View source for Eriogonum corymbosum

{{Treatment/ID
|accepted_name=Eriogonum corymbosum
|accepted_authority=Bentham in A. P. de Candolle and A. L. P. P. de Candolle
|publications={{Treatment/Publication
|title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|place=14: 17. 1856
|year=1856
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Eriogonum effusum subsp. corymbosum
|authority=(Bentham) S. Stokes
|rank=subspecies
}}
|hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Eucycla;Eriogonum corymbosum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Eriogonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Eriogonum]]</div><div class="higher-taxon"><small>subgenus</small>[[Eriogonum subg. Eucycla]]</div><div class="higher-taxon"><small>species</small>[[Eriogonum corymbosum]]</div></div>
|volume=Volume 5
|mention_page=page 231, 232, 239, 242, 256, 257, 259, 260, 263
|treatment_page=page 255
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism orientation;whole_organism shape;whole_organism orientation;whole_organism growth form;whole_organism architecture;whole_organism atypical length;whole_organism atypical length;whole_organism length;whole_organism atypical width;whole_organism atypical width;whole_organism width;whole_organism coloration;whole_organism pubescence;whole_organism coloration;whole_organism coloration;whole_organism growth form;whole_organism orientation;whole_organism shape;whole_organism orientation;whole_organism growth form;whole_organism architecture;whole_organism atypical length;whole_organism atypical length;whole_organism length;whole_organism atypical width;whole_organism atypical width;whole_organism width;whole_organism coloration;whole_organism pubescence;whole_organism coloration;whole_organism coloration;whole_organism growth form"><b>Shrubs </b>or subshrubs, spreading, rounded, occasionally erect, rarely somewhat matted, not scapose, (0.5–) 1.5–8 (–15) × (2–) 3–15 (–23) dm, grayish to reddish-brown-tomentose to floccose or glabrous, grayish or greenish.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem orientation;leaf-base duration;leaf-base quantity;whole_organism growth form"><b>Stems </b>spreading or erect, often with persistent leaf-bases, up to 3/4 or more height of plant;</span> <span class="statement" id="st-d0_s2" data-properties="caudex stem presence;caudex stem growth form">caudex stems absent or somewhat matted;</span> <span class="statement" id="st-d0_s3" data-properties="flowering-stem location;flowering-stem orientation;flowering-stem orientation;flowering-stem size;flowering-stem size;flowering-stem architecture;flowering-stem shape;flowering-stem atypical some measurement;flowering-stem some measurement;flowering-stem pubescence;flowering-stem pubescence">aerial flowering-stems erect or nearly so, slender or occasionally stout, solid, not fistulose, (0.1–) 1–2 dm, tomentose to floccose, occasionally glabrous.</span> <span class="statement" id="st-d0_s4" data-properties="leaf position;leaf quantity"><b>Leaves </b>cauline, 1 per node;</span> <span class="statement" id="st-d0_s5" data-properties="petiole some measurement;petiole pubescence">petiole 0.1–1.5 cm, tomentose to floccose;</span> <span class="statement" id="st-d0_s6" data-properties="blade shape;blade shape;blade atypical length;blade atypical length;blade length;blade atypical width;blade atypical width;blade width;blade coloration;blade coloration;blade pubescence;margin pubescence;margin coloration;margin pubescence;margin coloration;margin shape">blade lanceolate to oblanceolate or elliptic to nearly orbiculate, rarely cordate, (0.5–) 1–3 (–4.5) × (0.3–) 0.5–3 (–3.5) cm, densely white, tannish or brownish-tomentose on both surfaces or less so to nearly glabrous and green adaxially, margins occasionally crenulate.</span> <span class="statement" id="st-d0_s7" data-properties="inflorescence architecture;inflorescence architecture;inflorescence architecture;inflorescence density;inflorescence architecture;inflorescence atypical length;inflorescence length;inflorescence atypical width;inflorescence width"><b>Inflorescences </b>cymose, rarely capitate or umbellate, diffuse to rather open, (1–) 3–20 × 2–25 (–30) cm;</span> <span class="statement" id="st-d0_s8" data-properties="branch architecture;branch pubescence;branch pubescence;branch pubescence;branch pubescence;branch pubescence">branches dichotomous, tomentose, floccose, or rarely glabrous;</span> <span class="statement" id="st-d0_s9" data-properties="bract quantity;bract shape;bract shape;bract atypical some measurement;bract some measurement;bract architecture or shape;bract some measurement">bracts 3, scalelike, usually triangular, and 1–3 (–6) mm, or leaflike, 10–25 mm, and similar to leaf-blades.</span> <span class="statement" id="st-d0_s10" data-properties="peduncle presence"><b>Peduncles </b>absent.</span> <span class="statement" id="st-d0_s11" data-properties="involucre quantity;involucre shape;involucre atypical length;involucre length;involucre atypical width;involucre width"><b>Involucres </b>1 per node, turbinate, (1–) 1.5–3.5 × 1–2 (–2.5) mm;</span> <span class="statement" id="st-d0_s12" data-properties="tooth quantity;tooth orientation;tooth some measurement">teeth 5, erect, 0.3–1 mm.</span> <span class="statement" id="st-d0_s13" data-properties="flower atypical some measurement;flower some measurement"><b>Flowers </b>(1.5–) 2–3.5 mm;</span> <span class="statement" id="st-d0_s14" data-properties="perianth coloration;perianth coloration;perianth coloration;perianth pubescence;perianth pubescence">perianth white to cream, pink, or pale-yellow to yellow, glabrous or rarely sparsely pilose;</span> <span class="statement" id="st-d0_s15" data-properties="tepal fusion;tepal position;tepal quantity;tepal architecture;tepal shape">tepals connate proximal 1/4–1/3, essentially monomorphic, oblanceolate to spatulate;</span> <span class="statement" id="st-d0_s16" data-properties="stamen position;stamen atypical some measurement;stamen some measurement">stamens included to slightly exserted, 1–4 (–5) mm;</span> <span class="statement" id="st-d0_s17" data-properties="filament pubescence">filaments typically pilose proximally.</span> <span class="statement" id="st-d0_s18" data-properties="achene coloration;achene atypical some measurement;achene some measurement;achene pubescence;beak quantity;beak relief"><b>Achenes </b>brown, 2–2.5 (–3) mm, glabrous except for occasional papillate beak.</span><!--

-->{{Treatment/Body
|distribution=Ariz.;Colo.;N.Mex.;Nev.;Tex.;Utah;Wyo.
|discussion=<p>Varieties 8 (8 in the flora).</p><!--
--><p>Eriogonum corymbosum is a difficult complex of overlapping expressions, some of which are maintained here as taxonomically significant. Although perianth color is used to group the varieties, this feature is not consistent even in single populations. Therefore, population trends in perianth color must be noted in the field. Most of the varieties are then distinguished on the basis of leaf characters, and again, considerable variation can be seen in some populations. Still, the combination of flower color, leaf features, and geographic distribution should prove useful in distinguishing the varieties.</p><!--
--><p>S. L. Welsh et al. (2003) alluded to hybrid combinations involving Eriogonum corymbosum and other species. Aside from the instances involving E. brevicaule, discussed below, none has been confirmed. Most of the putative hybrids are misidentified specimens of E. lonchophyllum or collections of var. corymbosum in which the leaf-margins are not decidedly crisped, a feature usually seen only in fully mature plants.</p><!--
--><p>Eriogonum corymbosum was widely used by Native Americans. P. A. Vestal (1940) reported that the Hopi pressed boiled stalks into cakes that, when dried, were eaten with salt. J. W. Fewkes (1896) indicated that boiled leaves were mixed with cornmeal and water, and then baked into a kind of bread. S. A. Weber and P. D. Seaman (1985) indicated that A. F. Whiting was aware of a decoction of leaves (probably from var. glutinosum) being used for headaches. Variety glutinosum also was used primarily to treat tuberculosis, or at least as a cough medicine (D. E. Moerman 1986).</p><!--
--><p>Some of the expressions of Eriogonum corymbosum are attracting the interest of gardeners, a few are coming into cultivation, and several selections are now being developed. The plants are slow growing but can be transplanted with some degree of success. Members of the varieties are food plants for Ellis’s dotted-blue butterfly (Euphilotes ellisi).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Perianths usually pale yellow to yellow, occasionally white; s Utah, n Arizona, se Nevada
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Perianths white to cream or pink; sw Wyoming s through e Utah and w Colorado to nw New Mexico and Arizona
|[[#key-0-4| > 4]]
|-id=key-0-2
|2
|Inflorescence branches glabrous or nearly so; sw Utah
|[[Eriogonum corymbosum var. aureum|Eriogonum corymbosum var. aureum]]
|-id=key-0-2
|2
|Inflorescence branches tomentose to floccose
|[[#key-0-3| > 3]]
|-id=key-0-3
|3
|Leaf blades greenish-floccose adaxially; Colorado Plateau, n Arizona, s Utah
|[[Eriogonum corymbosum var. glutinosum|Eriogonum corymbosum var. glutinosum]]
|-id=key-0-3
|3
|Leaf blades silvery-floccose adaxially; Mojave Desert, se Nevada, sc Utah
|[[Eriogonum corymbosum var. nilesii|Eriogonum corymbosum var. nilesii]]
|-id=key-0-4
|4
|Leaf blades elliptic-oblong to nearly orbiculate, 1-3(-3.5) × 1-2.5(-3.5) cm
|[[#key-0-5| > 5]]
|-id=key-0-4
|4
|Leaf blades lanceolate to oblanceolate or elliptic, (0.5-)1-3(-4.5) × (0.3-)0.5-1.5 cm
|[[#key-0-6| > 6]]
|-id=key-0-5
|5
|Leaf blades elliptic-oblong to oblong or ovate, rarely cordate, densely white- to tan-lanate or less so to brownish-floccose adaxially; plants brownish-white- tomentose; flowers 2-2.5(-3) mm
|[[Eriogonum corymbosum var. velutinum|Eriogonum corymbosum var. velutinum]]
|-id=key-0-5
|5
|Leaf blades usually broadly ovate to nearly orbiculate, densely grayish-tomentose abaxially, sometimes tomentose to floccose on both surfaces, or more often subglabrous or glabrous and green adaxially; plants greenish-tomentose; flowers 2.5-3 mm
|[[Eriogonum corymbosum var. orbiculatum|Eriogonum corymbosum var. orbiculatum]]
|-id=key-0-6
|6
|Plants sprawling subshrubs, 0.5-1.5 dm, occasionally shrubs, 2-4.5 dm; leaf blades 0.5-2 × 0.3-0.6(-0.8) cm; subalpine in bristlecone pine communities
|[[Eriogonum corymbosum var. heilii|Eriogonum corymbosum var. heilii]]
|-id=key-0-6
|6
|Plants erect subshrubs or shrubs, 3-10 dm; leaf blades 1-3(-4.5) × (0.3-)0.5-1.5 cm; desert scrub to montane forest communities
|[[#key-0-7| > 7]]
|-id=key-0-7
|7
|Leaves cauline 2 or more length of flowering stems; n Arizona, w Colorado, e and s Utah, sw Wyoming
|[[Eriogonum corymbosum var. corymbosum|Eriogonum corymbosum var. corymbosum]]
|-id=key-0-7
|7
|Leaves cauline 4 or less length of flowering stems; c and e Utah
|[[Eriogonum corymbosum var. revealianum|Eriogonum corymbosum var. revealianum]]
|}
</div></div><!--

-->{{#Taxon:
name=Eriogonum corymbosum
|authority=Bentham in A. P. de Candolle and A. L. P. P. de Candolle
|rank=species
|parent rank=subgenus
|synonyms=Eriogonum effusum subsp. corymbosum
|basionyms=
|family=Polygonaceae
|distribution=Ariz.;Colo.;N.Mex.;Nev.;Tex.;Utah;Wyo.
|reference=None
|publication title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr.
|publication year=1856
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V5/V5_477.xml
|subfamily=Polygonaceae subfam. Eriogonoideae
|genus=Eriogonum
|subgenus=Eriogonum subg. Eucycla
|species=Eriogonum corymbosum
|achene atypical some measurement=2.5mm;3mm
|achene coloration=brown
|achene pubescence=glabrous
|achene some measurement=2mm;2.5mm
|beak quantity=occasional
|beak relief=papillate
|blade atypical length=3cm;4.5cm
|blade atypical width=3cm;3.5cm
|blade coloration=tannish;white
|blade length=1cm;3cm
|blade pubescence=brownish-tomentose
|blade shape=cordate;lanceolate;oblanceolate or elliptic
|blade width=0.5cm;3cm
|bract architecture or shape=leaflike
|bract atypical some measurement=3mm;6mm
|bract quantity=3
|bract shape=triangular;scale-like
|bract some measurement=10mm;25mm
|branch architecture=dichotomous
|branch pubescence=glabrous;floccose;glabrous;floccose;tomentose
|caudex stem growth form=matted
|caudex stem presence=absent
|filament pubescence=pilose
|flower atypical some measurement=1.5mm;2mm
|flower some measurement=2mm;3.5mm
|flowering-stem architecture=solid
|flowering-stem atypical some measurement=0.1dm;1dm
|flowering-stem location=aerial
|flowering-stem orientation=nearly;erect
|flowering-stem pubescence=glabrous;tomentose;floccose
|flowering-stem shape=not fistulose
|flowering-stem size=stout;slender
|flowering-stem some measurement=1dm;2dm
|inflorescence architecture=open;umbellate;capitate;cymose
|inflorescence atypical length=1cm;3cm
|inflorescence atypical width=25cm;30cm
|inflorescence density=diffuse
|inflorescence length=3cm;20cm
|inflorescence width=2cm;25cm
|involucre atypical length=1mm;1.5mm
|involucre atypical width=2mm;2.5mm
|involucre length=1.5mm;3.5mm
|involucre quantity=1
|involucre shape=turbinate
|involucre width=1mm;2mm
|leaf position=cauline
|leaf quantity=1
|leaf-base duration=persistent
|leaf-base quantity=0;3/4
|margin coloration=green;green
|margin pubescence=glabrous;glabrous
|margin shape=crenulate
|peduncle presence=absent
|perianth coloration=white;cream pink or pale-yellow
|perianth pubescence=pilose;glabrous
|petiole pubescence=tomentose;floccose
|petiole some measurement=0.1cm;1.5cm
|stamen atypical some measurement=4mm;5mm
|stamen position=included;slightly exserted
|stamen some measurement=1mm;4mm
|stem orientation=erect;spreading
|tepal architecture=monomorphic
|tepal fusion=connate
|tepal position=proximal
|tepal quantity=1/4;1/3
|tepal shape=oblanceolate;spatulate
|tooth orientation=erect
|tooth quantity=5
|tooth some measurement=0.3mm;1mm
|whole_organism architecture=not scapose;not scapose
|whole_organism atypical length=8dm;15dm
|whole_organism atypical width=15dm;23dm
|whole_organism coloration=greenish;grayish;grayish;greenish;grayish;grayish
|whole_organism growth form=plant;subshrub;matted;shrub;matted
|whole_organism length=1.5dm;8dm
|whole_organism orientation=erect;spreading;erect;spreading
|whole_organism pubescence=reddish-brown-tomentose;floccose or glabrous
|whole_organism shape=rounded;rounded
|whole_organism width=3dm;15dm
}}<!--

-->[[Category:Treatment]][[Category:Eriogonum subg. Eucycla]]