• WordNet 3.6
    • n Thalictrum widely distributed genus of perennial herbs: meadow rue
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Century Dictionary and Cyclopedia
    • n thalictrum A genus of plants, of the order Ranunculaceæ and tribe Anemoneæ. It is distinguished from the similarly apetalous genus Anemone by its lack of an involucre. It includes about 70 species, mostly natives of the north temperate or frigid regions, with a few in tropical India, the Cape of Good Hope, and the Andes. They are delicate or tall herbs with a perennial base, and ornamental ternately decompound leaves of many leaflets, which are often roundish and three-lobed, suggesting those of the columbine or maidenhair fern (see cut e under leaf). The flowers are commonly small, polygamous, and panicled, pendulous in T. dioicum and T. minus, and reduced to a raceme in T. alpinum. They consist chiefly of four or five greenish, yellowish, purple, or whitish sepals; the several or many carpels commonly become compressed stalked tailless achenes; the anthers are usually long and exserted or pendent, giving the inflorescence a graceful feathery appearance, and are especially conspicuous in T. aquilegifolium and T. flavum from their yellow color. The species are known in general as meadow-rue; 3 are natives of England, and 10 or more of the United States; the former T. anemonoides, the rue-anemone, a favorite early spring flower of the eastern and central United States, is now classed as Anemone thalictroides, or by some as Anemonella thalictroides. (See cut under apocarpous.) A few dwarf species are used for borders or rock-work, as T. minus and T. alpinum, the latter native of the mountains of Europe and Asia, as also of the Rocky Mountains, and reaching latitude 66° N. About 24 of the taller species are in cultivation, especially T. glaucum of Spain and the Austrian T. aquilegifolium, known as Spanish-tuft and feathered or tufted columbine. T. polygamum (formerly T. Cornuti), a conspicuous ornament of wet meadows in the United States, reaches the height of 4, sometimes 7, feet. T. flavum is known in England as fen-rue or maidenhair rue, and as false, monk's, or poor-man's rhubarb. T. foliolosum, the yellowroot of the Himalayas, produces tonic and aperient roots used in India in intermittent fevers.
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Chambers's Twentieth Century Dictionary
    • n Thalictrum thā-lik′trum a genus of perennial herbs of the Crowfoot family, the meadow-rues: a plant of this genus.
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Chambers's Twentieth Century Dictionary
Gr. thaliktronthallein, to bloom.


In literature:

Thalictrum alpinum (growing between lava, near Reikjavik).
"Visit to Iceland and the Scandinavian North" by Ida Pfeiffer
Darea, Glycine, Buchanania, Saurauja ferruginea, Thalictrum majus, Pothos, etc.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Thalictrum flavum (Meadow Rue) .
"Handbook to the Severn Valley Railway Illustrative and Descriptive of Places along the Line from Worcester to Shrewsbury" by J. Randall
There is, however, an important botanical difference between the two genera: the thalictrums have no calyx, and the Isopyrums have.
"Hardy Perennials and Old Fashioned Flowers" by John Wood
Then more pale yellow of Mullein, Thalictrum, and Paris Daisy, and so the colour passes to stronger yellows.
"Wood and Garden" by Gertrude Jekyll