View source for Orobanche cooperi

{{Treatment/ID
|accepted_name=Orobanche cooperi
|accepted_authority=(A. Gray) A. Heller
|publications={{Treatment/Publication
|title=Cat. N. Amer. Pl.,
|place=7. 1898
|year=1898
}}
|common_names=Cooper’s or desert broomrape
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Aphyllon cooperi
|authority=A. Gray
|rank=species
|publication_title=Proc. Amer. Acad. Arts
|publication_place=20: 307. 1885
}}
|synonyms={{Treatment/ID/Synonym
|name=Myzorrhiza cooperi
|authority=(A. Gray) Rydberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Orobanche ludoviciana var. cooperi
|authority=(A. Gray) Beck
|rank=variety
}}
|hierarchy=Orobanchaceae;Orobanche;Orobanche cooperi
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Orobanchaceae]]</div><div class="higher-taxon"><small>genus</small>[[Orobanche]]</div><div class="higher-taxon"><small>species</small>[[Orobanche cooperi]]</div></div>
|volume=Volume 17
|mention_page=page 469, 470, 479, 482, 487
|treatment_page=page 484
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>simple, branched, or multiple stems from host attachment, 5–45 cm, stout, sometimes slender, base usually enlarged. <b>Roots</b> usually relatively conspicuous (often forming an irregular mass), slender, branched. <b>Leaves</b> numerous, appressed; blade ± lanceolate to broadly ovate, 6–12 mm, margins entire, apex acute or obtuse, surfaces sometimes glandular-pubescent. <b>Inflorescences</b> spikelike racemes, purple, usually branched, densely glandular-pubescent, sometimes appearing canescent; flowers numerous; bracts erect to reflexed, lanceolate to linear, 5–12 mm, apex acuminate, obtuse, or acute, glandular-pubescent. <b>Pedicels</b> 0–30 mm, much shorter than plant axis; bracteoles 2. <b>Flowers</b>: calyx dark purple or lavender, weakly bilaterally symmetric, 8–12 mm, deeply divided into 5 lobes, lobes lanceolate-acute to -attenuate, densely glandular-pubescent; corolla 15–32 mm, tube purple or lavender, rarely white, tinged with purple, constricted above ovary, bent forward, ± glandular-pubescent; palatal folds prominent, yellow, densely pubescent; lips dark purple to lavender, with darker purple veins, abaxial lip spreading or slightly reflexed, 3–9 mm, lobes oblong-lanceolate to narrowly ovate, apex acute, often with apiculate tooth, adaxial lip erect, reflexed, or revolute, 6–10 mm, lobes ± triangular, rarely truncate, apex acute, often with apiculate teeth; filaments glabrous, anthers included, glabrous, sparsely villous, pubescent, or tomentulose along sutures, usually also with inconspicuous stalked glands (these minute, appearing peglike under magnification). <b>Capsules</b> ovoid, 6–12 mm. <b>Seeds</b> 0.2–0.5 mm.</span><!--

-->{{Treatment/Body
|distribution=Ariz.;Calif.;N.Mex.;Nev.;Tex.;n Mexico.
|discussion=<p>Subspecies 3 (3 in the flora).</p><!--
--><p>The hosts for <i>Orobanche cooperi</i> are shrubs of <i>Ambrosia</i> and <i>Viguiera</i> (<i>Asteraceae</i>).</p><!--
--><p>L. R. Heckard and T. I. Chuang (1975) mentioned an undescribed polyploid variant (2n = 96) with smaller, shorter-lobed corollas and peltate, bowl-shaped stigmas occurs on the same hosts in southern California.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Corollas 15–18(–22) mm, lips 3–6 mm, adaxial lips reflexed or revolute; anthers glabrous or tomentulose from pollen sacs, stalked glands often few on dorsal surfaces or absent; Chihuahuan Desert.
|[[Orobanche cooperi subsp. palmeri|Orobanche cooperi subsp. palmeri]]
|-id=key-0-1
|1
|Corollas (15–)18–32 mm, lips 5–10 mm, adaxial lips erect or reflexed; anthers glabrous, sparsely villous, or pubescent, stalked glands present on dorsal surfaces, sometimes obscure, rarely absent; Sonoran Desert and adjacent portions of California and Nevada.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Corollas (15–)18–22 mm, adaxial lips erect, lobes with or without apiculate teeth.
|[[Orobanche cooperi subsp. cooperi|Orobanche cooperi subsp. cooperi]]
|-id=key-0-2
|2
|Corollas 22–32 mm, adaxial lips erect or reflexed, lobes with apiculate teeth.
|[[Orobanche cooperi subsp. latiloba|Orobanche cooperi subsp. latiloba]]
|}
</div></div><!--

-->{{#Taxon:
name=Orobanche cooperi
|authority=(A. Gray) A. Heller
|rank=species
|parent rank=genus
|synonyms=Myzorrhiza cooperi;Orobanche ludoviciana var. cooperi
|basionyms=Aphyllon cooperi
|family=Orobanchaceae
|distribution=Ariz.;Calif.;N.Mex.;Nev.;Tex.;n Mexico.
|reference=None
|publication title=Cat. N. Amer. Pl.,
|publication year=1898
|special status=Weedy;Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V17/V17_823.xml
|genus=Orobanche
|species=Orobanche cooperi
}}<!--

-->

[[Category:Treatment]]
[[Category:Orobanche]]
[[Category:Revised Since Print]]