Cuscuta japonica

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Monogynella japonica

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified within the phylum Streptophyta and the class Equisetopsida. As a member of the subclass Magnoliidae, it falls under the order Solanales and the family Convolvulaceae. Its taxonomic identity is completed by its designation within the genus Cuscuta.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a broad distribution across the northernmost reaches of Asia. Within the vast territory of Siberia, it can be found in the Chitá region as well as in Yakutiya. Its presence extends significantly into the Russian Far East, where it inhabits the Amur area. Additionally, the species is documented throughout the Khabarovsk territory. Finally, its geographical range includes the Primorye region of the Russian Far East.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Cuscuta japonica is defined by its specialized parasitic lifestyle, which dictates its distribution across diverse wetland and semi-aquatic landscapes. It is commonly found inhabiting areas such as lakes, meadows, rivers, and shrubberies, where it can locate suitable host plants to facilitate its nutrient extraction. In these environments, the plant utilizes its climbing, vine-like structure to weave through the vegetation of riparian zones and open grasslands, relying on the density of surrounding flora to support its growth. By occupying these moist and vegetated habitats, it thrives in the transition zones between aquatic and terrestrial ecosystems, leveraging the abundance of host species found in riverbanks and meadowlands to complete its life cycle.

Habitat :

lakes, meadows, rivers, shrubberies

Life history

The life history of Cuscuta japonica is characterized by an annual lifecycle, meaning it completes its entire biological development—from germination to seed production—within a single growing season. The process begins when seeds germinate in the soil, typically triggered by moisture and warmth; however, because the plant lacks functional leaves and chlorophyll, it must rapidly locate a suitable host plant to survive. Upon sensing chemical cues from a nearby host, the seedling extends tendrils that coil tightly around the host's stems to establish a parasitic connection through specialized structures called haustoria. Once the connection is secured, the plant extracts essential nutrients and water from the host's vascular system to fuel its rapid vegetative growth. As the growing season progresses, the plant transitions from its vegetative phase to a reproductive phase, producing inflorescences that bear small, inconspicuous flowers. Following successful pollination, the plant develops seeds, which are then released into the environment to await the next seasonal cycle, completing its annual progression.

Lifecycle :

annual

Morphology

The morphology of Cuscuta japonica is characterized by its unique growth habit and specialized structure. It functions as a non-woody herb and a forb, exhibiting a growth form that is distinctly that of a vine or liana. As a climber, it is classified as an obligatory climber, meaning it relies on host structures for physical support rather than being self-supporting. Furthermore, the plant operates as a facultative parasite, utilizing specialized structures to interface with its environment while maintaining its characteristic delicate, thread-like morphology.

Climber :

vine

Climber :

obligatory

Growth form :

herb

Growth form :

forb

Parasite :

facultative

Woodiness :

non-woody

Reproduction

The reproduction of Cuscuta japonica is characterized by a specific flowering period and the production of small, uniform fruit. The flowering process typically occurs during the month of August, marking both the start and the end of its peak reproductive window. Following pollination, the plant develops fruits that exhibit remarkable consistency in size; the fruit length is measured at a mean of 0.5 cm, with both the minimum and maximum recorded lengths also being 0.5 cm, indicating a highly standardized fruit dimension throughout its development.

Flowering time :

Aug

Fruit length max:

0.5 cm

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Cuscuta japonica has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include seed.

Seed

1. Journal of ethnopharmacology

Chemicals

Cuscuta japonica has 5 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include Flavonoids, Hyperoside, quercetin, quercetin 3-O-beta-D-apiofuranosyl-(1->2)-beta-D-galactoside, quercetin-3-o-beta-d-galactoside-7-o-beta-d-glucoside.

Flavonoids

1. Journal of pharmaceutical and biomedical analysis

Hyperoside

1. Journal of pharmaceutical and biomedical analysis

quercetin

1. Journal of pharmaceutical and biomedical analysis

quercetin 3-O-beta-D-apiofuranosyl-(1->2)-beta-D-galactoside

1. Journal of pharmaceutical and biomedical analysis

quercetin-3-o-beta-d-galactoside-7-o-beta-d-glucoside

1. Journal of pharmaceutical and biomedical analysis

Conditions

Cuscuta japonica has 4 reported investigations on conditions identified across 1 scientific publications and several other databases. The most consistently reported conditions include Alzheimer's disease, freckles, melasma, memory loss.

Alzheimer's disease

1. Nutrients

Freckles

1. Journal of ethnopharmacology

Melasma

1. Journal of ethnopharmacology

Memory loss

1. Nutrients

Preparations

Cuscuta japonica has 1 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include extract.

Extract

1. Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica