Origin of Dryopteris shibipedis (Dryopteridaceae), a fern species extinct in the wild


Dryopteris shibipedis was once treated as an extinct species in the Red List (2007) by the Japanese Ministry of the Environment, but ‘rediscovered’ in the Tsukuba Botanical Garden. To clarify its origin, using ‘overlooked’ cultivated stocks we analyzed nuclear PgiC intron sequences. As the PgiC genotype of D. shibipedis can be explained by a combination of alleles of D. kinkiensis and those of D. pacifica, the hypothesis of hybrid origin of the species is supported.

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The authors thank K. Abe, Y. Hirayama, C. Tsutsumi, K. Uno and K. Yamada for their assistance of molecular analysis and spore cultivation, and also thank K. Kawahara and M. Otomasu for providing living materials.

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Correspondence to Atsushi Ebihara.

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Ebihara, A., Matsumoto, S. & Kato, M. Origin of Dryopteris shibipedis (Dryopteridaceae), a fern species extinct in the wild. J Plant Res 125, 499–505 (2012). https://doi.org/10.1007/s10265-012-0474-x

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  • Apogamy
  • Dryopteris
  • Extinct species
  • Hybrid
  • PgiC