Distribution in Egypt
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Oases, Mediterranean region and Sinai.
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Global Distribution
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Habitat
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Moist ground, edges of cultivation.
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Life Expectancy
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Comments
provided by eFloras
In the United States, Flaveria bidentis often occurs on ballast and waste ground near wharfs and the shore, locations that suggest its introduction from sailing vessels. The species is widespread and well established in South America, where it is thought to be native. Its floral structure appears to be the least advanced among the annual species of Flaveria, the heads being in somewhat scorpioid arrays. Distinguishing characteristics are 3(–4) phyllaries, 2–8 florets per head, reduced ray corollas, pubescent stems, and lanceolate-elliptic, bluish green, sometimes pubescent leaves. Flaveria bidentis is probably most closely related to F. campestris and F. trinervia.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Annuals, to 100 cm (delicate or robust, sparsely villous). Stems erect. Leaves petiolate (proximal, petioles 3–15 mm) or sessile (distal); blades lanceolate-elliptic, 50–120(–180) × 10–25(–70) mm, bases (distal) connate, margins serrate or spinulose serrate. Heads 20–100+ in tight subglomerules in scorpioid, cymiform arrays. Calyculi of 1–2 linear bractlets 1–2 mm. Involucres oblong-angular, 5 mm. Phyllaries 3(–4), oblong. Ray florets 0 or 1; laminae pale yellow, ovate-oblique, to 1 mm (not or barely surpassing phyllaries). Disc florets (2–)3–8; corolla tubes ca. 0.8 mm, throats funnelform, 0.8 mm. Cypselae oblanceolate or subclavate, 2–2.5 mm (those of ray florets longer); pappi 0. 2n = 36.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
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Ethulia bidentis Linnaeus, Mant. Pl. 1: 110. 1767
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Comprehensive Description
provided by North American Flora
Flaveria bidentis (L.) Kuntze, Rev. Gen. 3: 148. 1898
Ethulia bidentis L. Mant. 110. 1767.
Eupatorium chilense Molina, Sagg. Chile 142. 1782.
Milleria chiloensis Juss. Gen. 187, as synonym. 1789.
Flaveria chilensis Juss.; J. F. Gmel. Syst. Nat. 2: 1269. 1791.
Milleria Contrayerba Cav. Ic. 1: 2. 1791.
Yermifuga corymbosa R. & P. Svst. Fl. Per. 216. 1798.
Flaveria Contrayerba Pers. Syn. PI. 2: 489. 1807.
Flaveria capitala Juss.; Smith, in Rees, Cycl. 14: Flaveria no. 1. 1810.
Flaveria bonariensis DC. Prodr. 5: 635. 1836.
A dichotomously branched herb; stem 3-10 dm. high, sometimes tinged with red, glabrous or sparingly villous on the obtuse angles and the nodes; leaves slightly connate, lanceolate-elliptic, 3-ribbed, serrate, 3-8 cm. long, glabrous; cymes 2-2.5 cm. broad, with scorpioid branches; heads 2-9-flowered ; involucral bracts 3 with 1 or 2 small calyculate ones, the principal ones 4 mm. long, oblanceolate, obtuse; ligule yellow, 1 mm. long, narrow, upright, acute; disk-corollas 1-8, 2-3 mm. long; achenes 2 mm. long, that of the ray-flower slightly larger.
Type locality: "India?"
Distribution: Alabama, Georgia, and Florida; Mexico; South America.
- bibliographic citation
- Per Axel Rydberg. 1915. (CARDUALES); CARDUACEAE; HELENIEAE, TAGETEAE. North American flora. vol 34(2). New York Botanical Garden, New York, NY
Flaveria bidentis
provided by wikipedia EN
Flaveria bidentis, the coastal plain yellowtops, is a South American plant species of Flaveria within the family Asteraceae. It is native to South America, and naturalized in many places (Mexico, Central America, the West Indies, the southeastern United States, Europe, Africa, Asia, etc.).[2][3][4][5][6][7][8]
In the U.S. it was introduced into the states of Georgia, Alabama and Florida.[9]
Flaveria bidentis is an annual herb up to 100 cm (39.5 in) tall. One plant can sometimes produce 100 or more flower heads in a tightly packed array. Each head contains 3-8 yellow disc flowers. Sometimes the head also contains a single yellow ray flower.[8][10]
References
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^ The Plant List, Flaveria bidentis (L.) Kuntze
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^ Cabrera, A. L. 1978. Compositae. 10: 1–726. In A. L. Cabrera (ed.) Flora de la provincia de Jujuy. Instituto Nacional de Tecnología Agropecuaria, Buenos Aires
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^ López Calderón, R. P. 2000. La prepuna boliviana. Ecología en Bolivia 34: 45–70.
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^ Marticorena, C. & M. Quezada. 1985. Catálogo de la Flora Vascular de Chile. Gayana, Botánica 42: 1–157.
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^ Wiggins, I. L. & D. M. Porter. 1971. Flora of the Galápagos Islands 1–998. Stanford University Press, Stanford.
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^ Gibbs Russell, G. E., W. G. M. Welman, E. Retief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. Van Wyk & A. Nicholas. 1987. List of species of southern African plants. Memoirs of the Botanical Survey of South Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2).
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^ Flora of North America, Flaveria bidentis (Linnaeus) Kuntze, 1898. Coastal plain yellowtops
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^ a b Flora of China, Flaveria bidentis (Linnaeus) Kuntze, 1898. 黄顶菊 huang ding ju
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^ "Flaveria bidentis (L.) Kuntze | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2022-12-11.
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^ Powell, Albert Michael. 1979. Annals of the Missouri Botanical Garden 65(2): 623-626 description and commentary in English, South American distribution map on page 624
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Flaveria bidentis: Brief Summary
provided by wikipedia EN
Flaveria bidentis, the coastal plain yellowtops, is a South American plant species of Flaveria within the family Asteraceae. It is native to South America, and naturalized in many places (Mexico, Central America, the West Indies, the southeastern United States, Europe, Africa, Asia, etc.).
In the U.S. it was introduced into the states of Georgia, Alabama and Florida.
Flaveria bidentis is an annual herb up to 100 cm (39.5 in) tall. One plant can sometimes produce 100 or more flower heads in a tightly packed array. Each head contains 3-8 yellow disc flowers. Sometimes the head also contains a single yellow ray flower.
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