Hypericum chishuiense (Hypericaceae, sect. Ascyreia), a new St. John's wort species from Guizhou, China

Authors

RUIZHI BAIFollow
ZHENG-LIN HEFollow
FERHAT CELEPFollow
LU WANGFollow
CHUNLEI XIANGFollow

Abstract

Hypericum chishuiense (Hypericaceae), a new species from Chishui County, Guizhou Province, China, is described and illustrated. Molecular phylogenetic analyses, based on five plastid DNA markers (psbA-trnH, psbC-trnS, rbcL, trnL-trnF, and trnS-trnG), place the new species within H. sect. Ascyreia. Morphologically, the new species is closely related to H. stellatum and H. rotundifolium, but it can be distinguished by several features, including broadly ovate, ovate-elliptic to subcircular leaves (vs. oblong-lanceolate or lanceolate to narrowly ovate leaves of H. stellatum) and broadly elliptic, ovate to triangular-ovate sepals (vs. narrowly lanceolate and rare markedly leaf-like sepals H. stellatum), and it can be distinguished from H. rotundifolium by its longer style (1.2–1.5 cm vs. 0.5–0.9 cm) and shorter ovary (0.4–0.6 cm vs. 0.7–0.9 cm). The distribution, habitat, and conservation status of the new species are also provided.

Author ORCID Identifier

RUIZHI BAI: 0000-0001-8703-1851

ZHENG-LIN HE: 0009-0006-9259-5663

FERHAT CELEP: 0000-0003-3280-8373

LU WANG: 0000-0002-8684-4305

CHUNLEI XIANG: 0000-0001-8775-6967

DOI

10.55730/1300-008X.2848

Keywords

China, Hypericeae, Malpighiales, new species, taxonomy

First Page

133

Last Page

142

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

BAI, RUIZHI; HE, ZHENG-LIN; CELEP, FERHAT; WANG, LU; and XIANG, CHUNLEI (2025) "Hypericum chishuiense (Hypericaceae, sect. Ascyreia), a new St. John's wort species from Guizhou, China," Turkish Journal of Botany: Vol. 49: No. 2, Article 7. https://doi.org/10.55730/1300-008X.2848
Available at: https://journals.tubitak.gov.tr/botany/vol49/iss2/7