Vincetoxicum junzifengense B. J. Ye & S. P. Chen OK 2022, sp. nov.
- 1. College of Architecture and Urban Planning, Fujian University of Technology, Fuzhou 350108, China & College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China & yebaojian 1989 @ 163. com; https: // orcid. org / 0000 - 0003 - 4509 - 3733
- 2. College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China & tttxd 163 @ 163. com; https: // orcid. org / 0000 - 0001 - 6218 - 9601
- 3. College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China & zcy 810338055 @ 126. com; https: // orcid. org / 0000 - 0002 - 7120 - 9771
- 4. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China & 15705983137 @ 163. com; https: // orcid. org / 0000 - 0002 - 7976 - 0568
- 5. Junzifeng National Nature Reserve, Sanming 365200, China & caoxuefen 0307 @ 126. com; https: // orcid. org / 0000 - 0002 - 8688 - 821 X
- 6. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China & fjcsp @ 126. com; https: // orcid. org / 0000 - 0002 - 8090 - 6616
Description
Vincetoxicum junzifengense B.J.Ye & S.P.Chen, sp. nov. (Figs. 2 & 3).
Type: — CHINA. Fujian (Dz建): Mingxi (DZĀ), growing on loose soil, with high air moisture, elev. ca. 457 m, 25°35′46″N, 116°55′25″E, 15 July 2018, Baojian Ye WSD9808 (holotype FJFC).
Diagnosis:— This new species is most close to V. stauntonii, from which it differs by its climber life form, pubescent stem and leaf blade, triangular corolla lobe, dentate corona lobe, ovoid pollinium, and slightly elevated stigma.
Perennial twining climber, lower part erect and upper fertile part twining. Stems terete with short curved hairs, 1–2 mm long. Roots fascicled and slender. Leaves opposite, petiole ca. 1 cm; leaf blade narrowly lanceolate, sparsely pubescent, 6–15 × 2–3 cm, papery; lateral veins ca. 8 pairs, obvious, connected in the blade margin, and acuminate at base and apex. Inflorescences racemelike, axillary; peduncle 1.5 cm, bracteoles densely; pedicel 2 mm, sparsely pubescent; calyx rotate, deeply 5-lobed; lobes triangular, 2 × 1 mm, glabrous, basal glands 5; corolla amaranth, rotate, deeply five-lobed, ca. 12 mm in diameter, lobes triangular, 5 × 3 mm, pubescent; corona cupular, fleshy, shorter than gynostegium, 5-lobed, triangular, dentate on both sides of base, keel-convex on inner surface, connate with middle of gynostemium; stigma pentagon, slightly elevated; pollinia 2 per pollinarium, pendulous, ovoid, 0.3 × 0.2 mm. Follicles single, terete lanceolate in outline, ca. 8 cm long, ca. 1 cm in diameter, tapering toward apex, glabrous.
Phenology: —Flowering in July, and fruiting in August.
Distribution and habitat:—It has only been discovered in the subtropical evergreen broadleaf forest in the Junzifeng National Nature Reserve, West Fujian, China. It grows on around wet loose soil.
Etymology: —The specific epithet refers to the locality of the Junzifeng National Nature Reserve where the new species has been found. Therefore, the Chinese name is suggested as “ 君Ŧ峰àů (jun zi feng bai qian)”.
Conservation status: —After the general field survey, it was only found at one site in the Junzifeng National Nature Reserve, with less than 20 plants in an area of 2 m 2. Due to the small survey area and limited data, this new species is temporarily assessed as Data Dificient (DD) according to the IUCN (2020 Red List Categories and Criteria.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Event date
- 2018-07-15
- Family
- Apocynaceae
- Genus
- Vincetoxicum
- Kingdom
- Plantae
- Order
- Gentianales
- Phylum
- Tracheophyta
- Scientific name authorship
- B. J. Ye & S. P. Chen OK
- Species
- junzifengense
- Taxonomic status
- sp. nov.
- Taxon rank
- species
- Type status
- holotype
- Verbatim event date
- 2018-07-15
- Taxonomic concept label
- Vincetoxicum junzifengense Ye & Chen, 2022
References
- IUCN. (2020) The IUCN Red List of Threatened Species, version 2020 - 1. IUCN Red List Unit, Cambridge UK. Available from: http: // www. iucnredlist. org (accessed 1 May 2021).