Japanese Ophiorrhiza

Names and Synonyms

Common Names

• Japanese Ophiorrhiza

Scientific Names

Accepted name

Synonyms

• Ophiorrhiza japonica var. minor
• Ophiorrhiza monticola f. longistigma
• Ophiorrhiza labordei
• Ophiorrhiza japonica f. plena
• Ophiorrhiza japonica var. amamiana
• Ophiorrhiza japonica var. acutiloba
• Ophiorrhiza japonica var. tashiroi
• Ophiorrhiza eryei
• Ophiorrhiza dimorphantha
• Ophiorrhiza dimorphantha f. brevistigma
• Ophiorrhiza dimorphantha f. longistigma
• Ophiorrhiza cavaleriei
• Ophiorrhiza monticola
• Ophiorrhiza monticola f. brevistigma
• Ophiorrhiza nigricans
• Ophiorrhiza tashiroi
• Ophiorrhiza acutiloba

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and the class Equisetopsida. As a member of the subclass Magnoliidae and the order Gentianaales, it is classified under the family Rubiaceae. Its taxonomic identity is further defined by its placement within the genus Ophiorrhiza.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily distributed across various regions of East Asia. In China, its presence is widespread, spanning from the North-Central territories to the South-Central areas. It can also be found growing in the Southeast regions of China as well as on the island of Hainan. Beyond the Chinese mainland, the species has a significant distribution in Japan. Together, these locations highlight the plant's specific ecological range within the eastern part of the continent.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Ophiorrhiza japonica is characterized by a highly specialized niche, specifically defined by its restricted altitudinal distribution. This species is found within a precise elevational range that spans from a minimum of 1800 m AMSL to a maximum of 1800 m AMSL, indicating an extreme stenotopic nature where it is confined to a narrow montane band. Such specific elevational requirements suggest that the plant is highly adapted to the particular microclimatic conditions, such as temperature, humidity, and atmospheric pressure, found exclusively at this altitude. This narrow ecological amplitude implies that the species may be sensitive to environmental shifts and relies on the stable, specialized habitat characteristics provided by this specific highland zone.

Elevational range max:

1800 m AMSL

Life history

The life history of Ophiorrhiza japonica is characterized by its growth habit as a chamaephyte, a life form where the perennating buds are located near or just above the soil surface, allowing it to persist through seasonal environmental shifts. This perennial herb utilizes a specialized rhizomatous system to establish itself within forest floors and shaded understories, where it can navigate the competitive light environment. Its developmental cycle involves the emergence of slender, creeping stems that facilitate vegetative spreading, alongside the production of seasonal reproductive structures. By maintaining its vital organs close to the ground, the plant optimizes its ability to withstand fluctuations in temperature and moisture, ensuring long-term survival and the ability to re-emerge during favorable growing seasons.

Life form :

chamaephyte

Morphology

The morphology of Ophiorrhiza japonica is characterized by its growth form as a non-woody herb. It functions as a self-supporting climber, utilizing its structural development to navigate its environment without requiring external hosts. The plant is an independent organism, meaning it does not exhibit parasitic behavior, and it maintains a terrestrial lifestyle rather than growing as an epiphyte.

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Woodiness :

non-woody

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Ophiorrhiza japonica has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include camptothecin.

camptothecin

1. Scientific data