Difference between revisions of "Helenium elegans"

de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 667. 1836.

Common names: Pretty sneezeweed
Treatment appears in FNA Volume 21. Treatment on page 433. Mentioned on page 428.
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|publication year=1836
 
|publication year=1836
 
|special status=
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V21_1083.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_1083.xml
 
|tribe=Asteraceae tribe Heliantheae
 
|tribe=Asteraceae tribe Heliantheae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae

Revision as of 16:29, 18 September 2019

Annuals, 20–120 cm. Stems usually 1, branched distally, moderately to strongly winged, glabrous or sparsely to moderately hairy. Leaves glabrous or sparsely hairy (basal withered by flowering); proximal and mid blades lanceolate to narrowly elliptic, entire, serrate, or irregularly toothed or lobed; distal blades lanceolate to linear, entire. Heads 20–200+ per plant, in paniculiform arrays. Peduncles 2–14 cm, moderately to densely hairy. Involucres globoid, 5–11 × 5–12(–13) mm. Phyllaries (connate proximally) moderately to densely hairy. Ray florets 10–17, pistillate, fertile; corollas yellow throughout or red-brown to red proximally and yellow distally, 5.5–15(–19) × 2.2–5.5(–8.7) mm. Disc florets 150–700+; corollas yellow proximally, yellow to brown to usually reddish brown distally, 1.5–2.3(–2.5) mm, lobes 5. Cypselae 0.6–1 mm, moderately hairy; pappi of 6–7 entire, non-aristate scales 0.05–0.3(–0.4) mm.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Proximal leaves usually entire, rarely serrate; involucres 5–8 × 5–8 mm Helenium elegans var. elegans
1 Proximal leaves usually irregularly toothed or lobed; involucres 7–11 × 8–12(–13) mm Helenium elegans var. amphibolum