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Spore Morphology and Cytology of Isoetes Azorica (Pteridophyta Isoetaceae) and ITS Affinity with North America

Publication Type:Journal Article
Year of Publication:1996
Authors:D. M. Britton, Brunton D. F.
Journal:Fern Gazette
Pagination:113 - 118
Date Published:1996///
Keywords:Cytology, Isoetes azorica, Phytogeography, Spore morphology

Isoetes azorica is an endemic of shallow, oligotrophic lakes in the Azores Islands. Cytological investigations determine it to be tetraploid (2n=44). Morphological studies indicate that it shares many characteristics with the North American tetraploid I, tuckermanii. The spore morphology of both species is illustrated by SEM and their degree of similarity discussed. The apparently close affinity between these two taxa is consistent with phytogeographic patterns noted with few other pteridophytes of this region.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith