Cornus officinalis Siebold & Zucc. — Japanese cornelian-cherry dogwood

Introduction

Japanese cornelian-cherry dogwood is a deciduous shrub or small tree native to China and long cultivated in Japan and Korea. Like Cornus mas, it opens yellow umbel-like flower clusters before leaf emergence, but mature trees often develop more conspicuously exfoliating bark, the leaves usually have more secondary veins, and the flowers tend to be richer yellow on longer pedicels. Red to purplish-red drupes ripen in autumn (Xiang & Boufford 2005; Deasy et al. 2026).

Phylogenetically, C. officinalis is one of the four Eurasian members of the Macrocarpium clade and is particularly close to C. mas. The two are distinct species, but hybridization is biologically possible: spontaneous garden hybrids have been documented morphologically, anatomically, and genetically (Morozowska et al. 2013). Tree TSAR does not currently recognize a named nothospecies for this cross.

Kew accepts three synonyms, including Macrocarpium officinale and C. officinalis var. koreana. Tree TSAR does not retain var. koreana as an accepted infraspecific taxon. POWO currently treats the native range as north-central and southeastern China and the species as introduced in Japan and Korea; horticultural literature reflects its much longer cultural history across East Asia (Royal Botanic Gardens, Kew 2026; Deasy et al. 2026).

Horticultural and Agricultural Uses

Cornus officinalis is both an ornamental and a major medicinal plant in East Asia. In the garden, early flowering, colorful autumn foliage in some forms, and exfoliating bark give it multi-season value. It is generally hardy in cold-temperate gardens, with Trees and Shrubs Online placing it in USDA Zones 4b–8, and it tolerates a broad range of soils when drainage is adequate. Seed can germinate after warm followed by cold stratification; named selections are maintained vegetatively (Deasy et al. 2026).

The dried fruit, known as shan zhu yu in Chinese materia medica, has been used for centuries in traditional East Asian medicine. Modern phytochemical work has identified iridoids, tannins, flavonoids, organic acids, polysaccharides, and many other compounds. Experimental studies report numerous biological activities, but the evidence base remains dominated by cell and animal studies. Recent reviews emphasize the shortage of rigorous clinical trials, pharmacokinetic data, and standardized quality-control frameworks, so traditional use and preclinical pharmacology should not be presented as established clinical efficacy (Gao et al. 2021; Cui et al. 2025).

The fruit also has food and functional-food uses, and numerous ornamental or fruiting cultivars exist. The close relationship with C. mas creates opportunities for breeding, but living collections should distinguish pure species from hybrids because spontaneous crosses occur where the two are planted together.

Conservation Concerns

A formal global IUCN assessment was not located for Cornus officinalis in the sources reviewed here. Kew’s angiosperm risk model predicts the species as not threatened, while Trees and Shrubs Online lists it as not evaluated and notes that truly wild Chinese trees may be much less common than the abundance of cultivated material suggests (Royal Botanic Gardens, Kew 2026; Deasy et al. 2026).

This cultivated-versus-wild distinction is important. A plant can be common in gardens, orchards, and medicinal production while genetically representative wild populations remain localized or poorly documented. Conservation priorities therefore include verifying naturally regenerating populations, documenting provenance of medicinal germplasm, and preventing agricultural abundance from being mistaken for secure wild status.

Additional Information

iNaturalist (opens in a new tab) — Direct taxon page with community observations.
Trees and Shrubs Online (opens in a new tab) — Detailed morphology, horticulture, cultural history, and cultivar information.
Plants of the World Online (opens in a new tab) — Accepted backbone, synonymy, and native-versus-introduced distribution.
Flora of China (opens in a new tab) — Regional flora source for Chinese morphology, habitat, and distribution.

References and Further Reading

Cui C, Liu W, Feng L, Zou J, Shi Y, Sun J, Zhang X, Huo E, Luan F, Zhang M (2025) Cornus officinalis Sieb.: An updated review on the ethnopharmacology, phytochemistry, pharmacology, toxicology, and pharmacokinetics. Journal of Ethnopharmacology 353(B): 120365. https://doi.org/10.1016/j.jep.2025.120365 (opens in a new tab)

Deasy M, Crowley D, Aldridge J, Chişu R (2026) Cornus officinalis. Trees and Shrubs Online. https://www.treesandshrubsonline.org/articles/cornus/cornus-officinalis/ (opens in a new tab)

Du Z-Y, Xiang Q-Y, Cheng J, Zhou W, Wang Q-F, Soltis DE, Soltis PS (2023) An updated phylogeny, biogeography, and PhyloCode-based classification of Cornaceae based on three sets of genomic data. American Journal of Botany 110(2): e16116. https://doi.org/10.1002/ajb2.16116 (opens in a new tab)

Gao X, Liu Y, An Z, Ni J (2021) Active components and pharmacological effects of Cornus officinalis: Literature review. Frontiers in Pharmacology 12: 633447. https://doi.org/10.3389/fphar.2021.633447 (opens in a new tab)

Morozowska M, Gawrońska B, Woźnicka A (2013) Morphological, anatomical and genetic differentiation of Cornus mas, Cornus officinalis and their interspecific hybrid. Dendrobiology 70: 45–57. https://doi.org/10.12657/denbio.070.005 (opens in a new tab)

Royal Botanic Gardens, Kew (2026) Cornus officinalis Siebold & Zucc. Plants of the World Online. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:271629-1 (opens in a new tab)

Xiang Q-Y, Boufford DE (2005) Cornaceae. In: Wu ZY, Raven PH, Hong DY (eds) Flora of China 14. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 206–221. https://www.efloras.org/flora_page.aspx?flora_id=2 (opens in a new tab)