Difference between revisions of "Sonchus tenerrimus"
Sp. Pl. 2: 794. 1753.
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name=Sonchus tenerrimus | name=Sonchus tenerrimus | ||
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|authority=Linnaeus | |authority=Linnaeus | ||
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|publication year=1753 | |publication year=1753 | ||
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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/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V19_382.xml |
|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Sonchus | |genus=Sonchus | ||
Revision as of 19:18, 16 December 2019
Annual, biennials, or perennials, 10–80 cm. Stem bases soft to hard, herbaceous, often hollow. Leaves: blades of mid cauline oblong, 3–20 × 2–6 cm, bases auriculate, auricles ovate to lanceolate or linear, ± straight, obtuse to acute, margins usually pinnately lobed, lobes ± rhombic to lanceolate (constricted at bases) or ± linear, terminals ± equaling laterals, entire or dentate. Peduncles usually setose- to stipitate-glandular, often tomentose as well, sometimes glabrous. Involucres 10–12+ mm. Phyllaries usually setose- to stipitate-glandular, sometimes tomentose as well. Corollas: ligules longer than tubes. Cypselae reddish brown, oblanceoloid, 2.5–3.5 mm, ribs 1–3 on each face, faces transversely rugulose or tuberculate across and between ribs; pappi 5–8 mm. 2n = 14.
Phenology: Flowering Mar–Jun.
Habitat: Disturbed sites, often on ballast
Elevation: 0–200 m
Distribution
Calif., s Europe, w Asia, n Africa.
Discussion
Sonchus tenerrimus was known historically on ballast from Alabama, Pennsylvania (Philadelphia), New Jersey, New York, and, possibly, Quebec.
Selected References
None.