Difference between revisions of "Senecio pseudoarnica"
Linnaea 6: 240. 1831.
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|name=Arnica maritima | |name=Arnica maritima | ||
|authority=Linnaeus | |authority=Linnaeus | ||
| + | |rank=species | ||
|publication_title=Sp. Pl. | |publication_title=Sp. Pl. | ||
|publication_place=2: 884. 1753, | |publication_place=2: 884. 1753, | ||
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|name=S. pseudoarnica var. rollandii | |name=S. pseudoarnica var. rollandii | ||
|authority=Victorin | |authority=Victorin | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=S. rollandii | |name=S. rollandii | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Senecio;Senecio pseudoarnica | |hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Senecio;Senecio pseudoarnica | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Senecio pseudoarnica | name=Senecio pseudoarnica | ||
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|authority=Lessing | |authority=Lessing | ||
|rank=species | |rank=species | ||
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|publication year=1831 | |publication year=1831 | ||
|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_1276.xml |
|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Senecio | |genus=Senecio | ||
Revision as of 20:25, 16 December 2019
Perennials, (15–)20–60(–100) cm (caudices erect). Herbage arachno-tomentose to sericeous-lanate (especially on abaxial faces of phyllaries), unevenly glabrescent. Stems single (turgid). Leaves evenly distributed (proximal withering before flowering); subsessile or petiolate; blades obovate to oblanceolate, 5–15(–25) × 2–6(–10) cm, bases tapered, margins serrate-dentate to denticulate or subentire (distal leaves slightly smaller). Heads 1–5(–15+) in corymbiform arrays (involucres notably large, 20–40 mm diam.). Calyculi of 6–10 linear bractlets (longest nearly equaling phyllaries). Phyllaries ± 21, 8–15 mm (sometimes purplish or pinkish-tinged), tips greenish. Ray florets usually ± 21, rarely 0; corolla laminae 20–25 mm. Cypselae glabrous. 2n = 40.
Phenology: Flowering summer.
Habitat: Sandy-gravelly ocean shores and upper beaches
Elevation: 0 m
Distribution
St. Pierre and Miquelon, B.C., N.B., Nfld. and Labr., N.S., Que., Alaska, Maine, ne Asia.
Discussion
Rayless individuals of Senecio pseudoarnica have been recognized as var. rollandii or forma rollandii (Victorin) Fernald; they are not otherwise distinctive.
Selected References
None.