Difference between revisions of "Xanthium spinosum"
Sp. Pl. 2: 987. 1753.
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|name=Xanthium ambrosioides | |name=Xanthium ambrosioides | ||
|authority=Hooker & Arnott | |authority=Hooker & Arnott | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Xanthium spinosum var. inerme | |name=Xanthium spinosum var. inerme | ||
|authority=Bel | |authority=Bel | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ambrosiinae;Xanthium;Xanthium spinosum | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ambrosiinae;Xanthium;Xanthium spinosum | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Xanthium spinosum | name=Xanthium spinosum | ||
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|authority=Linnaeus | |authority=Linnaeus | ||
|rank=species | |rank=species | ||
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|publication year=1753 | |publication year=1753 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V21_28.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | ||
Revision as of 19:35, 16 December 2019
Plants 10–60(–120+) cm; nodal spines usually in pairs, simple or 2–3-partite, 15–30+ mm. Leaves: petioles 1–15(–25+) mm; blades ± ovate to lanceolate or lance-linear, 4–8(–12+) × 1–3(–5+) cm, often pinnately 3(–7+)-lobed, abaxial faces gray to white, densely strigose. Burs 10–12(–15+) mm. 2n = 36.
Phenology: Flowering Jul–Oct.
Habitat: Damp or seasonally wet, alkaline soils, waste places, margins of agriculture
Elevation: 10–1000 m
Distribution
N.B., Ont., Que., Sask., Ala., Ariz., Calif., Colo., Conn., Del., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., Ohio, Oreg., Pa., R.I., S.C., Tenn., Tex., Utah, Va., Wash., W.Va., Mexico, Central America, South America, widely established in Old World.
Discussion
Some authors have contended that Xanthium spinosum originated in South America and is introduced and/or naturalized everywhere else that it is found.
Selected References
None.