Difference between revisions of "Rigiopappus"
Proc. Amer. Acad. Arts 6: 548. 1865.
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|discussion=<p>Species 1.</p> | |discussion=<p>Species 1.</p> | ||
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|family=Asteraceae | |family=Asteraceae | ||
|illustrator=Yevonn Wilson-Ramsey | |illustrator=Yevonn Wilson-Ramsey | ||
| + | |illustration copyright=Flora of North America Association | ||
|distribution=w North America. | |distribution=w North America. | ||
| − | |reference= | + | |reference=None |
|publication title=Proc. Amer. Acad. Arts | |publication title=Proc. Amer. Acad. Arts | ||
|publication year=1865 | |publication year=1865 | ||
|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/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V20_71.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Rigiopappus | |genus=Rigiopappus | ||
Revision as of 19:30, 16 December 2019
Annuals, 5–30+ cm (taprooted). Stems usually erect, simple or branched (laterals often overtopping main stems), pilosulous to hirtellous, glabrate. Leaves mostly cauline (at flowering); alternate; ± sessile; blades (1- or 3-nerved) narrowly oblanceolate to lance-linear or linear, margins entire, faces glabrous or sparsely hirsutulous. Heads radiate, borne singly. Involucres ± cylindric to turbinate, 1–3(–5+) mm diam. Phyllaries 11–20+ in 2+ series, 1-nerved (flat) linear to lanceolate or subulate, subequal (distinct), herbaceous, margins scarious, faces hirsutulous (± navicular, each of the inner usually ± enfolding a floret). Receptacles ± flat, obscurely pitted, sparsely paleate (between ray and disc florets, paleae resembling inner phyllaries). Ray florets 3–13+ (usually 3, 5, or 8), pistillate, fertile; corollas yellowish, often tinged with red or purple (laminae inconspicuous). Disc florets 5–70+, bisexual, fertile; corollas pale yellow, sometimes tipped with purple, tubes shorter than narrowly funnelform throats, lobes 2–4, erect, ± deltate; style-branch appendages subulate to filiform. Cypselae ± cylindric to fusiform, little, if at all, compressed, transversely rugulose, all minutely hirsutulous or ray cypselae glabrous or nearly so; pappi persistent, usually of 3–5 subulate scales (sometimes much reduced or 0 on ray cypselae). x = 9.
Distribution
w North America.
Discussion
Species 1.
Selected References
None.