View source for Cerastium maximum

{{Treatment/ID
|accepted_name=Cerastium maximum
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 439. 1753
|year=1753
}}
|common_names=Great mouse-ear chickweed
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Dichodon maximus
|authority=(Linnaeus) Á. Löve & D. Löve
|rank=species
}}
|hierarchy=Caryophyllaceae;Caryophyllaceae subfam. Alsinoideae;Cerastium;Cerastium maximum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Caryophyllaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Caryophyllaceae subfam. Alsinoideae]]</div><div class="higher-taxon"><small>genus</small>[[Cerastium]]</div><div class="higher-taxon"><small>species</small>[[Cerastium maximum]]</div></div>
|volume=Volume 5
|mention_page=page 74, 75
|treatment_page=page 87
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism architecture or growth form;whole_organism growth form"><b>Plants </b>perennial, subrhizomatous.</span> <span class="statement" id="st-d0_s1" data-properties="stem architecture;stem quantity;stem orientation;stem orientation;stem some measurement"><b>Stems </b>simple, or few together, erect or ascending, 20–70 cm, proximal internodes moderately pilose, becoming glandular distally;</span> <span class="statement" id="st-d0_s2" data-properties="proximal internode pubescence;proximal internode architecture or function or pubescence;proximal internode structure subtype;axillary branch presence">nonflowering, axillary branches usually present;</span> <span class="statement" id="st-d0_s3" data-properties="axillary tuft size;leaf presence">small axillary tufts of leaves absent.</span> <span class="statement" id="st-d0_s4" data-properties="leaf architecture;leaf condition"><b>Leaves </b>sessile, not marcescent;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade length;blade width;midrib prominence;apex shape;apex pubescence;apex architecture or pubescence or shape">blade narrowly lanceolate, with prominent midrib, 0.2–1 × 3–12 mm, apex acuminate, ± pubescent on both surfaces, short-ciliate.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence architecture;inflorescence architecture;cyme architecture"><b>Inflorescences </b>open or congested, usually 3–10-flowered cymes;</span> <span class="statement" id="st-d0_s7" data-properties="bract shape;bract shape;bract growth form or texture;bract pubescence">bracts normally lanceolate, acuminate, herbaceous, pubescent.</span> <span class="statement" id="st-d0_s8" data-properties="pedicel orientation;pedicel atypical some measurement;pedicel some measurement;pedicel length;pedicel pubescence"><b>Pedicels </b>erect, 2–25 (–60) mm, usually ca. 2 times as long as sepals in fruit, glandular-pubescent.</span> <span class="statement" id="st-d0_s9" data-properties="flower size;flower prominence;flower diameter"><b>Flowers </b>large, conspicuous, more than 2 cm diam.;</span> <span class="statement" id="st-d0_s10" data-properties="sepal shape;sepal atypical some measurement;sepal some measurement;sepal margin growth form or texture;sepal margin size or width;sepal margin texture;apex shape;apex pubescence">sepals lanceolate, 8–11 (–12) mm, outer sepal margins herbaceous, inner sepal margins narrow, membranous, apex acute, moderately to sparsely glandular-hairy;</span> <span class="statement" id="st-d0_s11" data-properties="petal shape;petal atypical some measurement;petal some measurement;petal length;apex shape">petals obovate, (15–) 18–25 mm, at least 2 times as long as sepals, apex deeply 2-fid;</span> <span class="statement" id="st-d0_s12" data-properties="stamen quantity">stamens 10;</span> <span class="statement" id="st-d0_s13" data-properties="style quantity">styles 5.</span> <span class="statement" id="st-d0_s14" data-properties="capsule shape;capsule course;capsule some measurement;capsule length"><b>Capsules </b>narrowly conic, straight, 15–22 mm, ca. 2 times as long as sepals;</span> <span class="statement" id="st-d0_s15" data-properties="tooth quantity;tooth orientation;tooth height or length or size;tooth architecture">teeth 10, erect, short, becoming outwardly coiled.</span> <span class="statement" id="st-d0_s16" data-properties="seed coloration;seed shape;seed diameter;seed relief"><b>Seeds </b>yellowish-brown, round, 2–2.5 mm diam., finely rugose in concentric rings;</span> <span class="statement" id="st-d0_s17" data-properties="">testa not inflated.</span> <span class="statement" id="st-d0_s18" data-properties="testa shape;2n chromosome quantity">2n = 38.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Open woods, gravel bars, terraces by rivers
|elevation=0-1200 m
|distribution=N.W.T.;Yukon;Alaska;Asia
|discussion=<p>This beautiful species is distinguished by its long, narrowly conic capsule with teeth that coil outward like a watch spring.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Cerastium maximum
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Dichodon maximus
|basionyms=
|family=Caryophyllaceae
|phenology=Flowering summer.
|habitat=Open woods, gravel bars, terraces by rivers
|elevation=0-1200 m
|distribution=N.W.T.;Yukon;Alaska;Asia
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V5/V5_180.xml
|subfamily=Caryophyllaceae subfam. Alsinoideae
|genus=Cerastium
|species=Cerastium maximum
|2n chromosome quantity=38
|apex architecture or pubescence or shape=short-ciliate
|apex pubescence=glandular-hairy;pubescent
|apex shape=2-fid;acute;acuminate
|axillary branch presence=absent
|axillary tuft size=small
|blade length=0.2mm;1mm
|blade shape=lanceolate
|blade width=3mm;12mm
|bract growth form or texture=herbaceous
|bract pubescence=pubescent
|bract shape=acuminate;lanceolate
|capsule course=straight
|capsule length=2 times as long as sepals
|capsule shape=conic
|capsule some measurement=15mm;22mm
|cyme architecture=3-10-flowered
|flower prominence=conspicuous
|flower size=large
|inflorescence architecture=congested;open
|leaf architecture=sessile
|leaf condition=not marcescent
|leaf presence=absent
|midrib prominence=prominent
|pedicel atypical some measurement=25mm;60mm
|pedicel length=2 times as long as sepals
|pedicel orientation=erect
|pedicel pubescence=glandular-pubescent
|pedicel some measurement=2mm;25mm
|petal atypical some measurement=15mm;18mm
|petal length=2 times as long as sepals
|petal shape=obovate
|petal some measurement=18mm;25mm
|proximal internode architecture or function or pubescence=glandular
|proximal internode pubescence=pilose
|proximal internode structure subtype=nonflowering
|seed coloration=yellowish-brown
|seed diameter=2mm;2.5mm
|seed relief=rugose
|seed shape=round
|sepal atypical some measurement=11mm;12mm
|sepal margin growth form or texture=herbaceous
|sepal margin size or width=narrow
|sepal margin texture=membranous
|sepal shape=lanceolate
|sepal some measurement=8mm;11mm
|stamen quantity=10
|stem architecture=simple
|stem orientation=ascending;erect
|stem quantity=few
|stem some measurement=20cm;70cm
|style quantity=5
|testa shape=not inflated
|tooth architecture=coiled
|tooth height or length or size=short
|tooth orientation=erect
|tooth quantity=10
|whole_organism architecture or growth form=subrhizomatous
|whole_organism duration=perennial
|whole_organism growth form=plant
}}<!--

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