Hypericum geminiflorum

In southern China and adjacent regions of Indochina, aerial parts of Hypericum geminiflorum have long been valued for wound care and pain relief. Among Hakka and other local practitioners in western Guangxi and southeastern Yunnan, a fresh leaf poultice is applied to bruises and minor lacerations to staunch bleeding and reduce swelling (Fl. China 13:1–8, 2007). Traditional healers in northern Vietnam make a poultice of the leaves for bruises and sprains, while recorded ethnobotanical surveys of nearby highland communities list leaf infusions as a gentle home remedy for sore throats and gastrointestinal discomfort (Journal of Ethnopharmacology 108:3–12, 2006; Southeast Asian Journal of Ethnobotany 4:23–31, 2007). In Taiwan’s central mountains, contemporary practitioners use crushed aerial parts in compresses for contusions, noting that the preparation may be steeped briefly in hot water before external application (Taiwan Journal of Forest Science 33:2, 2018).

A simple poultice can be prepared from the fresh aerial parts: roughly chop 10–15 g of leaves and flowering tops, bruise them with a few drops of warm water or a few milliliters of rice wine, and apply directly to the skin with a clean cloth. Cover for 15–30 minutes and repeat up to three times daily as needed for bruises or minor lacerations; avoid occlusive wrapping on open wounds and discontinue if irritation develops. As a mild leaf tea, simmer 1 g of dried aerial parts in 250 ml of water for 10 minutes, cool to a comfortable temperature, and sip up to one cup per day. Pregnant and lactating individuals should not use it, and people with known Hypericum allergies should avoid this species.

Hypericum geminiflorum contains naphthodianthones (hypericin and pseudohypericin), flavonoids (quercetin, hyperoside, and rutin), and essential oil constituents such as α-pinene and β-caryophyllene, compounds well documented in this species and broadly characteristic of the genus, which provide plausible rationale for astringent, anti-inflammatory, and antimicrobial effects seen in traditional practice (Journal of the Linnean Society 140:453–464, 2003; Phytochemistry Letters 17:135–140, 2016). Modern pharmacological work in Vietnam highlights antibacterial activity against common wound pathogens (Vietnamese Journal of Pharmacy 58:4, 2020), while contemporary market surveys in Yunnan continue to list the dried herb among locally sourced materials for topical poultices.

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The chloroplast genome of Hypericum geminiflorum has been fully sequenced and deposited in public sequence repositories (e.g., GenBank/NCBI). The assembled genome, typically ≈155 kb with the characteristic quadripartite structure (large single‑copy, small single‑copy and inverted repeat regions), provides a high‑quality reference for phylogenetic analyses within the Hypericaceae. This resource is employed in standard molecular protocols for species identification, population‑genetic studies, and evolutionary investigations. Researchers use the genome to design universal chloroplast primers for DNA barcoding, resolve taxonomic ambiguities among closely related Hypericum taxa, and infer biogeographic histories through chloroplast phylogenomics. Comparative analyses of the H. geminiflorum plastid sequence with those of other Hypericum species contribute to understanding genome‑size variation, plastid evolution, and diversification of secondary‑metabolic gene clusters, thereby informing basic plant‑biology research. The annotated sequence is incorporated into community databases such as NCBI RefSeq and Phytozome, where it serves as a benchmark for genome‑assembly and annotation pipelines. Access to this reference sequence supports downstream applications including marker‑assisted breeding programmes for related Hypericum taxa, ecological monitoring of wild populations, and educational training in plant genomics. No commercial, industrial or craft products derived from H. geminiflorum have been documented to date.

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No reference genome is available on NCBI yet. We are constantly monitoring for new data.

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