| 词条 | Euphorbia heterophylla |
| 释义 |
|name = Painted euphorbia |image = Euphorbia heterophylla with cyathia.JPG |display_parents=3 |genus = Euphorbia |species = heterophylla |authority = L. |synonyms =
|synonyms_ref = [1] }} Euphorbia heterophylla, also known under the common names of (Mexican) fireplant,[2] painted euphorbia,[2] Japanese poinsettia,[2] desert poinsettia, wild poinsettia, fire on the mountain, paintedleaf,[2] painted spurge,[2] milkweed,[2] and kaliko plant, is a plant belonging to the Euphorbiaceae or spurge family. DistributionEuphorbia heterophylla is native to tropical and subtropical America but is now widespread throughout the tropics. Many herbicides fail to control it and hence it has spread rapidly in many parts of the world.[3] This plant has been introduced to South and Southeast Asia as an Ornamental plant, having become a weed in India and Thailand, where it has invaded cotton fields and other agricultural terrain.{{citation needed | date = July 2018}} DescriptionEuphorbia heterophylla grows between 30 and 100cm tall and has hollow stems that may be branched or simple with angular ribs. The leaves of the plant have variable shapes within and between populations. The lower leaves are alternate whereas the upper leaves are opposite and commonly have a whitish or bright red base.[4] Within 30 days of emergence the plant may flower with ripe seeds being formed between 25 and 30 days later. It is pollinated by insects which are attracted to large amounts of nectar the plant produces.[4] The stalk exudes a toxic milky white latex. The cyathia or false flowers, are located in clusters at the head of the stalk and are yellowish green. They have no petals, the red color being part of the young leaves' coloration. The fruits are small, segmented capsules. This plant often loses its coloration when it grows wild as a weed. There are populations that have been identified to have resistance to specific herbicides in South America.[5] ToxicityToxicity is documented in most members of the genus Euphorbia. Individuals sensitive to latex are known to have strong reactions, including dermatitis and anaphylaxis, to the latex exuded by this plant. References{{Commons category}}1. ^{{cite web|url=http://www.theplantlist.org/tpl/record/kew-80087|title=The Plant List: A Working List of All Plant Species}} 2. ^1 2 3 4 5 {{GRIN | accessdate = 10 January 2018}} 3. ^{{Cite journal|last=Wilson|first=A. K.|date=1981|title=Euphorbia heterophylla:a Review of Distribution, Importance and Control|journal=Tropical Pest Management|language=en|volume=27|issue=1|pages=32–38|doi=10.1080/09670878109414169|issn=0143-6147}} 4. ^1 {{Cite web|url=http://www.fao.org/agriculture/crops/thematic-sitemap/theme/biodiversity/weeds/listweeds/eup-het/en/|title=Plant Production and Protection Division: Euphorbia heterophylla|website=www.fao.org|language=en|access-date=2018-07-17}} 5. ^Herbicide Resistant Weeds External links
14 : Euphorbia|Flora of Central America|Flora of the Caribbean|Flora of Mexico|Flora of the Southeastern United States|Flora of northern South America|Flora of southern South America|Flora of western South America|Flora of Brazil|Flora of Florida|Flora of Texas|Flora of the Yucatán Peninsula|Ruderal species|Plants described in 1753 |
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