Difference between revisions of "Parthenium integrifolium"
Sp. Pl. 2: 988. 1753.
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|name=Parthenium auriculatum | |name=Parthenium auriculatum | ||
|authority=Britton | |authority=Britton | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Parthenium hispidum | |name=Parthenium hispidum | ||
|authority=Rafinesque | |authority=Rafinesque | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Parthenium hispidum var. auriculatum | |name=Parthenium hispidum var. auriculatum | ||
|authority=(Britton) Rollins | |authority=(Britton) Rollins | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Parthenium integrifolium var. auriculatum | |name=Parthenium integrifolium var. auriculatum | ||
|authority=(Britton) Cornelius ex Cronquist | |authority=(Britton) Cornelius ex Cronquist | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Parthenium integrifolium var. henryanum | |name=Parthenium integrifolium var. henryanum | ||
|authority=Mears | |authority=Mears | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Parthenium integrifolium var. hispidum | |name=Parthenium integrifolium var. hispidum | ||
|authority=(Rafinesque) Mears | |authority=(Rafinesque) Mears | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Parthenium integrifolium var. mabryanum | |name=Parthenium integrifolium var. mabryanum | ||
|authority=Mears | |authority=Mears | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Parthenium radfordii | |name=Parthenium radfordii | ||
|authority=unknown | |authority=unknown | ||
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|elevation=10–500 m | |elevation=10–500 m | ||
|distribution=Ala.;Ark.;Conn.;Ga.;Ill.;Ind.;Iowa.;Kans.;Ky.;La.;Mass.;Mich.;Minn.;Miss.;Mo.;N.Y.;N.C.;Ohio;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.;W.Va.;Wis. | |distribution=Ala.;Ark.;Conn.;Ga.;Ill.;Ind.;Iowa.;Kans.;Ky.;La.;Mass.;Mich.;Minn.;Miss.;Mo.;N.Y.;N.C.;Ohio;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.;W.Va.;Wis. | ||
| − | |discussion=<p>As evidenced by the synonymy, Parthenium integrifolium as here circumscribed has been variously partitioned by other taxonomists. For the present, I see no justification for segregating species from, or for formal recognition of infraspecific taxa within P. integrifolium.</p> | + | |discussion=<p>As evidenced by the synonymy, <i>Parthenium integrifolium</i> as here circumscribed has been variously partitioned by other taxonomists. For the present, I see no justification for segregating species from, or for formal recognition of infraspecific taxa within <i>P. integrifolium</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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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/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_34.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | ||
Revision as of 15:34, 18 September 2019
Perennials, 30–60(–100+) cm. Leaf blades ovate to lanceolate, 30–350+ × 20–120+ mm, margins usually crenate to serrate, sometimes coarsely toothed or somewhat lobed (then mostly toward bases), faces hispid to hirtellous or ± scabrous, gland-dotted. Heads radiate, borne in corymbiform to paniculiform arrays. Peduncles 1–8(–12+) mm. Phyllaries: outer 5(–6) lanceolate to broadly ovate, 3–5 mm, inner 5(–6) ± orbiculate, 4–6 mm. Pistillate florets 5(–6); corolla laminae ovate to oblong or orbiculate, 1–2+ mm. Disc florets 15–35+. Cypselae ± obovoid, 3–4+ mm; pappus-like enations 0 or 2(–4), erect to spreading, ± subulate or threadlike, fragile, 0.3–0.6+ mm. 2n = 72.
Phenology: Flowering May–Sep.
Habitat: Glades and barrens, prairies, disturbed sites
Elevation: 10–500 m
Distribution
Ala., Ark., Conn., Ga., Ill., Ind., Iowa., Kans., Ky., La., Mass., Mich., Minn., Miss., Mo., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va., Wis.
Discussion
As evidenced by the synonymy, Parthenium integrifolium as here circumscribed has been variously partitioned by other taxonomists. For the present, I see no justification for segregating species from, or for formal recognition of infraspecific taxa within P. integrifolium.
Selected References
None.