View source for Packera layneae

{{Treatment/ID
|accepted_name=Packera layneae
|accepted_authority=(Greene) W. A. Weber & Á. Löve
|publications={{Treatment/Publication
|title=Phytologia
|place=49: 47. 1981
|year=1981
}}
|common_names=Layne’s ragwort
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}
|basionyms={{Treatment/ID/Basionym
|name=Senecio layneae
|authority=Greene
|rank=species
|publication_title=Bull. Torrey Bot. Club
|publication_place=10: 87. 1883
}}
|synonyms={{Treatment/ID/Synonym
|name=Senecio fastigiatus var. layneae
|authority=(Greene) A. Gray
|rank=variety
}}
|hierarchy=Asteraceae;Asteraceae tribe Senecioneae;Packera;Packera layneae
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Senecioneae]]</div><div class="higher-taxon"><small>genus</small>[[Packera]]</div><div class="higher-taxon"><small>species</small>[[Packera layneae]]</div></div>
|volume=Volume 20
|mention_page=page 577, 591
|treatment_page=page 590
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 40–70+ cm; taprooted (caudices erect to suberect, branched, stout). <b>Stems</b> 1 or 3–4+, clustered, sparsely tomentose to glabrescent. <b>Basal</b> leaves (and proximal cauline, relatively thick and turgid) petiolate; blades narrowly elliptic or lanceolate to oblanceolate, 40–70+ × 5–20+ mm, bases tapering, margins entire or subentire to weakly and irregularly dentate (especially at apices). <b>Cauline</b> leaves gradually reduced (distal sessile, bractlike). <b>Heads</b> 5–12+ in open, cymiform arrays. <b>Peduncles</b> bracteate (bractlets usually red-tipped), sparsely tomentose to glabrate. <b>Calyculi</b> conspicuous (bractlets red-tipped). <b>Phyllaries</b> 13 or 21, dark green proximally, becoming light green distally (tips red), 7–11+ mm, floccose-tomentose proximally. <b>Ray</b> florets 5 or 8; corolla laminae 12–16 mm. <b>Disc</b> florets 50–60+; corolla tubes 3.5–4.5 mm, limbs 4.5–5.5 mm. <b>Cypselae</b> 2.5–3.5 mm, glabrous; pappi 7–8 mm. <b>2n</b> = 92.</span><!--

-->{{Treatment/Body
|phenology=Flowering early May–early Jul.
|habitat=Openings, disturbed areas, in chaparral, serpentine soils
|elevation=300–900 m
|distribution=Calif.
|discussion=<p>Of conservation concern.</p><!--
--><p><i>Packera layneae</i> is known only from the foothills of the western slope of the Sierra <i>Nevada</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Packera layneae
|authority=(Greene) W. A. Weber & Á. Löve
|rank=species
|parent rank=genus
|synonyms=Senecio fastigiatus var. layneae
|basionyms=Senecio layneae
|family=Asteraceae
|phenology=Flowering early May–early Jul.
|habitat=Openings, disturbed areas, in chaparral, serpentine soils
|elevation=300–900 m
|distribution=Calif.
|reference=None
|publication title=Phytologia
|publication year=1981
|special status=Endemic;Conservation concern
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_1318.xml
|tribe=Asteraceae tribe Senecioneae
|genus=Packera
|species=Packera layneae
}}<!--

-->[[Category:Treatment]][[Category:Packera]]