Difference between revisions of "Packera greenei"
Phytologia 49: 47. 1981.
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|name=Senecio greenei | |name=Senecio greenei | ||
|authority=A. Gray | |authority=A. Gray | ||
| + | |rank=species | ||
|publication_title=Proc. Amer. Acad. Arts | |publication_title=Proc. Amer. Acad. Arts | ||
|publication_place=10: 75. 1874 | |publication_place=10: 75. 1874 | ||
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name=Packera greenei | name=Packera greenei | ||
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|authority=(A. Gray) W. A. Weber & Á. Löve | |authority=(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_1312.xml |
|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Packera | |genus=Packera | ||
Revision as of 19:25, 16 December 2019
Perennials, 20–30+ cm; rhizomatous (rhizomes horizontal to erect, not branched), sometimes stoloniferous. Stems 1, irregularly lanate or tomentose. Basal leaves (and proximal cauline) petiolate; blades orbiculate, ovate, oblanceolate, or rhombic, 20–50+ × 20–40+ mm, bases tapering, sometimes obtuse, margins coarsely dentate to crenate-dentate. Cauline leaves gradually to abruptly reduced (petioles broad-winged, clasping, blades obovate, bases tapering, margins irregularly dentate; distal sessile, linear to lanceolate, entire). Heads 1–3+. Peduncles bracteate, lanate or tomentose distally. Calyculi conspicuous. Phyllaries 21, green (tips sometimes deep red), 8–10+ mm, densely tomentose proximally, sparsely tomentose distally. Ray florets 8–10(–13); corolla laminae (red-orange) 8–15+ mm. Disc florets 35–65+; corolla tubes 4–5 mm, limbs 5–6 mm. Cypselae 1.5–2.5 mm, glabrous; pappi 8–11 mm. 2n = 40, 46, 92.
Phenology: Flowering mid May–early Jul.
Habitat: Dry, rocky, usually serpentine soils, open scrub-pine associations
Elevation: 100–1600 m
Discussion
Of conservation concern.
Packera greenei is known from Coast Ranges of northern California. It has relatively large heads and bright orange-red ray corollas; its leaves are usually cyanic abaxially.
Selected References
None.