<abstract xmlns="http://www.w3.org/1999/xhtml"><p><italic>Pteridium aquilinum</italic> subsp. <italic>pinetorum</italic> is one of two morphologically distinct taxa of the genus <italic>Pteridium</italic> identified in Poland. In order to confirm their distinctively recognizable morphology, nine features defining each of these taxa were subjected to a morphometric analysis. These features, including taxonomic characters of vegetative structures, were measured or counted for their most comprehensive descriptions. The measurements were also expressed as ratios of two characters (length of the first and second pairs of leaflets) to prevent the size of fronds from influencing the results. Unique features of bracken, such as: frond and pinnae shape and orientation; basal pinna structure; ultimate segment of pinnae and pinnula shape and size; frond expansion sequencing; frond lamina texture, shape and pubescence were treated descriptively. Canonical discriminant analysis was employed for a morphometric study of quantitative characters. On their basis, two taxa – <italic>P. aquilinum</italic> subsp. <italic>aquilinum</italic> and <italic>P. a.</italic> subsp. <italic>pinetorum</italic> were determined.</p></abstract>

Pteridium aquilinum subsp. pinetorum is one of two morphologically distinct taxa of the genus Pteridium identified in Poland. In order to confirm their distinctively recognizable morphology, nine features defining each of these taxa were subjected to a morphometric analysis. These features, including taxonomic characters of vegetative structures, were measured or counted for their most comprehensive descriptions. The measurements were also expressed as ratios of two characters (length of the first and second pairs of leaflets) to prevent the size of fronds from influencing the results. Unique features of bracken, such as: frond and pinnae shape and orientation; basal pinna structure; ultimate segment of pinnae and pinnula shape and size; frond expansion sequencing; frond lamina texture, shape and pubescence were treated descriptively. Canonical discriminant analysis was employed for a morphometric study of quantitative characters. On their basis, two taxa – P. aquilinum subsp. aquilinum and P. a. subsp. pinetorum were determined.

Application of morphometric study to discriminate <italic>Pteridium aquilinum</italic> (L.) Kuhn subsp. <italic>pinetorum</italic> (C. N. Page &amp; R. R. Mill 1995) J. A. Thomson in Poland

Department of General Botany, Institute of Experimental Biology, Faculty of Biology

Department of Human Evolutionary Biology, Institute of Human Biology and Evolution, Faculty of Biology

Biodiversity Research and Conservation

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of morphometric study to discriminate  (L.) Kuhn subsp.  (C. N. Page & R. R. Mill 1995) J. A. Thomson in Poland

Pteridium aquilinum subsp. pinetorum is one of two morphologically distinct taxa of the genus Pteridium identified in Poland. In order to confirm their...

Application of morphometric study to discriminate Pteridium aquilinum (L.) Kuhn subsp. pinetorum (C. N. Page & R. R. Mill 1995) J. A. Thomson in Poland

Published Online: Mar 12, 2020

Page range: 1 - 12

Received: Nov 14, 2019

Accepted: Dec 31, 2019

DOI: https://doi.org/10.2478/biorc-2019-0015

Keywords
morphometric study, canonical discriminant analysis

© 2019 Elżbieta Zenkteler et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of morphometric study to discriminate Pteridium aquilinum (L.) Kuhn subsp. pinetorum (C. N. Page & R. R. Mill 1995) J. A. Thomson in Poland

Published Online: Mar 12, 2020

Page range: 1 - 12

Received: Nov 14, 2019

Accepted: Dec 31, 2019

DOI: https://doi.org/10.2478/biorc-2019-0015

Keywordsmorphometric study, canonical discriminant analysis

© 2019 Elżbieta Zenkteler et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
morphometric study, canonical discriminant analysis