Chromolaena
EOL Text
Chromolaena
Hierbas o arbustos erectos o sarmentosos. Tallos usualmente pubescentes. Hojas opuestas, pecioladas; láminas simples, usualmente trinervadas desde la base. Capítulos homógamos, discoides, con 10-40 flores, dispuestos en cimas corimbiformes. Involucro cilíndrico; filarios deciduos, sobrepuestos en 4-7 series. Flores bisexuales; corolas actinomorfas, tubulares, con 5 lóbulos cortos, usualmente papilosos o glandulosos; estambres 5, las anteras insertas, connatas; ovario ínfero, el estilo filiforme, con dos ramas estigmáticas lineares, alargadas, exertas, usualmente con un apéndice papiloso estéril. Fruto un aquenio turbinado, usualmente con 5 costillas longitudinales; pappus con ca. de 40 cerdas filiformes sin escamas. Género con 166 especies distribuido desde el sur de los Estados Unidos hasta el sur de Sudamérica incluyendo las Antillas.
Chromolaena
Erect or clambering herbs or shrubs. Stems usually pubescent. Leaves opposite, petiolate; blades simple, usually trinerved from the base. Capitula homogamous, discoid, with 10-40 flowers, arranged in corymbiform cymes. Involucre cylindrical; phyllaries deciduous, overlapping in 4-7 series. Flowers bisexual; corollas actinomorphic, tubular, shortly 5-lobed, the lobes usually papillose or glandular; stamens 5, the anthers inserted, connate; ovary inferior, the style filiform, with two linear stigmatic branches, elongate, exserted, usually with a sterile papillose appendage. Fruit a turbinate achene, usually with 5 longitudinal ribs; pappus with ca. 40 filiform bristles without scales. A genus of 166 species distributed from the southern United States to southern South America, including the Antilles.
Barcode of Life Data Systems (BOLD) Stats
Specimen Records:8
Specimens with Sequences:10
Specimens with Barcodes:7
Species:4
Species With Barcodes:3
Public Records:3
Public Species:3
Public BINs:0
Chromolaena is a genus of about 165 species of perennials and shrubs in the aster family, Asteraceae. The name is derived from the Greek words χρῶμα (chroma), meaning "color," and λαινα (laina), meaning "cloak." It refers to the colored phyllaries of some species.[2] Members of the genus are native to the Americas, from the southern United States to South America (especially Brazil).[2] One species, Chromolaena odorata, has been introduced to many parts of the world where it is considered a weed.[3]
The plants of this genus were earlier taxonomically classified under the genus Eupatorium, but are now considered to be more closely related to other genera in the tribe Eupatorieae.[4]
Selected species[edit]
- Chromolaena bigelovii (A.Gray) R.M.King & H.Rob. – Bigelow's Thoroughwort[2]
- Chromolaena borinquensis (Britt.) R.M.King & H.Rob. – Limestone Thoroughwort
- Chromolaena corymbosa (Aubl.) R.M.King & H.Rob. – Caribbean Thoroughwort
- Chromolaena frustrata (B.L.Rob.) R.M.King & H.Rob. – Cape Sable Thoroughwort[2]
- Chromolaena geraniifolia (Urb.) R.M.King & H.Rob. – Geraniumleaf Thoroughwort (Puerto Rico)[5]
- Chromolaena hirsuta (Hook. & Arn.) R.M.King & H.Rob.
- Chromolaena impetiolaris (Griseb.) Nicolson
- Chromolaena integrifolia (Bertero ex Spreng.) R.M.King & H.Rob.
- Chromolaena ivifolia R.M.King & H.Rob. – Ivyleaf Thoroughwort[2]
- Chromolaena macrodon (DC.) Nicolson
- Chromolaena odorata (L.) R.M.King & H.Rob. – Jack in the Bush[2]
- Chromolaena oteroi (Monachino) R.M.King & H.Rob. – Mona Island Thoroughwort
- Chromolaena sinuata (Lam.) R.M.King & H.Rob. – Wavyleaf Thoroughwort
- Chromolaena squalida (DC.) R.M.King & H.Rob.
- Chromolaena trigonocarpa (Griseb.) R.M.King & H.Rob.[6][7]
In Australia some species are called "triffid weed"[8]
References[edit]
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Wikimedia Commons has media related to Chromolaena. |
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Wikispecies has information related to: Chromolaena |
- ^ "Genus: Chromolaena DC.". Germplasm Resources Information Network. United States Department of Agriculture. 2011-01-06. Retrieved 2011-08-25.
- ^ a b c d e f Nesom, Guy L.. "Chromolaena de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 133. 1836.". Flora of North America. eFloras.org. Retrieved 2011-08-25.
- ^ "Chromolaena DC.". Digital Flora of Taiwan. eFloras.org.
- ^ Schmidt, GJ; EE Schilling (May 2000). "Phylogeny and Biogeography of Eupatorium (Asteraceae: Eupatorieae) Based on Nuclear ITS Sequence". American Journal of Botany (Botanical Society of America) 87 (5): 716–726. doi:10.2307/2656858. JSTOR 2656858. PMID 10811796.
- ^ John K. Francis, Research Forester, U.S. Department of Agriculture, Forest Service, International Institute of Tropical Forestry, Jardín Botánico Sur. "Chromolaena geraniifolia (Urban) King & H.E. Robins". Wildland Shrubs of the United States and its Territories: Thamnic Descriptions, General Technical Report IITF-WB-1, Edited by John K. Francis. Retrieved 2008-08-24.
- ^ "Chromolaena". Integrated Taxonomic Information System. Retrieved 2010-05-27.
- ^ "GRIN Species Records of Chromolaena". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2011-08-25.
- ^ http://www.weeds.org.au/docs/weednet6.pdf (page 6)
| License | http://creativecommons.org/licenses/by-sa/3.0/ |
| Rights holder/Author | Wikipedia |
| Source | http://en.wikipedia.org/w/index.php?title=Chromolaena&oldid=607371215 |
Scrambling, ± climbing shrub. Leaves opposite. Capitula discoid, 10-40-flowered in corymbs. Involucral bracts imbricate with a coloured apex. Receptacle flat or convex, sometimes with scales. Corolla white or pale blue. Achenes bristly, with (3-)5 ribs. Pappus of many persistent, capillary bristles.
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Mark Hyde, Bart Wursten, Petra Ballings, Flora of Zimbabwe |
| Source | http://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=1589 |