Genus Tanacetum L.
Род 782 (31). ВРАТИГА - TANACETUM L.¹
L., Sp. Pl. ed. 1 (1753) 843, p.p.; Gen. Pl. ed. 5 (1754) 366; Heywood, Ann. Inst. Cavanilles 12 (1954) 313; Greuter, Med-Checklist 2 (2008) 729
Fam: Asteraceae (Compositae)
Genus: Tanacetum L.
English Name: Tansies, TansyDescription: Perennial, usually rhizome herbaceous plants (rarely semi-shrubs). Stems single to numerous, erect, simple or branched, glabrous or fibrous, with simple, bipartite, stellated or glandular hairs. Leaves consecutive, herbaceous, usually simple to triple feathery with entire or serrated shares, rarely finely toothed to entire, on petioles or sessile. Baskets isogamous or heterogamous, hemispherical, with a lot of blossoms, single or numerous in dense to loose thyroid apical complex inflorescences. Enveloping leaflets in 3 (4) rows, unequal, tile-like overlapping; the outer ones narrower and shorter than the webbed along the edge, in the upper third or half the inner ones. Flower bed flat to hemispherical, slightly reticulate pitted, glabrous, without bracts. The outermost flowers up to 30, tongue-like female, yellow or white to pale pink, clearly longer than the leaflets, rarely very small, shorter than the leaflets or undeveloped; inner tubular, numerous, yellow, bisexual; corolla on top with 5 teeth. Anthers linear, basically without appendages. The style with thin, linear sections. Fruits uniform, prismatically wedge-shaped, glabrous, without secretory ducts and mucous cells, with 3 - 10 thin ribs. Instead of a kite developed membranous, unevenly toothed or divided, 0.1 - 0.7 mm high crown. Insect pollinated; propagated by seeds and rhizome shoots.
Table for determination of the species
1 Baskets without tongue flowers, very rarely with single small flowers shorter than the tegumental leaflets and difficult to see ................. .................................................................................................................................................................................. 1. - T. vulgare L.
1* Baskets with tongue flowers clearly exceeding the leaflets ................................................................................................................. 2
2 The tongue flowers of yellow ........................................................................................................................................................... 3
2* The tongue flowers white ................................................................................................................................................................. 4
3 Baskets 7 - 10 mm in diameter, fibrous, rarely naked; outer sheath leaves broadly ovate ….................... 2. - T. millefolium (L.) Willd.
3* Baskets 4 - 7 mm in diameter, bare or scattered fibrous; outer sheath leaflets ovate-lance ................................................................... ............................................................................................. ............................. Equine tansy - T. achilleifolium (M. Bieb.) Sch. Beep.
4 Leaves simple ......................................................................................................................................... * - T. balsamita (L.) Willd.
4* Leaves simply - to double feathery ................................................................................................................................................... 5
5 Baskets 4 - 7 mm in diameter, (20) 40 - 100 (150) in compact thyroid inflorescences ………............................................................. .................................................................................................................................. 5. - T. macrophyllum (Waldst. & Kit.) Sch. Beep.
5* Baskets (5) 8 - 10 (14) mm in diameter, (3) 5 - 20 (30) in loose thyroid inflorescences, rarely single .................................................. 6
6 Middle and upper sessile leaves ................................................................................................. 3. - T. corymbosum (L.) Sch. Beep.
6* The middle and upper stem leaves on petioles ................................................................................ 4. - T. parthenium (L.) Sch. Beep.
¹ Developed by † B. Kuzmanov.From: „Флора на Република България”, том XI, БАН, Академично издателство „Проф. Марин Дринов”, София, (2013) * * * * *
Tanacetum is a genus of about 160 species of flowering plants in the aster family, Asteraceae, native to many regions of the Northern Hemisphere.[5] They are known commonly as tansies.[4][5][6] The name tansy can refer specifically to Tanacetum vulgare, which may be called the common tansy or garden tansy for clarity.[6]
Other familiar species include costmary (T. balsamita) and feverfew (T. parthenium).
Tansies are mainly perennial herbs, but some are annuals and subshrubs. Some are a few centimeters tall and some reach 1.5 metres (4 ft 11 in). They vary in form, with one or more branching stems growing erect or prostrate, usually from rhizomes. They are hairy to hairless in texture, and most are aromatic. The leaves are alternately arranged, the blades sometimes borne on petioles. They are usually deeply lobed and may have toothed edges. Most species have flowers in loose or dense inflorescences. The flower has layers of distinct phyllaries around its base and may be flat to hemispheric in shape. The flower has many yellow disc florets, sometimes over 300. Some species have ray florets in shades of yellow, or white with yellowish bases. Some species lack true ray florets but have flat yellowish disc florets that look like rays. The fruit is a ribbed, glandular cypsela, usually with a pappus on the end.[5]
From Wikipedia, the free encyclopedia
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Distribution in Bulgaria: (Conspectus of the Bulgarian Vascular Flora) = conspectus&gs_l= Zlc. Distribution: References: „Флора на Република България”, том XI, БАН, Академично издателство „Проф. Марин Дринов”, София, (2013) , Wikipedia, the free encyclopedia
SPECIES:
Tanacetum vulgare L. - Tansy, Bitter buttons, Cow bitter, or Golden buttons
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