Difference between revisions of "Xanthisma sect. Xanthisma"
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|accepted_name=Xanthisma sect. Xanthisma | |accepted_name=Xanthisma sect. Xanthisma | ||
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|publications= | |publications= | ||
|basionyms= | |basionyms= | ||
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name=Xanthisma sect. Xanthisma | name=Xanthisma sect. Xanthisma | ||
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|rank=section | |rank=section | ||
|parent rank=genus | |parent rank=genus | ||
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|family=Asteraceae | |family=Asteraceae | ||
|illustrator=Yevonn Wilson-Ramsey | |illustrator=Yevonn Wilson-Ramsey | ||
| + | |illustration copyright=Flora of North America Association | ||
|distribution=sc United States. | |distribution=sc United States. | ||
|reference=None | |reference=None | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_874.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Xanthisma | |genus=Xanthisma | ||
Latest revision as of 20:06, 5 November 2020
Annuals, rarely biennials, 20–70 cm; taprooted. Leaf blades pinnatifid to 2-pinnatifid proximally, mid serrate, distal ± entire, teeth or lobes usually with apiculate callosities or cilia, not bristle-tipped. Heads radiate. Involucres turbinate to hemispheric or campanulate. Phyllaries in 3–4 series, appressed, bodies ovate to orbiculate or depressed elliptic, unequal, proximal portions (at least inner) stramineous, stalklike, stiff, distal 1/3–2/3 with a green patch, abruptly enlarged, 2–5 mm wide, apices acuminate to obtuse or broadly rounded, cuspidate or not, not bristle-tipped, faces glabrous. Receptacles: pit borders laciniate, teeth or setae mostly distinct, 0.2–2 mm. Ray corollas yellow. Cypselae dimorphic, narrowly obovoid to oblong, of ray 3-sided, of disc compressed laterally, generally 4-sided, 1.5–2.2 mm, walls thick, ribs 10–24, often obscure, faces sparsely tawny-silky; pappi of tawny, linear, basally flattened bristles 3–7 mm in 2 series. x = (4) 5.
Distribution
sc United States.
Discussion
Species 1.
Selected References
None.