Comments
(
İngilizce
)
eFloras tarafından sağlandı
Bidens laevis and B. cernua are similar in gross appearance; specimens of one are sometimes misidentified as the other. Perhaps they represent extremes of a single species.
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Description
(
İngilizce
)
eFloras tarafından sağlandı
Annuals (sometimes persisting), (10–)20–60(–120+) cm. Leaves (sometimes in 3s or 4s) sessile; blades obovate or elliptic to lanceolate or linear, (20–)50–100(–160+) × (5–)10–25(–40+) mm, bases cuneate to rounded, margins usually coarsely dentate to serrate, sometimes ciliate, apices acute to acuminate, faces glabrous. Heads (erect at flowering, sometimes nodding in fruit) borne singly or in open, ± corymbiform arrays. Peduncles (10–)20–60 mm. Calyculi of 5–7(–9+) erect or spreading to reflexed, oblanceolate or lanceolate to linear, often foliaceous bractlets or bracts (6–)10–12(–20+) mm, margins usually ciliate, abaxial faces glabrous or bases hispidulous. Involucres turbinate to hemispheric or broader, (4–)6–8(–10+) × 8–12+ mm. Phyllaries 8–12, ovate or obovate to lance-oblong, (4–)6–8(–10+) mm (tips often orange to purplish, as are tips of paleae). Ray florets usually 7–8, rarely 0; laminae orange-yellow, (10–)15–25(–30) mm. Disc florets (25–)60–100(–150+); corollas yellow to orange-yellow, 3–6.5 mm. Cypselae blackish, red-brown, or stramineous, obcompressed, flattened or unequally 3–4-angled, ± cuneate, outer 6–8 mm, inner 8–10 mm, margins retrorsely ciliate or barbed, apices ± truncate to convex, faces ± 1-nerved, ± striate, glabrous; pappi of 2–4 ± erect, retrorsely barbed awns 3–5 mm. 2n = 22, 24.
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Synonym
(
İngilizce
)
eFloras tarafından sağlandı
Helianthus laevis Linnaeus, Sp. Pl. 2: 906. 1753; Bidens chrysanthemoides Michaux; B. helianthoides Kunth; B. nashii Small; B. quadriaristata de Candolle
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Distribution
(
İspanyolca; Kastilyaca
)
IABIN tarafından sağlandı
II, V, RM, VII, VIII, IX, X
Bidens laevis
(
İngilizce
)
wikipedia EN tarafından sağlandı
Bidens laevis is a species of flowering plant in the daisy family known by the common names larger bur-marigold[3] and smooth beggarticks.[4] It is native to South America, Mexico, and the southern and eastern United States. It grows in wetlands, including estuaries and riverbanks.[5][6][7][8][9][10][11][12]
Bidens laevis is similar in appearance to its relative Bidens cernua and the two are sometimes confused. This is an annual or perennial herb growing over 20 centimeters tall and sometimes much taller, exceeding one meter in height and sometimes approaching two. The narrow lance-shaped leaves are 5 to 15 centimeters long, with finely toothed edges and pointed tips. The inflorescence bears one or more flower heads which bend down as they become heavy with fruit after flowering. Each head has a center of yellow disc florets and a fringe of 7 or 8 yellow ray florets each up to 3 centimeters long. The fruit is a dry achene with sharp barbs that adhere to fur and clothing, thus helping the plant with seed dispersal.[5]
References
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^ Greene Pittonia 4(24): 254 1901
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^ The Plant List, Bidens laevis (L.) "Britton, Sterns & Poggenb."
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^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
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^ USDA, NRCS (n.d.). "Bidens laevis". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 9 January 2016.
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^ a b Flora of North America, Bidens laevis (Linnaeus) Britton, Sterns & Poggenburg, Prelim. Cat. 29. 1888
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^ Biota of North America Program 2014 county distribution map
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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
-
^ Marticorena, C. & M. Quezada. 1985. Catálogo de la Flora Vascular de Chile. Gayana, Botánica 42: 1–157
-
^ Brako, L. & J. L. Zarucchi. (eds.) 1993. Catalogue of the Flowering Plants and Gymnosperms of Peru. Monographs in Systematic Botany from the Missouri Botanical Garden 45: i–xl, 1–1286
-
^ Breedlove, D.E. 1986. Flora de Chiapas. Listados Florísticos de México 4: i–v, 1–246
-
^ Neill, D. A. & C. Ulloa Ulloa. 2011. Adiciones a la Flora del Ecuador: Segundo Suplemento, 2005-2010 1–202. Fundación Jatun Sacha, Quito
-
^ Zuloaga, F. O., O. Morrone, M. J. Belgrano, C. Marticorena & E. Marchesi. (eds.) 2008. Catálogo de las plantas vasculares del Cono Sur. Monographs in Systematic Botany from the Missouri Botanical Garden 107(1–3): i–xcvi, 1–3348.
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Bidens laevis: Brief Summary
(
İngilizce
)
wikipedia EN tarafından sağlandı
Bidens laevis is a species of flowering plant in the daisy family known by the common names larger bur-marigold and smooth beggarticks. It is native to South America, Mexico, and the southern and eastern United States. It grows in wetlands, including estuaries and riverbanks.
Bidens laevis is similar in appearance to its relative Bidens cernua and the two are sometimes confused. This is an annual or perennial herb growing over 20 centimeters tall and sometimes much taller, exceeding one meter in height and sometimes approaching two. The narrow lance-shaped leaves are 5 to 15 centimeters long, with finely toothed edges and pointed tips. The inflorescence bears one or more flower heads which bend down as they become heavy with fruit after flowering. Each head has a center of yellow disc florets and a fringe of 7 or 8 yellow ray florets each up to 3 centimeters long. The fruit is a dry achene with sharp barbs that adhere to fur and clothing, thus helping the plant with seed dispersal.
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Bidens laevis
(
İspanyolca; Kastilyaca
)
wikipedia ES tarafından sağlandı
Bidens laevis es una especie de planta fanerógama de la familia de las asteráceas.
Distribución y hábitat
Es originaria de América del Sur, donde crece en los humedales, incluidos los estuarios y las riberas de los ríos. Es similar en apariencia a su pariente Bidens cernua y los dos, a veces, se confunden. Esta es una hierba anual o perenne que alcanza un tamaño de 20 centímetros de altura, a veces mucho más alto, superior a un metro de altura y a veces erca de dos. Las hojas lanceoladas son estrechas de 5 a 15 centímetros de largo, con bordes finamente dentados y puntiagudos.
La inflorescencia tiene una o más cabezas de flores que se doblan hacia abajo a medida que estén cargadas de frutos después de la floración. Cada cabeza tiene un centro de floretes del disco de color amarillo y una franja de 7 u 8 flores liguladas amarillas cada una de hasta 3 centímetros de largo. El fruto es un aquenio con púas agudas.
Taxonomía
Bidens laevis fue descrita por (L.) Britton Sterns Poggenb. y publicado en Preliminary Catalogue of Anthophyta and Pteridophyta Reported as Growing Spontaneously within One Hundred Miles of New York 29. 1888.[1]
- Etimología
Ver: Bidens
laevis: epíteto latíno que significa "dentada".[2]
- Sinonimia
-
Bidens chrysanthemoides Michx.
- Bidens chrysanthemoides var. chrysanthemoides
-
Bidens chrysanthemoides var. nashii (Small) Jeps.
-
Bidens elegans Greene
-
Bidens expansa Greene
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Bidens formosa Greene
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Bidens helianthoides Kunth
-
Bidens lugens Greene
-
Bidens nashii Small
-
Bidens nashii Wooton
-
Bidens parryi Greene
-
Bidens persicifolia Greene
-
Bidens quadriaristata DC.
- Bidens quadriaristata var. quadriaristata
-
Bidens speciosa Parish
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Coreopsis flammula Banks ex Steud.
-
Coreopsis perfoliata Walter
-
Coreopsis radiata Mill.
-
Helianthus laevis L.
-
Heliopsis laevis (L.) Pers.
- Heliopsis laevis var. laevis
-
Kerneria helianthoides (Kunth) Cass.[3]
Referencias
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- Autores y editores de Wikipedia
Bidens laevis: Brief Summary
(
İspanyolca; Kastilyaca
)
wikipedia ES tarafından sağlandı
Bidens laevis es una especie de planta fanerógama de la familia de las asteráceas.
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Detalle de la flor
![src=]()
Vista de la planta
![src=]()
En su hábitat
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Bidens laevis
(
Fransızca
)
wikipedia FR tarafından sağlandı
Bidens laevis est une espèce de plantes à fleurs de la famille des Asteraceae originaire de la moitié sud des États-Unis où elle pousse dans les zones humides.
Elle est semblable en apparence à Bidens cernua et les deux sont parfois confondues.
C'est une plante annuelle ou vivace par sa base de plus de 20 centimètres de hauteur et parfois beaucoup plus grande, plus d'un mètre et se rapprochant parfois de deux. Les feuilles opposées, sessiles, étroites, lancéolées, mesurent de 5 à 15 centimètres de long, sont à bords finement dentés et à bouts pointus. L'inflorescence porte une ou plusieurs têtes de fleurs qui se courbent vers le bas à mesure que les lourds fruits grossissent après la floraison. Chaque capitule a un centre de fleurons jaunes et une frange de 7 ou 8 fleurons jaune en rayons mesurant chacun jusqu'à 3 centimètres de long. Le fruit est un akène à poils piquants.
Notes et références
Références taxinomiques
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Bidens laevis: Brief Summary
(
Fransızca
)
wikipedia FR tarafından sağlandı
Bidens laevis est une espèce de plantes à fleurs de la famille des Asteraceae originaire de la moitié sud des États-Unis où elle pousse dans les zones humides.
Elle est semblable en apparence à Bidens cernua et les deux sont parfois confondues.
C'est une plante annuelle ou vivace par sa base de plus de 20 centimètres de hauteur et parfois beaucoup plus grande, plus d'un mètre et se rapprochant parfois de deux. Les feuilles opposées, sessiles, étroites, lancéolées, mesurent de 5 à 15 centimètres de long, sont à bords finement dentés et à bouts pointus. L'inflorescence porte une ou plusieurs têtes de fleurs qui se courbent vers le bas à mesure que les lourds fruits grossissent après la floraison. Chaque capitule a un centre de fleurons jaunes et une frange de 7 ou 8 fleurons jaune en rayons mesurant chacun jusqu'à 3 centimètres de long. Le fruit est un akène à poils piquants.
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Bidens laevis
(
Vietnamca
)
wikipedia VI tarafından sağlandı
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Bidens laevis: Brief Summary
(
Vietnamca
)
wikipedia VI tarafından sağlandı
Bidens laevis là một loài thực vật có hoa trong họ Cúc. Loài này được (L.) "Britton, Sterns & Poggenb." mô tả khoa học đầu tiên năm 1888.
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