| 词条 | Euthamia graminifolia |
| 释义 |
|name = Grass-leaved goldenrod |image = Euthamia graminifolia 001.JPG |image_caption = Flowering plant |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Astereae |genus = Euthamia |binomial = Euthamia graminifolia | binomial_authority = (L.) Nutt. |synonyms_ref=[1] |synonyms={{collapsible list|bullets = true |title=Synonymy |Aster euthamia Kuntze |Aster graminifolius (L.) Kuntze |Chrysocoma graminifolia L. |Chrysocoma virginiana Hort. ex DC. |Diplemium carolinianum Raf. |Erigeron carolinensis Crantz |Erigeron carolinianus L. |Euthamia caroliniana (L.) Greene ex Porter & Britton |Euthamia fastigiata Bush |Euthamia floribunda Greene |Euthamia tenuifolia (Pursh) Nutt.[2] |Euthamia galetorum Greene |Euthamia hirtella Greene |Euthamia hirtipes (Fernald) Sieren |Euthamia media Greene |Euthamia microcephala (Nutt.) Greene |Euthamia microphylla Greene |Euthamia minor (Michx.) Greene |Euthamia nuttallii Greene |Euthamia remota Greene |Solidago caroliniana (L.) Britton, Sterns & Poggenb. |Solidago galetorum (Greene) Friesner |Solidago graminifolia (L.) Salisb. |Solidago lanceolata L. |Solidago microcephala (Greene) Bush |Solidago microphylla (Greene) Bush 1918 not Engelm. ex Small 1903 |Solidago minor (Michx.) Fernald |Solidago moseleyi Fernald |Solidago tenuifolia Pursh |}}}}Euthamia graminifolia (grass-leaved goldenrod or flat-top goldentop) is a North American species of plants in the daisy family.[3] It is native to much of Canada (from Newfoundland to British Columbia), and the northern and eastern United States (primarily the Northeast, the Great Lakes region, and the Ohio Valley, with additional populations in the Southeast, the Great Plains, and a few scattered locations in the Pacific Northwest).[3][4] There are also introduced populations in Europe and Asia.[5] DescriptionEuthamia graminifolia is a herbaceous plant on thin, branching stems. Leaves are alternate, simple, long and narrow much like grass leaves (hence the name of the species). One plant can produce many small, yellow flower heads flat-topped arrays sometimes as much as 30 cm (1 foot) across. Each head has 7-35 ray florets surrounding 3-13 disc florets. The species is very common in fallow fields, waste places, fencerows, and vacant lots in many places.[3]References1. ^The Plant List, Euthamia graminifolia (L.) Nutt. 2. ^The Plant List, Euthamia tenuifolia (Pursh) Nutt. 3. ^1 2 {{citation | contribution-url = http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242416546 | contribution = 2. Euthamia graminifolia (Linnaeus) Nuttall | title = Flora of North America }} 4. ^Biota of North America Program, 2014 county distribution map 5. ^Altervista Flora Italiana, Verga d'oro con foglie da gramigna, Euthamia graminifolia (L.) Nutt. External links
3 : Euthamia|Flora of North America|Plants described in 1753 |
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