Systematic significance of stipe anatomy of Pteris L. (Pteridaceae) from Southwestern Nigeria

  • Rachael A. BAMIGBOYE Obafemi Awolowo University, Natural History Museum, Ile-Ife
  • Fatai A. OLOYEDE Obafemi Awolowo University, Department of Botany, Ile-Ife
  • Akinwumi J. AKINLOYE Obafemi Awolowo University, Department of Botany, Ile-Ife
Keywords: anatomy; Pteris L.; taxonomy; stipe; vascular bundles

Abstract

Stipe anatomy of seven Pteris species collected from various locations in the Southwestern Nigeria was investigated. This was with a view to identify characters of the stipe anatomy that are important in delimiting the species. Transverse sections (TS) of stipe at proximal median and distal regions were cut with the aid of a Reichert Austria sledge microtome at 10 µ thickness. Sections were stained in Safranin O for five minutes, rinsed in three successive changes of water and counterstained in Alcian blue for five minutes. The counterstained sections were rinsed in three changes of water, and then treated in serial grades of alcohol. Observation of prepared slides was made under light microscope. Based on the shape of the vascular bundles, the Pteris species fall into three categories   which are inverted Omega, V or U shapes. The adaxial grooves varied from proximal to distal regions in all the species except in P. ensiformis where it was uniform throughout the regions.

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Published
2020-03-31
How to Cite
BAMIGBOYE, R. A., OLOYEDE, F. A., & AKINLOYE, A. J. (2020). Systematic significance of stipe anatomy of Pteris L. (Pteridaceae) from Southwestern Nigeria. Notulae Scientia Biologicae, 12(1), 1-13. https://doi.org/10.15835/nsb12110644
Section
Research articles