Difference between revisions of "Orochaenactis"
Contr. U.S. Natl. Herb. 4: 134, plate 10. 1893.
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|publication year=1893 | |publication year=1893 | ||
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| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_1039.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | ||
Revision as of 18:45, 24 September 2019
Annuals, 1–25 cm. Stems erect to spreading, simple or ± branched (very slender). Leaves cauline; opposite (proximal) or alternate; obscurely petiolate or sessile; blades linear to narrowly oblong-oblanceolate, margins entire, faces tomentose to glabrate, gland-dotted. Heads discoid, borne singly or (2–5) in clusters (at stem tips). Involucres cylindric or narrowly turbinate, 3–4(–6) mm diam. Phyllaries persistent, 4–7 in ± 1 series (distinct, oblong, unequal, glandular-puberulent). Receptacles ± flat, ± knobby, epaleate. Ray florets 0. Disc florets 4–9; corollas yellow, lobes 5, short-triangular (anther bases short-sagittate, appendages short-triangular; style branches linear, tapering). Cypselae terete, linear-clavate, narrowly ribbed, minutely glandular-puberulent, glabrescent; pappi falling (in rings), of 11–17 (basally connate) oblanceolate, fringed, obtuse scales. x = 9.
Discussion
Species 1.
Selected References
None.