View source for Orobanche corymbosa

{{Treatment/ID
|accepted_name=Orobanche corymbosa
|accepted_authority=(Rydberg) Ferris
|publications={{Treatment/Publication
|title=Contr. Dudley Herb.
|place=5: 99. 1958
|year=1958
}}
|common_names=Flat-top broomrape
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Myzorrhiza corymbosa
|authority=Rydberg
|rank=species
|publication_title=Bull. Torrey Bot. Club
|publication_place=36: 696. 1909
}}
|synonyms={{Treatment/ID/Synonym
|name=Aphyllon corymbosum
|authority=(Rydberg) A. C. Schneider
|rank=species
}} {{Treatment/ID/Synonym
|name=Orobanche californica var. corymbosa
|authority=(Rydberg) Munz
|rank=variety
}}
|hierarchy=Orobanchaceae;Orobanche;Orobanche corymbosa
|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 corymbosa]]</div></div>
|volume=Volume 17
|mention_page=page 466, 470, 477, 481
|treatment_page=page 476
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism architecture;whole_organism architecture;whole_organism atypical some measurement;whole_organism some measurement;whole_organism size;whole_organism growth form;base size"><b>Plants </b>simple, rarely branched, 5–12 (–18) cm, usually slender, base sometimes enlarged.</span> <span class="statement" id="st-d0_s1" data-properties="root prominence;root size;root architecture;root architecture;bifurcation height or length or size"><b>Roots </b>usually inconspicuous (sometimes forming an irregular mass), slender, unbranched or with short bifurcations.</span> <span class="statement" id="st-d0_s2" data-properties="leaf quantity;leaf fixation or orientation"><b>Leaves </b>few to several, appressed;</span> <span class="statement" id="st-d0_s3" data-properties="blade shape;blade shape;blade some measurement;margin architecture;margin architecture;apex shape;apex shape;surface pubescence">blade broadly lanceolate or ovate, 5–10 mm, margins entire or slightly erose, apex acute or obtuse, surfaces often glandular-pubescent.</span> <span class="statement" id="st-d0_s4" data-properties="inflorescence shape;inflorescence coloration;inflorescence coloration;inflorescence coloration;inflorescence coloration;inflorescence coloration;inflorescence coloration;inflorescence architecture;inflorescence pubescence;raceme height or length or size"><b>Inflorescences </b>racemelike to elongate corymbs or short racemes (sometimes corymbose), rose, pink, purple, or white, simple, densely glandular-pubescent;</span> <span class="statement" id="st-d0_s5" data-properties="flower quantity">flowers numerous (rarely 10 or fewer in depauperate plants);</span> <span class="statement" id="st-d0_s6" data-properties="bract orientation;bract shape;bract arrangement or course or shape;bract some measurement;apex shape;apex pubescence">bracts slightly reflexed, narrowly lanceolate or almost linear, 7–11 mm, apex acute, glandular-pubescent.</span> <span class="statement" id="st-d0_s7" data-properties="pedicel some measurement;pedicel some measurement;pedicel height or length or size"><b>Pedicels </b>3–20 mm proximally, 0 mm distally, shorter than plant axis;</span> <span class="statement" id="st-d0_s8" data-properties="bracteole quantity">bracteoles 2.</span> <span class="statement" id="st-d0_s9" data-properties="calyx coloration;calyx coloration;calyx coloration;calyx coloration;calyx coloration;calyx coloration;calyx coloration;calyx architecture or shape;calyx some measurement;calyx shape;lobe quantity;lobe size;lobe shape;lobe pubescence"><b>Flowers:</b> calyx lavender, pink, white, or yellow, sometimes burgundy, ± radially symmetric, 12–24 mm, deeply divided into 5 subequal (reflexed or contorted) lobes, lobes linear-subulate, densely glandular-pubescent;</span> <span class="statement" id="st-d0_s10" data-properties="corolla atypical some measurement;corolla some measurement;tube coloration;tube coloration;tube coloration;tube coloration;tube size;tube shape;tube pubescence;tube pubescence;vein coloration">corolla (15–) 18–34 mm, tube white to grayish white, pale-pink to pink, or pale-purple to purple, rarely brick-red, sometimes with darker-pink to purple veins, slightly constricted above ovary, bent forward, glandular-pubescent or glabrate;</span> <span class="statement" id="st-d0_s11" data-properties="fold prominence;fold coloration;fold pubescence">palatal folds prominent, yellow, glabrous (with blisterlike swellings);</span> <span class="statement" id="st-d0_s12" data-properties="lip coloration;lip coloration;lip coloration;lip coloration;lip some measurement;vein coloration;abaxial lip coloration;abaxial lip orientation;lobe shape;apex shape;apex shape;adaxial lip orientation;adaxial lip orientation;adaxial lip some measurement;lobe shape;apex shape;apex architecture or shape;apex architecture or shape;apex shape">lips white to ± pink, pale-purple to purple, brick-red, or pinkish red, sometimes with darker-pink to purple veins or internally darker, abaxial lip spreading, 5–9 mm, lobes oblong to oblong-lanceolate, apex acute or rounded, adaxial lip erect or reflexed, 5–9 mm, lobes oblong, apex rounded, truncate, or emarginate, rarely acute;</span> <span class="statement" id="st-d0_s13" data-properties="filament pubescence;anther position;anther pubescence;anther pubescence">filaments glabrous, anthers included, tomentose, sometimes glabrous (subsp. mutabilis).</span> <span class="statement" id="st-d0_s14" data-properties="capsule shape;capsule some measurement"><b>Capsules </b>ovoid to oblong-ovoid, 5–13 mm.</span> <span class="statement" id="st-d0_s15" data-properties="seed some measurement"><b>Seeds </b>0.3–0.5 mm.</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;Man.;Ariz.;Calif.;Idaho;Mont.;N.Mex.;Nev.;Oreg.;Utah;Wash.;Wyo.
|discussion=<p>Subspecies 2 (2 in the flora).</p><!--
--><p>The range of Orobanche corymbosa includes the Great Basin Desert, Intermountain Region, Columbia Plateau, and contiguous areas. The two subspecies are sympatric through most of the geographic range of the species. Areas of sympatry exist with several other species of Orobanche: in the west with O. californica; in the north and east with O. ludoviciana; and in the south with O. arizonica and O. multiflora. Subspecies mutabilis tends to produce more racemose inflorescences, while subsp. corymbosa typically produces more compact corymbose inflorescences. This suggests a genetic affinity between O. corymbosa and members of the O. californica and O. ludoviciana groups. The southern members of subsp. corymbosa in California and Nevada appear to intergrade with O. californica across the Sierra Nevada. However, there are exceptional individuals in every population, so seasonal weather may cause variations in plant morphology.</p><!--
--><p>Inflorescence differences could also be associated with the ploidy differences reported in Orobanche corymbosa (L. R. Heckard and T. I. Chuang 1975). Ploidy and morphological instability may indicate significant introgression or a hybrid origin of O. corymbosa.</p><!--
--><p>Both subspecies share a somewhat ampliate corolla tube, which is a good field character for this species when compared with species with which it has an overlapping range. Orobanche corymbosa is parasitic on species of Artemisia (Asteraceae), principally A. tridentata, but has occasionally been reported on Iva (Asteraceae) and Atriplex and Sarcobatus (Chenopodiaceae).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Inflorescences simple corymbs or short corymbose racemes; calyces (13–)15–24 mm, equal to or shorter than corollas; corollas glandular-pubescent; anthers tomentose.
|[[Orobanche corymbosa subsp. corymbosa|Orobanche corymbosa subsp. corymbosa]]
|-id=key-0-1
|1
|Inflorescences short racemes or racemelike to elongate corymbs; calyces 12–18 mm, sometimes equal to or longer than corollas; corollas glabrate or slightly glandular-pubescent; anthers tomentose or glabrous.
|[[Orobanche corymbosa subsp. mutabilis|Orobanche corymbosa subsp. mutabilis]]
|}
</div></div><!--

-->{{#Taxon:
name=Orobanche corymbosa
|authority=(Rydberg) Ferris
|rank=species
|parent rank=genus
|synonyms=Aphyllon corymbosum;Orobanche californica var. corymbosa
|basionyms=Myzorrhiza corymbosa
|family=Orobanchaceae
|distribution=Alta.;B.C.;Man.;Ariz.;Calif.;Idaho;Mont.;N.Mex.;Nev.;Oreg.;Utah;Wash.;Wyo.
|reference=None
|publication title=Contr. Dudley Herb.
|publication year=1958
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V17/V17_808.xml
|genus=Orobanche
|species=Orobanche corymbosa
|abaxial lip coloration=darker
|abaxial lip orientation=spreading
|adaxial lip orientation=reflexed;erect
|adaxial lip some measurement=5mm;9mm
|anther position=included
|anther pubescence=glabrous;tomentose
|apex architecture or shape=emarginate;truncate
|apex pubescence=glandular-pubescent
|apex shape=acute;rounded;rounded;acute;acute;obtuse;acute
|base size=enlarged
|bifurcation height or length or size=short
|blade shape=ovate;lanceolate
|blade some measurement=5mm;10mm
|bract arrangement or course or shape=linear
|bract orientation=reflexed
|bract shape=lanceolate
|bract some measurement=7mm;11mm
|bracteole quantity=2
|calyx architecture or shape=symmetric
|calyx coloration=burgundy;yellow;white;yellow;white;pink;lavender
|calyx shape=divided
|calyx some measurement=12mm;24mm
|capsule shape=ovoid;oblong-ovoid
|capsule some measurement=5mm;13mm
|corolla atypical some measurement=15mm;18mm
|corolla some measurement=18mm;34mm
|filament pubescence=glabrous
|flower quantity=numerous
|fold coloration=yellow
|fold prominence=prominent
|fold pubescence=glabrous
|inflorescence architecture=simple
|inflorescence coloration=white;purple;white;purple;pink;rose
|inflorescence pubescence=glandular-pubescent
|inflorescence shape=racemelike;elongate
|leaf fixation or orientation=appressed
|leaf quantity=few;several
|lip coloration=white;more or less pink pale-purple
|lip some measurement=5mm;9mm
|lobe pubescence=glandular-pubescent
|lobe quantity=5
|lobe shape=oblong;oblong;oblong-lanceolate
|lobe size=subequal
|margin architecture=erose;entire
|pedicel height or length or size=shorter
|pedicel some measurement=0;3mm;20mm
|raceme height or length or size=short
|root architecture=with short bifurcations;unbranched
|root prominence=inconspicuous
|root size=slender
|seed some measurement=0.3mm;0.5mm
|surface pubescence=glandular-pubescent
|tube coloration=brick-red;white;grayish white pale-pink
|tube pubescence=glabrate;glandular-pubescent
|tube shape=bent
|tube size=constricted
|vein coloration=darker-pink;purple
|whole_organism architecture=branched;simple
|whole_organism atypical some measurement=12cm;18cm
|whole_organism growth form=plant
|whole_organism size=slender
|whole_organism some measurement=5cm;12cm
}}<!--

-->[[Category:Treatment]][[Category:Orobanche]]