Corresponding author: Xian-Chun Zhang (
Academic editor: A. Troia
Wu Y-D, Zhang H-R, Zhang X-C (2017)
Morphology characters were examined from the dried herbarium specimens studied from PE (herbaria acronyms according to
We downloaded 60 sequences ITS and
The ILD test results showed no obvious conflict existing between the two datasets,
The 50% majority rule consensus tree derived from maximum likelihood showing the position of
The molecular evidence showed that two samples of
Our phylogenetic analyses and morphological evidence reveal that the possible new taxon
The new species is similar to
China, Guangxi: Pingxiang, Mt. Daqingshan, alt. 600m, 27 Aug 1986,
Type of
Widely distributed in southern China (Guangxi and Hainan) and northern Vietnam around the Gulf of Tonkin (Beibu Gulf), growing in evergreen broad–leaved forests at 250 to 1000 m a.s.l. (Figures
The specific epithet “
We evaluated the conservation status of
Distribution map of
1 | Sporophylls dimorphic, dorsal sporophylls longer than ventral ones; megaspores reddish brown |
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– | Sporophylls monomorphic, dorsal sporophylls the same length as the ventral ones; megaspores whitish | |
2 | Ventral leaf upper surfaces glabrous; basiscopic base slightly dilated; microspores yellow-orange |
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– | Ventral leaf upper surfaces scabrous; basiscopic base entire; microspore pale yellow | |
3 | Leaves with obvious white margin (three cells wide); ventral leaves scabrous on upper surfaces only on the basiscopic halves (rarely also on upper halves); axillary leaves ovate |
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– | Leaves without obvious white margin (only one cell wide); ventral leaves scabrous on upper surfaces throughout the leaf surface; axillary leaves narrowly ovate to triangular |
|
This study was supported by the National Natural Science Foundation of China (31670205). We would like to thank the three reviewers for their valuable comments and suggestions.
Plant materials used in this study. Information is presented in the following order: taxon name, locality (if available), collection number (if available), ITS GenBank accession number,