Difference between revisions of "Vernonia arkansana"
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 7: 264. 1838.
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|publication year=1838 | |publication year=1838 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V19_252.xml |
|tribe=Asteraceae tribe Vernonieae | |tribe=Asteraceae tribe Vernonieae | ||
|genus=Vernonia | |genus=Vernonia | ||
Revision as of 20:35, 27 May 2020
Plants 8–12(–20) dm. Stems scabrellous to pilosulous, glabrescent. Leaves mostly cauline; blades lance-linear, 6–14(–20) cm × 7–15(–25) mm, l/w = 7–10(–18), abaxially scabrellous (hairs awl-shaped), resin-gland-dotted, adaxially scaberulous, glabrescent, resin-gland-dotted. Heads in ± corymbiform arrays. Peduncles 2–5 cm. Involucres ± hemispheric, 11–15 × 11–15 mm. Phyllaries (50–)60–70+ in 5–6 series, scabrellous (and resin-gland-dotted), margins ciliolate, the outer lance-ovate, 3–8+ mm, inner lanceolate, 12–15 mm, tips subulate to filiform. Florets 50–100+. Cypselae 3–5 mm; pappi fuscous to purplish, outer scales 25–30+, 0.5–1 mm, contrasting with 25–30+, 5–7 mm inner bristles. 2n = 34.
Phenology: Flowering Aug–Oct.
Habitat: Leas, roadsides, stream banks, in sand or on limestone
Elevation: 200–300 m
Distribution
Ark., Kans., Mo., Okla.
Discussion
Vernonia arkansana was published in April, V. crinita in October 1838.
Selected References
None.