Two new species in the fern genus Lomariopsis (Lomariopsidaceae) from East Asia

Yi-Hsuan Wu (1) , Chih-Yun Sun (1) , Atsushi Ebihara (2) , Ngan Thi Lu (3) , Germinal Rouhan (4) , Li-Yaung Kuo (1)

1 NTHU - National Tsing Hua University [Hsinchu]
2 National Museum of Nature and Science
3 VAST - Vietnam Academy of Science and Technology
4 ISYEB - Institut de Systématique, Evolution, Biodiversité

Two East Asian Lomariopsis (Lomariopsidaceae, Polypodiales) species, Lomariopsis moorei and Lomariopsis longini , which were previously misidentified as L. spectabilis , are here described as new species based on evidence from morphological characters and a molecular phylogeny. The two species differ from the three other described species in East Asia by their venation, pinna shapes, and perine morphology. A phylogeny based on a combined dataset of three chloroplast regions ( rbcL + rps4-trnS + trnL-L-F ) showed that L. moorei and L. longini each formed a well-supported monophyletic group which was distantly related to both L. spectabilis and the other morphologically similar East Asian species, L. boninensis .

Mots clés: Cryptic species; independent gametophyte; Lomariopsis boninensis; Lomariopsis longini; Lomariopsis moorei; Lomariopsis spectabilis; phylogeny; systematics

Domaines: Botanique; Systématique, phylogénie et taxonomie

Yi-Hsuan Wu, Chih-Yun Sun, Atsushi Ebihara, Ngan Thi Lu, Germinal Rouhan, et al.. Two new species in the fern genus Lomariopsis (Lomariopsidaceae) from East Asia. PhytoKeys, 2021, 187, pp.161-176. ⟨10.3897/phytokeys.187.77035⟩. ⟨mnhn-03500196⟩