Difference between revisions of "Dimeresia"
in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 1(2): 448. 1886.
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|publication year=1886 | |publication year=1886 | ||
|special status= | |special status= | ||
| − | |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/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V21_448.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Dimeresiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Dimeresiinae | ||
Revision as of 21:37, 16 December 2019
Annuals, 1–3(–5) cm. Stems decumbent to erect. Leaves basal and/or cauline; opposite (crowded, seemingly whorled); subsessile or ± petiolate; blades spatulate to oblanceolate, entire. Heads discoid, in clusters (of 2–5, congested, total heads to 100+). Involucres cylindric to obconic, 2(–4) mm diam. Phyllaries 2(–3) in 1 series (basally distinct or connate, oblong, herbaceous). Ray florets 0. Disc florets 2(–3), bisexual, fertile; corollas white, pink, or purple, tubes slightly shorter than funnelform throats, lobes 5, deltate-ovate. Receptacles minute, epaleate. Cypselae cylindric to clavate, striate, glabrous; pappi falling, of ca. 20 basally connate, setiform to subulate, ± plumose scales (or flattened bristles). x = 7.
Distribution
w United States.
Discussion
Species 1.
Selected References
None.