View source for Psilocarphus oregonus

{{Treatment/ID
|accepted_name=Psilocarphus oregonus
|accepted_authority=Nuttall
|publications={{Treatment/Publication
|title=Trans. Amer. Philos. Soc., n. s.
|place=7: 341. 1840
|year=1840
}}
|common_names=Oregon woollyheads or woolly marbles
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Gnaphalieae;Psilocarphus;Psilocarphus oregonus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Gnaphalieae]]</div><div class="higher-taxon"><small>genus</small>[[Psilocarphus]]</div><div class="higher-taxon"><small>species</small>[[Psilocarphus oregonus]]</div></div>
|volume=Volume 19
|mention_page=page 457, 470
|treatment_page=page 459
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>silvery to whitish, densely sericeous to somewhat lanuginose. <b>Stems</b> (1–)2–10, ascending to ± prostrate; proximal internode lengths mostly 0.5–1.5(–2) times leaf lengths. <b>Capitular</b> leaves ± erect, appressed to heads, linear to narrowly oblanceolate, widest in distal 2/3, longest 12–20 mm, lengths mostly 6–12 times widths, (3–)3.5–5 times head heights. <b>Heads</b> ± spheric, largest 4–6 mm. <b>Receptacles</b> unlobed. <b>Pistillate</b> paleae individually visible through indument, longest mostly 1.5–2.7 mm. <b>Staminate</b> corollas 0.7–1.4 mm, lobes mostly 4. <b>Cypselae</b> narrowly ± cylindric, terete, 0.6–1.2 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering and fruiting late Mar–mid Aug.
|habitat=Seasonally inundated or flooded clay soils (vernal pool margins, drainages, moist rocky slopes)
|elevation=10–1800(–2400) m
|distribution=Calif.;Idaho;Nev.;Oreg.;Wash.
|discussion=<p><i>Psilocarphus oregonus</i> occurs from west-central California through most of Oregon to southeastern Washington, western Idaho, and northern <i>Nevada</i>. Relatively narrow-leaved, montane forms of <i>P. tenellus</i> account for reports of <i>P. oregonus</i> from the southern Sierra <i>Nevada</i> to Baja California; further study may show these to be intermediates between the two taxa.</p><!--
--><p>A malformed plant collected in Merced County, California, appears to have been a sterile hybrid between <i>P. oregonus</i> and <i>Hesperevax caulescens</i> (J. D. Morefield 1992c).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Psilocarphus oregonus
|author=
|authority=Nuttall
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering and fruiting late Mar–mid Aug.
|habitat=Seasonally inundated or flooded clay soils (vernal pool margins, drainages, moist rocky slopes)
|elevation=10–1800(–2400) m
|distribution=Calif.;Idaho;Nev.;Oreg.;Wash.
|reference=None
|publication title=Trans. Amer. Philos. Soc., n. s.
|publication year=1840
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V19_763.xml
|tribe=Asteraceae tribe Gnaphalieae
|genus=Psilocarphus
|species=Psilocarphus oregonus
}}<!--

-->[[Category:Treatment]][[Category:Psilocarphus]]