- Project Runeberg -  Svensk botanisk tidskrift / Band 14. 1920 /
280

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266

Further work on pollen formation in this family is contemplated,
material of quite a number of species, belonging to the main sub-
families, having been collected.

Araceae.

To the already known instances of successiv biparlition, two
new ones are added:

Microcasia pygmaea Becc. and

Pothos spec.

These new examples of bipartition are from sections of the family
in question from where we had no records before.

Cyclanthaceae.

No previous record of the pollen formation in this family seems,
as far as I know, to have been published. Hitherto I have been
able to investigate

Carludovica macropoda Kurz.

In view of the systematic position of this family it is certainly
of interest that a quite typical successiv bipartition occurs in Car-
ludovica.

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