期刊
PHYTOKEYS
卷 -, 期 194, 页码 1-13出版社
PENSOFT PUBLISHERS
DOI: 10.3897/phytokeys.194.80129
关键词
Indochina; morphology; molecular phylogeny; taxonomy; Tectaria crenata
资金
- National Natural Science Foundation of China [31670203]
This study describes a new fern species, Tectaria danangensis, from Vietnam, which was previously misidentified as T. crenata. Through morphological characteristics and phylogenetic analysis, it is found that T. danangensis has a close affinity to T. harlandii and is an intermediate species between T. harlandii and T. poilanei.
A new fern species, Tectaria danangensis (Tectariaceae) from Vietnam, which had long been misreported as T. crenata, is described and illustrated. The new species resembles T. poilanei, a species long neglected in the fern flora of Indochina, in the frond shape and sori arrangement, but differs by its irregularly 2-rowed sori (versus regularly 2-rowed, distantly and evenly arranged) between lateral veins of pinnae, fronds being more or less dimorphic (versus monomorphic) and basal pinnae each with a base-joined (versus free) lobe. Phylogenetic analyses of five plastid regions (atpB, ndhF+ ndhF-trnN, rbcL, rps16-matK+ matK and trnL-F) suggested T. danangensis has a close affinity to T. harlandii. Tectaria danangensis appears to be an intermediate species between T. harlandii and T. poilanei.
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