Phylogenetic Relationships of the Enigmatic Malesian Fern Thylacopteris (Polypodiaceae, Polypodiidae)

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Issue Date
2004-11-01Author
Schneider, Harald
Janssen, Thomas
Hovenkamp, Peter H.
Smith, Alan R.
Cranfill, Raymond
Haufler, Christopher H.
Ranker, Thomas A.
Publisher
University of Chicago Press
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
© 2004 by The University of Chicago.
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Show full item recordAbstract
Thylacopteris is the sister to a diverse clade of polygrammoid ferns that occurs mainly in Southeast Asia and Malesia. The phylogenetic relationships are inferred from DNA sequences of three chloroplast genome regions (rbcL, rps4, rps4‐trnS IGS) for 62 taxa and a fourth cpDNA sequence (trnL‐trnF IGS) for 35 taxa. The results refute previously proposed close relationships to Polypodium s.s. but support suggested relationships to the Southeast Asiatic genus Goniophlebium. In all phylogenetic reconstructions based on more than one cpDNA region, we recovered Thylacopteris as sister to a clade in which Goniophlebium is in turn sister to several lineages, including the genera Lecanopteris, Lepisorus, Microsorum, and their relatives. Goniophlebium and allies comprise a significant component of vascular fern epiphytes in the rain forests of Southeast Asia and Malesia. The relationships of the genus Thylacopteris as at the base of the clade comprising the genera Goniophlebium, Lecanopteris, Lepisorus, Microsorum, and their relatives indicate that this entire lineage arose in Malesia and subsequently dispersed to continental Asia, Australia, the Pacific, and Africa.
ISSN
1058-5893Collections
Citation
Schneider, Harald et al. (2004). "Phylogenetic Relationships of the Enigmatic Malesian Fern Thylacopteris (Polypodiaceae, Polypodiidae)." International Journal of Plant Science, 165(6):1077-1087. http://www.dx.doi.org/10.1086/423882
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