A new hybrid horsetail Equisetum × lofotense ( E. arvense × E. sylvaticum, Equisetaceae) from Norway

On the Island of Austvågøya (Lofoten, Norway), a new hybrid horsetail ( E. arvense × E. sylvaticum ) was found, which is described as E .× lofotense . Its macro‐ and micro‐morphological characters are discussed and compared with the similar hybrid E. × mildeanum ( E. pratense × E. sylvaticum ) with...

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Bibliographic Details
Published in:Nordic Journal of Botany
Main Author: Lubienski, Marcus
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2010
Subjects:
Plant Science
Ecology, Evolution, Behavior and Systematics
Austvågøya
Lofoten
Norway
Online Access:http://dx.doi.org/10.1111/j.1756-1051.2010.00806.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1756-1051.2010.00806.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1756-1051.2010.00806.x
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Summary:On the Island of Austvågøya (Lofoten, Norway), a new hybrid horsetail ( E. arvense × E. sylvaticum ) was found, which is described as E .× lofotense . Its macro‐ and micro‐morphological characters are discussed and compared with the similar hybrid E. × mildeanum ( E. pratense × E. sylvaticum ) with which it shares the E. sylvaticum parentage. The hybrid nature is verified by its completely aborted spores, and the micro‐morphology of the stem ridges and stomata, illustrated by SEM images, confirm the proposed origin. An overview of all known hybrids in the genus Equisetum is given and critically commented. It becomes evident that in subgenus Equisetum E. arvense is the species most frequently involved in hybridization events.

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