View source for Psilostrophe cooperi

{{Treatment/ID
|accepted_name=Psilostrophe cooperi
|accepted_authority=(A. Gray) Greene
|publications={{Treatment/Publication
|title=Pittonia
|place=2: 176. 1891
|year=1891
}}
|basionyms={{Treatment/ID/Basionym
|name=Riddellia cooperi
|authority=A. Gray
|rank=species
|publication_title=Proc. Amer. Acad. Arts
|publication_place=7: 358. 1868
}}
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Gaillardiinae;Psilostrophe;Psilostrophe cooperi
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Gaillardiinae]]</div><div class="higher-taxon"><small>genus</small>[[Psilostrophe]]</div><div class="higher-taxon"><small>species</small>[[Psilostrophe cooperi]]</div></div>
|volume=Volume 21
|mention_page=page 453
|treatment_page=page 454
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism atypical some measurement;whole_organism atypical some measurement;whole_organism some measurement;whole_organism growth form;whole_organism atypical some measurement;whole_organism atypical some measurement;whole_organism some measurement;whole_organism growth form"><b>Shrubs </b>or subshrubs, (15–) 25–30 (–50+) cm.</span> <span class="statement" id="st-d0_s1" data-properties="stem pubescence"><b>Stems </b>pannose (white).</span> <span class="statement" id="st-d0_s2" data-properties="head arrangement"><b>Heads </b>borne singly.</span> <span class="statement" id="st-d0_s3" data-properties="peduncle atypical some measurement;peduncle some measurement"><b>Peduncles </b>35–60 (–80+) mm.</span> <span class="statement" id="st-d0_s4" data-properties="involucre some measurement"><b>Involucres </b>6–8 mm.</span> <span class="statement" id="st-d0_s5" data-properties="ray quantity"><b>Rays </b>3–6;</span> <span class="statement" id="st-d0_s6" data-properties="lamina atypical some measurement;lamina some measurement;lamina orientation">laminae (8–) 12–20 mm, spreading to reflexed in fruit.</span> <span class="statement" id="st-d0_s7" data-properties="disc-floret atypical quantity;disc-floret atypical quantity;disc-floret quantity"><b>Disc-</b>florets (6–) 10–17 (–25).</span> <span class="statement" id="st-d0_s8" data-properties="cypsela pubescence"><b>Cypselae </b>usually glabrous, sometimes glanddotted;</span> <span class="statement" id="st-d0_s9" data-properties="pappus quantity;pappus shape;scale some measurement;2n chromosome quantity">pappi of 4–6 oblong to ± lanceolate scales 2–2.5 mm. <b>2n</b> = 32.</span><!--

-->{{Treatment/Body
|phenology=Flowering (Feb–)Apr–Jun(–Dec).
|habitat=Creosote-bush scrub, sandy washes
|elevation=100–2100 m
|distribution=Ariz.;Calif.;Nev.;Utah;Mexico (Baja California);Mexico (Sonora)
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Psilostrophe cooperi
|authority=(A. Gray) Greene
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Riddellia cooperi
|family=Asteraceae
|phenology=Flowering (Feb–)Apr–Jun(–Dec).
|habitat=Creosote-bush scrub, sandy washes
|elevation=100–2100 m
|distribution=Ariz.;Calif.;Nev.;Utah;Mexico (Baja California);Mexico (Sonora)
|reference=None
|publication title=Pittonia
|publication year=1891
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21_1139.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae
|genus=Psilostrophe
|species=Psilostrophe cooperi
|2n chromosome quantity=32
|cypsela pubescence=glabrous
|disc-floret atypical quantity=17;25
|disc-floret quantity=10;17
|head arrangement=singly
|involucre some measurement=6mm;8mm
|lamina atypical some measurement=8mm;12mm
|lamina orientation=spreading;reflexed
|lamina some measurement=12mm;20mm
|pappus quantity=4;6
|pappus shape=oblong;more or less lanceolate
|peduncle atypical some measurement=60mm;80mm
|peduncle some measurement=35mm;60mm
|ray quantity=3;6
|scale some measurement=2mm;2.5mm
|stem pubescence=pannose
|whole_organism atypical some measurement=30cm;50cm
|whole_organism growth form=subshrub;shrub
|whole_organism some measurement=25cm;30cm
}}<!--

-->[[Category:Treatment]][[Category:Psilostrophe]]