A Comparative Study of Spore Morphology of Some Pteridoideae Subfamily Genera

DOI : http://dx.doi.org/10.13005/bbra/1435

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Using the method of scanning electronic microscopy (SEM), a comparative study of ten representatives of subfamily Pteridoideae C.Chr. ex Crabbe, Jermy & Mickel family Pteridaceae E.D.M.Kirchn. was carried out. A comparative study of morphological characters of investigated spores has revealed characters that allow considering the relatedness of the studied species to one subfamily – Pteridoideae. Those characters include spore form – triangular-roundish, laesura rays are straight, merged into sporoderm (laesura lips), tubercles on the spore surface, and in some cases “cerebriform” folds, exosporium surface without excrescences. For species of the genera Afropteris and Taenitis, we described characters that allow considering them apart from the complex of characters belonging to the species of genera Actiniopteris, Anopteris, Onychium, Jamesonia and Pteris.

subfamily Pteridoideae; family Pteridaceae; Actiniopteris; Jamesonia; Onychium; Pteris; Anopteris; Afropteris; Taenitis; morphology of the spores; scanning electronic microscopy (SEM)