Thalictrum squarrosum

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Thalictrum dichotomum
• Thalictrum ledebourianum
• Thalictrum repens
• Thalictrum collinum var. ledebourianum
• Thalictrum elatum lusus ledebourii
• Thalictrum trigynum
• Thalictrum trispermum

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified under the phylum Streptophyta within the class Equisetopsida. As a member of the subclass Magnoliidae and order Ranunculales, it is specifically situated in the family Ranunculaceae. Its taxonomic identity is finalized within the genus Thalictrum.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant, known as Thalictrum squarrosum, exhibits a specific geographical distribution across the vast regions of Siberia. Within this massive territory, it can be found growing in the Republic of Buryatia. Its presence is also documented in the eastern regions of Chitа and Irkutsk. Furthermore, the species extends its range into the southern territory of Tuva. Finally, its distribution reaches the northern reaches of the Siberian wilderness in Yakutiya.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Thalictrum squarrosum is characterized by its preference for high-altitude terrain, specifically colonizing mountains and stony places. This species exhibits a broad vertical distribution across various landscapes, with an elevational range that begins at a minimum of 200 m AMSL and extends to a maximum of 1900 m AMSL. Throughout its natural range, the plant maintains an average elevational position of approximately 1050 m AMSL, where it thrives in the rugged, well-drained environments provided by rocky and montane substrates.

Elevational range max:

1900 m AMSL

Elevational range mean:

1050 m AMSL

Elevational range min:

200 m AMSL

Habitat :

mountains, stony places

Life history

The life history of Thalictrum squarrosum is characterized by its status as a perennial species, meaning it lives for more than two years and undergoes repeated cycles of growth and dormancy. As a perennial herb, the plant establishes a persistent root system that allows it to survive through unfavorable seasons and re-emerge annually from its existing biomass. Each growing season, the plant invests energy into developing its vegetative structures, including its distinct foliage, before transitioning into a reproductive phase where it produces flowers and seeds to ensure the continuation of its lineage. This perennial nature provides the plant with a competitive advantage in its natural habitat, as it can accumulate resources over multiple years to support robust flowering periods and effective seed dispersal.

Lifecycle :

perennial

Morphology

The morphology of Thalictrum squarrosum is characterized by its growth form as a non-woody herb, specifically categorized as a forb. This plant is self-supporting rather than acting as a climber, liana, or vine, and it functions as an independent organism without parasitic tendencies. It is primarily a terrestrial species, though it can inhabit semiaquatic or aquatic environments. In terms of physical dimensions, the plant maintains a relatively low stature, with a height ranging from a minimum of 0.3 m to a maximum of 0.8 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Plant height max:

0.8 m

Plant height min:

0.3 m

Woodiness :

non-woody

Physiology

The physiology of Thalictrum squarrosum is characterized by a C3 photosynthetic pathway, a metabolic strategy typical of most temperate forest floor herbs that rely on the direct fixation of atmospheric carbon dioxide via the enzyme RuBisCO. This C3 mechanism involves the initial formation of a three-carbon compound during the Calvin cycle, which is highly efficient in the shaded, cool, and moist microclimates where this species typically thrives. Due to this pathway, the plant maintains a relatively low compensation point for CO2 but is subject to photorespiration when exposed to high light intensities and elevated temperatures. Its physiological processes are closely tied to its adaptation to temperate seasonal cycles, managing gas exchange and water use through stomatal regulation that supports steady biomass accumulation during the growing season.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Thalictrum squarrosum is characterized by sexual reproduction through bisexual flowers, facilitating the genetic diversity of the species. The flowering period typically commences in June and continues through July. Following successful pollination, the plant develops fruits that exhibit specific size dimensions, with a mean fruit length of 0.45 cm. These fruits range in size from a minimum of 0.4 cm to a maximum of 0.5 cm in length.

Flowering time :

Jun

Flowering time :

Jul

Fruit length max:

0.5 cm

Fruit length mean:

0.45 cm

Fruit length min:

0.4 cm

Reproduction sexual :

bisexual

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Thalictrum squarrosum has 4 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Dolabellane diterpene, Squarroside C, Squarroside I, Squoside A.

Dolabellane diterpene

1. Chemical & pharmaceutical bulletin

Squarroside C

1. Journal of natural products

Squarroside I

1. Chemical & pharmaceutical bulletin

Squoside A

1. Chemical & pharmaceutical bulletin

Preparations

Thalictrum squarrosum has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include dried aerial parts.

Dried aerial parts

1. Chemical & pharmaceutical bulletin