having either two cells separated by a partition penetrated by a connecting tube, or else a single cell with a constriction in the middle.
ΚΠ
1921 A. L. SmithLichens 422 In such a phylum as the Physciaceæ (with colourless polarilocular spores) there is a clear example of a closely connected series.
1981 New Phytologist89 668Polarilocular spores are known only from lichens.