Difference between revisions of "Thelesperma filifolium"
Hooker’s J. Bot. Kew Gard. Misc. 1: 252. 1849.
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|name=Coreopsis filifolia | |name=Coreopsis filifolia | ||
|authority=Hooker | |authority=Hooker | ||
| + | |rank=species | ||
| + | |publication_title=Bot. Mag. | ||
| + | |publication_place=63: plate 3505. 1836 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Thelesperma filifolium var. intermedium | |name=Thelesperma filifolium var. intermedium | ||
|authority=(Rydberg) Shinners | |authority=(Rydberg) Shinners | ||
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}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Thelesperma intermedium | |name=Thelesperma intermedium | ||
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|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Thelesperma;Thelesperma filifolium | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Thelesperma;Thelesperma filifolium | ||
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name=Thelesperma filifolium | name=Thelesperma filifolium | ||
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|authority=(Hooker) A. Gray | |authority=(Hooker) A. Gray | ||
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|publication title=Hooker’s J. Bot. Kew Gard. Misc. | |publication title=Hooker’s J. Bot. Kew Gard. Misc. | ||
|publication year=1849 | |publication year=1849 | ||
| − | |special status= | + | |special status=Illustrated |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_499.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | ||
Latest revision as of 20:12, 5 November 2020
Annuals (sometimes persisting), 10–40(–70+) cm. Cauline leaves crowded to ± scattered over proximal 1/2–3/4 of plant heights, internodes mostly 10–35(–50+) mm; lobes mostly linear to filiform, sometimes oblanceolate, 5–30(–55+) × 0.5–1(–3+) mm. Calyculi of 7–8+ linear to narrowly triangular bractlets (2–)4–8+ mm. Ray florets 8; laminae yellow to golden yellow (sometimes proximally suffused with red-brown), 12–20+ mm. Disc corollas red-brown or yellow with red-brown nerves, throats shorter than lobes. Cypselae 3.5–4+ mm; pappi 0.5–1(–2+) mm. 2n = 16, 18.
Phenology: Flowering Mar–Aug(–Oct).
Habitat: Disturbed sites on clays or sandy soils, rocky slopes, often on limestone
Elevation: 10–2200 m
Distribution
Ark., Colo., Kans., La., Miss., Mo., Nebr., N.Mex., Okla., S.Dak., Tex., Wyo., Mexico (Nuevo León).
Discussion
As here circumscribed, Thelesperma filifolium includes plants that others have treated as a distinct species or variety: T. intermedium or T. filifolium var. intermedium, characterized as plants mostly 10–40 cm (versus taller); internodes “relatively short” (versus longer); calyculus bractlets mostly 1/4–1/2 lengths of phyllaries (versus more than 1/2 as long); ray corollas yellow (versus “golden yellow”); disc corollas yellow (versus sometimes red-brown); distribution mostly north and west of the typical form (Colorado, Kansas, Nebraska, New Mexico, w Oklahoma, South Dakota, c and w Texas, Wyoming).
According to A. Cronquist (1980), Thelesperma trifidum (Poiret) Britton has been misapplied (e.g., M. L. Fernald 1950) to T. filifolium.
Selected References
None.