Difference between revisions of "Thelesperma ambiguum"

A. Gray

Proc. Amer. Acad. Arts 19: 16. 1883.

Synonyms: Thelesperma fraternum Shinners Thelesperma megapotamicum var. ambiguum (A. Gray) Shinners
Treatment appears in FNA Volume 21. Treatment on page 201. Mentioned on page 200.
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|name=Thelesperma fraternum
 
|name=Thelesperma fraternum
 
|authority=Shinners
 
|authority=Shinners
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}} {{Treatment/ID/Synonym
 
|name=Thelesperma megapotamicum var. ambiguum
 
|name=Thelesperma megapotamicum var. ambiguum
 
|authority=(A. Gray) Shinners
 
|authority=(A. Gray) Shinners
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|elevation=10–200 m
 
|elevation=10–200 m
 
|distribution=N.Mex.;Tex.;Mexico (Nuevo León;Tamaulipas).
 
|distribution=N.Mex.;Tex.;Mexico (Nuevo León;Tamaulipas).
|discussion=<p>Thelesperma ambiguum is similar to T. megapotamicum; it may be better treated as a variety of the latter.</p>
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|discussion=<p><i>Thelesperma ambiguum</i> is similar to <i>T. megapotamicum</i>; it may be better treated as a variety of the latter.</p>
 
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|publication year=1883
 
|publication year=1883
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V21_494.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_494.xml
 
|tribe=Asteraceae tribe Heliantheae
 
|tribe=Asteraceae tribe Heliantheae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae

Revision as of 16:35, 18 September 2019

Perennials or subshrubs, 10–30(–50) cm. Cauline leaves crowded to ± scattered over proximal 1/3–1/2 of plant heights, internodes mostly 5–50(–80+) mm; lobes mostly linear to filiform, sometimes oblanceolate, (5–)15–75 × 0.5–1(–2) mm. Calyculi of 3–5+ ovate to oblong bractlets 1–3 mm. Ray florets usually 8, rarely 0; laminae yellow, 4–8(–12+) mm. Disc corollas red-brown, throats shorter than lobes. Cypselae 4–5+ mm; pappi usually 1.5–2+ mm, rarely 0. 2n = 44.


Phenology: Flowering Mar–Jun.
Habitat: Disturbed sites on sands or clays
Elevation: 10–200 m

Distribution

V21-494-distribution-map.gif

N.Mex., Tex., Mexico (Nuevo León, Tamaulipas).

Discussion

Thelesperma ambiguum is similar to T. megapotamicum; it may be better treated as a variety of the latter.

Selected References

None.

Lower Taxa

None.