File:S10265-023-01448-6.pdf
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DescriptionS10265-023-01448-6.pdf |
English: The systematics of the Old World Spiranthes sinensis (Pers.) Ames species complex (Orchidaceae) has been complicated by its wide distribution and morphological variations. Within the species complex, S. australis Lindl. has been generally accepted as the only Spiranthes Rich. species distributed on the Japanese mainland. The present study provides morphological, phylogenetic, and ecological evidence for the recognition of S. hachijoensis Suetsugu as a new species of the S. sinensis species complex on the Japanese mainland. Spiranthes hachijoensis is morphologically similar to S. hongkongensis S.Y. Hu & Barretto and S. nivea T.P. Lin & W.M. Lin, sharing a degenerated rostellum, pollinia without a viscidium, and distinctly trilobed stigma. However, the taxon can be morphologically distinguished from S. hongkongensis by its glabrous rachis, ovaries, and sepals, and from S. nivea by its papillate labellum disc, larger papillate basal labellum callosities, and glabrous rachis, ovaries, and sepals. The autogamy and flowering phenology (i.e., earlier flowering) of S. hachijoensis are most likely responsible for premating isolation from the sympatric S. australis. A MIG-seq-based high-throughput molecular analysis indicated that the genetic difference between S. hachijoensis and its putative sister species S. sinensis is comparable to, or even greater than, the genetic difference between pairs of other species within the S. sinensis species complex. Our multifaceted approach strongly supports the recognition of S. hachijoensis as a morphologically, phenologically, phylogenetically, and ecologically distinct species. |
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https://link.springer.com/article/10.1007/s10265-023-01448-6 https://doi.org/10.1007/s10265-023-01448-6 |
Author | Suetsugu, K., Hirota, S.K., Hayakawa, H. et al. |
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current | 08:05, 24 March 2023 | 1,239 × 1,645, 16 pages (3.64 MB) | Pamputt (talk | contribs) | Uploaded a work by Suetsugu, K., Hirota, S.K., Hayakawa, H. et al. from https://link.springer.com/article/10.1007/s10265-023-01448-6 https://doi.org/10.1007/s10265-023-01448-6 with UploadWizard |
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Publisher | Springer Nature Singapore |
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Date and time of digitizing | 13:16, 22 March 2023 |
Software used | Springer |
File change date and time | 13:18, 22 March 2023 |
Date metadata was last modified | 13:18, 22 March 2023 |
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Identifier | https://doi.org/10.1007/s10265-023-01448-6 |
Conversion program | Acrobat Distiller 10.1.8 (Windows) |
Encrypted | no |
Page size | 595.276 x 790.866 pts |
Version of PDF format | 1.4 |