Қызғалдақтар тұқымдасының Thalictrum туысы

Genus of flowering plants in the buttercup family Ranunculaceae

Thalictrum (/pron//θ//ə/'/l//ɪ//k//t//r//ə//m/) is a genus of 120 200 species of herbaceous perennial flowering plants in the buttercup family, Ranunculaceae, native mostly to temperate regions. Meadow rue is a common name for plants in this genus. Thalictrum is a taxonomically difficult genus with poorly understood species boundaries; it is in need of further taxonomic and field research for clarification. Despite their common name of "meadow rue", Thalictrum species are not closely related to the true rue (family Rutaceae), but resemble its members in having compound leaves twice or thrice divided.

Meadow rue leaves are alternate, bipinnately compound, and commonly glaucous blue green in colour. The flowers are small and apetalous (no petals), but have numerous long stamens, often brightly white, yellow, pink or pale purple, and are produced in conspicuous dense inflorescences. In some species (e. g. T. chelidonii, T. tuberosum), the sepals are large, brightly coloured and petal like, but in most they are small and fall when the flower opens or soon after.

Meadow rues are usually found in shaded or damp locations, with a sub cosmopolitan range throughout most of the Northern Hemisphere and also south to southern Africa and tropical South America, but absent from Australasia. They are most common in temperate regions of the world; twenty two species are found in North America.

Anemophily (wind pollination) is a characteristic of some members this genus, as seen in Thalictrum fendleri and Thalictrum dioicum. Others, such as Thalictrum sparsiflorum, are entomophilous (pollinated by insects). Thalictrum species are used as food plants by the larvae of some Lepidoptera species including the Setaceous Hebrew Character moth.

In addition to alkaloids, Thalictrum species produce many other classes of metabolites, including triterpenoids and triterpenoid glycosides, flavonoids, cyanogenic glycosides, hydrocarbons, alcohols with high molecular weight, fatty acids, phenolic compounds and sterols. Typical natural products found in this genus are benzylisoquinoline alkaloids, such as magnoflorine, hernandezine, and the structurally related alkaloid berberine.