Difference between revisions of "Aphanostephus skirrhobasis"

(de Candolle) Trelease

Rep. (Annual) Arkansas Geol. Surv. 4: 191. 1891.

Common names: Arkansas lazydaisy
Basionym: Keerlia skirrhobasis de Candolle
Treatment appears in FNA Volume 20. Treatment on page 352. Mentioned on page 351.
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|publication year=1891
 
|publication year=1891
 
|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/V20_808.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/V20_808.xml
 
|tribe=Asteraceae tribe Astereae
 
|tribe=Asteraceae tribe Astereae
 
|genus=Aphanostephus
 
|genus=Aphanostephus

Revision as of 16:27, 18 September 2019

Annuals, 5–45 cm; vestiture hirsuto-pilose and/or puberulent, stem hairs spreading to deflexed, 0.1–0.3 mm. Phyllary apices acute to short-acuminate. Ray florets (10–)25–45. Disc floret corollas: bases (mature) bulbous-swollen, indurate. Cypselae: hairs apically 1-directionally coiled; pappi usually coroniform, uneven, rarely of acute to awn-tipped scales 0.2–2 mm.

Discussion

Varieties 3 (3 in the flora).

Selected References

None.

Key

1 Leaves thickened, densely, almost felty gray-hairy; sand dunes along Gulf Coast Aphanostephus skirrhobasis var. thalassius
1 Leaves not strongly thickened or felty gray-hairy; sandy soils, interior localities > 2
2 Pappi of acute or awn-tipped scales or setiform scales 0.4–2 mm Aphanostephus skirrhobasis var. kidderi
2 Pappi coroniform, uneven, ciliate, 0.1–0.3 mm, rarely of awn-tipped scales Aphanostephus skirrhobasis var. skirrhobasis