Abstract
The paper reports Aspidistra nigrescens, as a new species to science discovered in central Vietnam (Quang Binh Province). It provides species diagnosis, standard description, color illustrations, data about type specimens, ecology, phenology, distribution, preliminarily estimated conservation status, and notes about closely allied related species. Discovered species belongs to “A. zinaidae group”, species of which (A. erosa, A. heterocarpa, A. multiflora, and A. zinaidae) shares such characters as small, 6-morous, campanulate or urceolate flowers with dark purple to black lobes of perigone, and stamens inserted near middle of perigone tube. The group is morphologically well segregated and forms rather isolated, monophyletic, highly supported clade in molecular cladistics. An identification key of species belonging to “A. zinaidae group” is provided. Among members of this group newly discovered species morphologically is most close to A. heterocarpa sharing such particular character as cylindric, drumstick-shaped pistil hardly broadening at the base and apex.
References
- Averyanov, L. & Tillich, H.J. (2012) New taxa of Aspidistra (Asparagaceae) from central Vietnam. Turczaninowia 15 (1): 5–10.
- Averyanov, L.V. & Tillich, H.J. (2015) Aspidistra laotica, A. multiflora, A. oviflora and A. semiaperta spp. nov. (Asparagaceae, Convallariaceae s.s.) from eastern Indochina. Nordic Journal Botany 33: 366–376.
- Averyanov, L.V., Tillich, H.J., Pham, V.T., Nguyen, K.S., Le, T.A., Nguyen, H.T., Maisak, T.V., Tuan, A.H.L., Nguyen, D.D., Truong, Q.C., Nguyen, T.L.T. & Vu, T.C. (2018) New taxa and taxonomic notes in Aspidistra (Convallariaceae s.s.) in China, Laos and Vietnam. Nordic Journal of Botany 36 (7): e01833. https://doi.org/10.1111/njb.01833
- Averyanov, L.V., Tuan, A.L., Nguyen, K.S., Tillich, H.-J., Nguyen, D.D., Tuan, A.L.H., Trang, H.D., Pham, T.T.D. & Maisak, T.V. (2019) Aspidistra erosa, A. sarcantha and A. verruculosa (Asparagaceae), three new species from Vietnam. Phytotaxa 404 (3): 102–110. https://doi.org/10.11646/phytotaxa.404.3.2
- Averyanov, L.V., Nguyen, V.C., Bui, V.H., Vuong, T.B., Wyn-Jpnes, B., Nuraliev, M.S., Maisak, T.V., Krupkina, L.I., Luu, H.T., Nguyen, K.S. & Nguyen, V.K. (2024) Novelties in Aspidistra (Asparagaceae, Convallarioideae) with erect stems in the flora of Vietnam: A. quanii, a new species, and A. erecta, a new national record. Phytotaxa 640 (1): 39–49. https://doi.org/10.11646/phytotaxa.640.1.4
- Beentje, H. (2016) The Kew Plant Glossary, an illustrated dictionary of plant terms, 2 edition. Royal Botanic Gardens, Kew, London, 184 pp.
- Chu, Q.N., Nguyen, C.H., Averyanov, L.V., Dai, H.V., Nguyen, K.S., Maisak, T.V. & Krupkina, L.I. (2024) Aspidistra tenuistyla and A. luteo-rubra (Asparagaceae, Convallarioideae), a new tubuliflorous species from northern Vietnam. Phytotaxa 662 (2): 161–169. https://doi.org/10.11646/phytotaxa.662.2.4
- IUCN Standards and Petitions Committee. (2024) Guidelines for Using the IUCN Red List Categories and Criteria. Version 15.1. Prepared by the Standards and Petitions Committee. Available from: https://nc.iucnredlist.org/redlist/content/attachment_files/RedListGuidelines.pdf (accessed 31 December 2024)
- Ker Gawler, J.B. (1822) Aspidistra lurida. The Botanical Register 8: 628.
- Simpson, M.G. (2019) Plant systematics. 3rd ed. Elsevier, Burlington, 761 pp. https://doi.org/10.1016/B978-0-12-812628-8.50001-8
- Tillich, H.J. (2023) 200 years Aspidistra (Asparagaceae), and now more than 200 species: a new comprehensive determination key, and an annotated bibliography of the genus. Nordic Journal of Botany 2023 (3): e03818. https://doi.org/10.1111/njb.03818
- Wan, Y. (1984) New species of Liliaceae from Guangxi. Bulletin of Botanical Research (Harbin) 4 (4): 165–171.