the widest part of the tube
is located. Shortly before the ovary and the basis of stamina the tube narrows up once more as
shown in figure 26. Using the measurements to calculate the cross sectional area, the entrance has
an area of 13,7 mm², the narrowest part 13,2 mm² and the widest part 26,2 mm².
The sum of the length of style and the height of ovary equals the length of stamina. The
range in measurements of the length of stamina is considerable, but is equally present with the
measurements of length of corolla tube and length of style.
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