Difference between revisions of "Packera cana"
Phytologia 49: 46. 1981.
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|name=Senecio canus | |name=Senecio canus | ||
|authority=Hooker | |authority=Hooker | ||
| + | |rank=species | ||
|publication_title=Fl. Bor.-Amer. | |publication_title=Fl. Bor.-Amer. | ||
|publication_place=1: 333, plate 116. 1834 | |publication_place=1: 333, plate 116. 1834 | ||
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|name=Senecio canus var. eradiatus | |name=Senecio canus var. eradiatus | ||
|authority=D. C. Eaton | |authority=D. C. Eaton | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio canus var. purshianus | |name=Senecio canus var. purshianus | ||
|authority=(Nuttall) A. Nelson | |authority=(Nuttall) A. Nelson | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio convallium | |name=Senecio convallium | ||
|authority=Rydberg | |authority=Rydberg | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio hallii | |name=Senecio hallii | ||
|authority=Greene | |authority=Greene | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio hallii var. discoidea | |name=Senecio hallii var. discoidea | ||
|authority=W. A. Weber | |authority=W. A. Weber | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio harbourii | |name=Senecio harbourii | ||
|authority=Greenman | |authority=Greenman | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio howellii | |name=Senecio howellii | ||
|authority=Nuttall | |authority=Nuttall | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio laramiensis | |name=Senecio laramiensis | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio oreopolus | |name=Senecio oreopolus | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Senecio purshianus | |name=Senecio purshianus | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Packera;Packera cana | |hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Packera;Packera cana | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Packera cana | name=Packera cana | ||
| − | |||
|authority=(Hooker) W. A. Weber & Á. Löve | |authority=(Hooker) 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_1291.xml |
|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Packera | |genus=Packera | ||
Revision as of 19:25, 16 December 2019
Perennials, 10–30+ cm; rhizomatous (rhizomes branched, suberect, stout). Stems 1 (per rosette, rosettes clustered), densely lanate or canescent. Basal leaves (and proximal cauline) petiolate; blades ovate or elliptic to lanceolate, 25–50+ × 10–30 mm, bases tapering, margins entire or irregularly undulate to weakly dentate (abaxial faces persistently lanate, adaxial lanate to subglabrescent). Cauline leaves gradually reduced (petiolate or sessile, then weakly clasping; elliptic to lanceolate, entire or weakly dentate). Heads 8–15+ in corymbiform arrays. Peduncles bracteate, usually densely lanate to floccose-tomentose (sometimes subglabrescent). Calyculi inconspicuous (bractlets tomentose). Phyllaries 13 or 21, green, 5–8+ mm, densely tomentose. Ray florets 8–10 (or 13); corolla laminae 8–10+ mm. Disc florets 35–50+; corolla tubes 2.5–3.5 mm, limbs 3.5–4.5 mm. Cypselae 2.5–3.5+ mm, glabrous; pappi 4.5–7 mm. 2n = 46, 92.
Phenology: Flowering late Jun (south)–mid Aug (north).
Habitat: Open plains and sagebrush associations, dry rocky slopes and crevices in granitic and limestone outcrops
Elevation: 200–3700 m
Distribution
Alta., B.C., Man., Sask., Ariz., Calif., Colo., Idaho, Kans., Minn., Mont., Nebr., Nev., N.Mex., N.Dak., Oreg., S.Dak., Utah, Wash., Wyo.
Discussion
Packera cana is found in a wide variety of habitats and in a wide range of elevations throughout the western Cordillera and into the High Plains. Morphology is relatively uniform throughout its range except that alpine specimens are notably dwarfed and are often mistaken for P. werneriifolia, which differs by its consistently scapiform habit.
Selected References
None.