Difference between revisions of "Tephroseris yukonensis"
Folia Geobot. Phytotax. 8: 174. 1973.
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|name=Senecio yukonensis | |name=Senecio yukonensis | ||
|authority=A. E. Porsild | |authority=A. E. Porsild | ||
| + | |rank=species | ||
|publication_title=Canad. Field-Naturalist | |publication_title=Canad. Field-Naturalist | ||
|publication_place=64: 44. 1950 | |publication_place=64: 44. 1950 | ||
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|name=Senecio alaskanus | |name=Senecio alaskanus | ||
|authority=Hultén | |authority=Hultén | ||
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}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Tephroseris;Tephroseris yukonensis | |hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Tephroseris;Tephroseris yukonensis | ||
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name=Tephroseris yukonensis | name=Tephroseris yukonensis | ||
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|authority=(A. E. Porsild) Holub | |authority=(A. E. Porsild) Holub | ||
|rank=species | |rank=species | ||
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|publication year=1973 | |publication year=1973 | ||
|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_1383.xml |
|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Tephroseris | |genus=Tephroseris | ||
Revision as of 19:26, 16 December 2019
Perennials, 10–30(–40) cm (proximal stems and leaves floccose-tomentose, becoming glabrate, especially on the adaxial leaf faces; distal stems and phyllaries floccose-tomentose, hairs yellow; rhizomes creeping). Stems single or loosely clustered. Leaves basal and cauline (basal often withering before flowering); petioles unwinged or weakly so, 2–5 cm; blades ovate to broadly lanceolate, 2–5 × 1–3 cm, margins subentire to dentate or wavy (proximal cauline petioles usually winged, 0.5–1.5 cm, blades narrowly ovate to lanceolate, 2–4+ × 0.5–2 cm, margins subentire to wavy; mid and distal cauline smaller, clasping, bractlike). Heads 1–4(–6+). Involucres ± abruptly contracted to peduncles. Phyllaries mostly (13–)21, purplish (at least distally), 8–10(–12) mm. Ray florets (0) or 13–21; corolla laminae to 10 mm. Disc florets 40–60; corollas ochroleucous or white. Cypselae glabrous; pappi white. 2n = ca. 46 (48?).
Phenology: Flowering Jun–Aug.
Habitat: Localized in moist tundra meadows
Elevation: 0–2000 m
Discussion
Selected References
None.