Difference between revisions of "Packera eurycephala"
Phytologia 49: 46. 1981.
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|name=Senecio eurycephalus | |name=Senecio eurycephalus | ||
|authority=Torrey & A. Gray | |authority=Torrey & A. Gray | ||
| + | |rank=species | ||
|publication_title=Mem. Amer. Acad. Arts, n. s. | |publication_title=Mem. Amer. Acad. Arts, n. s. | ||
|publication_place=4: 109. 1849 | |publication_place=4: 109. 1849 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Packera eurycephala | name=Packera eurycephala | ||
| − | |||
|authority=(Torrey & A. Gray) W. A. Weber & Á. Löve | |authority=(Torrey & A. Gray) W. A. Weber & Á. Löve | ||
|rank=species | |rank=species | ||
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|publication year=1981 | |publication year=1981 | ||
|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_1304.xml |
|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Packera | |genus=Packera | ||
Revision as of 19:25, 16 December 2019
Perennials, 20–50+ cm, taprooted (caudices branched, ascending to erect, woody). Stems 1 or, usually, multiple, clustered, densely tomentose to glabrescent. Basal leaves (soon withering), petiolate; blades lyrate (lateral lobes 2–6+ pairs), ovate, obovate, or spatulate, 70–100+ × 20–30+ mm, bases tapering, ultimate margins irregularly and coarsely serrate-dentate. Cauline leaves gradually reduced (± petiolate, proximal and mid similar to basal, terminal lobes smaller than laterals; distal sessile, incised). Heads 5–20+ in open or compact (rarely), cymiform arrays. Peduncles bracteate, sparsely to densely lanate-tomentose. Calyculi inconspicuous (bractlets tomentose). Phyllaries 13 or 21, green (tips sometimes yellow), 8–10+ mm, densely tomentose proximally, glabrescent distally. Ray florets 8 or 13; corolla laminae 10–15 mm. Disc florets 35–50+; corolla tubes 3.5–4.5 mm, limbs 2.5–3.5 mm. Cypselae 1–1.5 mm, glabrous; pappi 6–7 mm. 2n = 46.
Distribution
w United States.
Discussion
Varieties 2 (2 in the flora).
Selected References
None.
Key
| 1 | Stems (1–)2–6; leaf blades: margins usually serrate-dentate, sometimes deeply dissected, midribs winged | Packera eurycephala var. eurycephala |
| 1 | Stems 1; leaf blades finely dissected, lateral lobes also dissected, midribs not or weakly winged | Packera eurycephala var. lewisrosei |