Chinese Meadow-Rue

Names and Synonyms

Common Names

• Chinese Meadow-Rue
• DeLavay's Meadow-rue

Scientific Names

Accepted name

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant, known scientifically as Thalictrum delaavayi, belongs to the kingdom Plantae and the phylum Streptophyta. Within the class Equisetopsida and subclass Magnoliidae, it is categorized under the order Ranunculales and the family Ranunculaceae. Its specific taxonomic classification is completed by its placement within the genus Thalictrum.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a wide geographical distribution across several distinct regions. In Northern Europe, its presence can be noted in Great Britain. Moving toward Asia, it is found within the South-Central regions of China. It also grows within the high-altitude areas of Tibet. Finally, its range extends into the Indo-China region, specifically within Myanmar.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Thalictrum delavayi is characterized by its ability to inhabit diverse montane environments across a significant altitudinal gradient. This species demonstrates remarkable adaptability to varying topographical levels, occupying habitats that range from lower montane zones starting at an elevation of 1,000 m AMSL to high-altitude alpine or subalpine regions reaching a maximum of 4,300 m AMSL. Throughout its natural distribution, the plant maintains a mean elevation of approximately 2,650 m AMSL, suggesting that it is most optimally suited to the climatic conditions found within mid-to-high elevation mountain ecosystems.

Elevational range max:

4300 m AMSL

Elevational range mean:

2650 m AMSL

Elevational range min:

1000 m AMSL

Life history

The life history of Thalictrum delaavayi is characterized by its nature as a perennial species, allowing the plant to persist through multiple growing seasons. As a perennial, it establishes a robust root system that enables it to survive dormant periods and regrow annually from existing structures. This long-lived lifecycle enables the plant to occupy stable ecological niches, where it can undergo repeated cycles of vegetative growth and reproductive flowering over several years, rather than completing its entire life cycle within a single season.

Lifecycle :

perennial

Morphology

The morphology of Thalictrum delaavayi is characterized by a growth form categorized as a herb, manifesting as a non-woody plant structure. It functions as a self-supporting organism rather than a climber, lacking the vine or liana characteristics of obligatory or facultative climbers. In terms of its ecological niche and habitat preference, the plant is terrestrial in nature, rather than being an aquatic or semiaquatic species, and it does not exhibit epiphytic behavior. Furthermore, it is an independent organism, showing no parasitic tendencies toward other plants.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Thalictrum delaayi is primarily characterized by a C3 photosynthetic pathway, a metabolic strategy typical of many shade-tolerant perennial herbs found in temperate or montane forest ecosystems. This C3 mechanism involves the direct fixation of atmospheric carbon dioxide by the enzyme RuBisCO during the Calvin cycle, which is highly efficient in the cooler, more humid environments where this species typically thrives. Because it lacks the specialized carbon-concentrating mechanisms found in C4 or CAM plants, its physiological processes are closely tied to environmental moisture availability and ambient light intensity, necessitating a balance between gas exchange and transpiration to maintain cellular homeostasis. The metabolic efficiency of its C3 pathway supports the seasonal growth cycles and the production of secondary metabolites essential to its medicinal properties.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Thalictrum delavayi is characterized by the development of distinct fruit structures and fine seeds. The resulting fruits exhibit measurable variations in size, with an average length of 0.65 cm, though they can range from a minimum of 0.5 cm to a maximum of 0.8 cm. In terms of lateral dimension, the fruit width averages 0.285 cm, spanning a range between 0.25 cm and 0.32 cm. Following the maturation of the fruit, the plant produces small seeds with a mean mass of 0.00134 g. These seeds show slight weight fluctuations, with individual masses ranging from a minimum of 0.0013 g to a maximum of 0.00138 g.

Fruit length max:

0.8 cm

Fruit length mean:

0.65 cm

Fruit length min:

0.5 cm

Fruit width max:

0.32 cm

Fruit width mean:

0.285 cm

Fruit width min:

0.25 cm

Seed mass max:

0.00138 g

Seed mass mean:

0.00134 g

Seed mass min:

0.0013 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Thalictrum delavayi 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 root.

Root

1. Planta medica

Chemicals

Thalictrum delavayi has 1 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include Pseudoprotopine.

Pseudoprotopine

1. Planta medica

Activities

Thalictrum delavayi has 1 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include Cytotoxic.

Cytotoxic

1. Fitoterapia

Conditions

Thalictrum delavayi has 1 reported investigations on conditions identified across 1 scientific publications and several other databases. The most consistently reported conditions include immunosuppressive agents.

Immunosuppressive agents

1. Fitoterapia

Preparations

Thalictrum delavayi has 2 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include roots, whole plants.

Roots

1. Planta medica

Whole plants

1. Fitoterapia