View source for Cerastium arvense subsp. strictum

{{Treatment/ID
|accepted_name=Cerastium arvense subsp. strictum
|accepted_authority=Gaudin
|publications={{Treatment/Publication
|title=Fl. Helv.
|place=3: 245. 1828
|year=1828
}}
|common_names=Céraiste dressé
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Cerastium alsophilum
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium angustatum
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium arvense var. angustifolium
|authority=Fenzl
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cerastium arvense var. fuegianum
|authority=Hooker f.
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cerastium arvense var. latifolium
|authority=Fenzl
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cerastium arvense var. ophiticola
|authority=Raymond
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cerastium arvense var. purpurascens
|authority=B. Boivin
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cerastium arvense var. sonnei
|authority=(Greene) Smiley
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cerastium arvense var. strictum
|authority=(Gaudin) W. D. J. Koch
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cerastium arvense var. viscidulum
|authority=Gremli
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cerastium campestre
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium confertum
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium effusum
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium elongatum
|authority=Hooker
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium fuegianum
|authority=Goldie
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium graminifolium
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium leibergii
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium nitidum
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium occidentale
|authority=Pursh
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium oreophilum
|authority=Rydberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium patulum
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium pensylvanicum
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium pubescens
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium scopulorum
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium sonnei
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium subulatum
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium tenuifolium
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium thermale
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Cerastium vestitum
|authority=
|rank=species
}}
|hierarchy=Caryophyllaceae;Caryophyllaceae subfam. Alsinoideae;Cerastium;Cerastium arvense;Cerastium arvense subsp. strictum
|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 arvense]]</div><div class="higher-taxon"><small>subspecies</small>[[Cerastium arvense subsp. strictum]]</div></div>
|volume=Volume 5
|mention_page=page 79, 81, 84, 89, 92
|treatment_page=page 80
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>forming clumps or mats, rhizomatous, or tufted, taprooted; straggling, creeping shoots usually not well developed. <b>Stems</b>: flowering stems decumbent at base, usually green or straw colored, occasionally purple tinged (in some populations growing on serpentine rocks), 5–20(–30) cm, pubescent and often glandular distally, hairs patent or deflexed; nonflowering winter shoots, when present, elongating, with narrow, oblanceolate leaves; small axillary tufts of leaves always present. <b>Leaves</b> usually not strongly dimorphic; blade lanceolate or oblanceolate to linear, 2–25 × 1–5 mm. <b>Flowers</b>: sepals 3.5–6(–7) mm, midrib visible; petals 7.5–9 mm (–12 mm in western plants), usually remaining ± white when dried; anthers 0.8–0.9 mm. <b>Capsules</b> 7.5–11 × 2.5–4 mm, usually less than 1.5 times as long as sepals, rarely longer. <b>Seeds</b> 0.6–1.1 mm. <b>2n</b> = 36.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=Prairie grasslands, roadsides, arctic and alpine tundra, shores, dunes and rocky plains, rocky outcrops, alvars, sea cliffs and banks, favoring neutral to alkaline soils
|elevation=0-3800 m
|distribution=Greenland;St. Pierre and Miquelon;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Conn.;Idaho;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;S.Dak.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Europe (Alps);South America (s to Tierra del Fuego).
|discussion=<p>Subspecies strictum is widely distributed and grows in a great diversity of habitats, making it difficult to circumscribe and distinguish, both from <i></i>subsp.<i> arvense</i> and from forms of <i>Cerastium beeringianum</i>, <i>C. velutinum</i>, and <i>C. viride</i>. Forms of <i></i>subsp.<i> strictum</i> growing at high elevations or latitudes often develop broader leaves and may be confused with <i>C. beeringianum</i> (S. J. Wagstaff and R. J. Taylor 1988). However, <i>C. arvense</i> always has small axillary tufts of leaves. In northern parts of the Ungava region of Labrador, <i></i>subsp.<i> strictum</i> appears on occasion to intergrade with <i>C. alpinum</i>. The status of these plants is uncertain.</p><!--
--><p>Subspecies strictum is a remarkably variable taxon. Plants from the western side of the continent often have larger petals and a ranker growth. Completely glabrous plants (var. ophiticola) occur on serpentine in southern Quebec. Plants with broader ovate-elliptic leaves and tomentose pubescence (similar to <i>Cerastium velutinum</i> <i></i>var.<i> villosissimum</i> but smaller) occur in the same area. Populations on the limestone plains near Belleville, southern Ontario, are more robust, with broader, strongly marcescent leaves at the base and a woolly pubescence. Plants from river valleys in Idaho tend to be much larger, with long, very narrow leaves; these are the basis for the name C. graminifolium. However, all of these plants are completely interfertile and show no reduction in fertility when crossed. Most of this variation is under genic control but also is affected by environmental factors.</p><!--
--><p>Subspecies strictum is not interfertile with <i></i>subsp.<i> arvense</i> or with other similar taxa such as <i>Cerastium beeringianum</i>, <i>C. velutinum</i>, and <i>C. viride</i>. Differences in chromosome numbers present an effective barrier to interfertility. However, several sterile hybrids involving <i></i>subsp.<i> strictum</i> and those species have been synthesized. Many workers, most recently R. E. Ugborogho (1977), have included <i>C. velutinum</i> and <i>C. viride</i> in <i>C. arvense</i> as varieties or subspecies. However specific status is more appropriate because of the strong sterility barriers between them and the presence of morphological characters that enable them to be distinguished, albeit with difficulty in some herbarium material. This difficulty arises from the remarkable degree of variation displayed by <i></i>subsp.<i> strictum</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cerastium arvense subsp. strictum
|authority=Gaudin
|rank=subspecies
|parent rank=species
|synonyms=Cerastium alsophilum;Cerastium angustatum;Cerastium arvense var. angustifolium;Cerastium arvense var. fuegianum;Cerastium arvense var. latifolium;Cerastium arvense var. ophiticola;Cerastium arvense var. purpurascens;Cerastium arvense var. sonnei;Cerastium arvense var. strictum;Cerastium arvense var. viscidulum;Cerastium campestre;Cerastium confertum;Cerastium effusum;Cerastium elongatum;Cerastium fuegianum;Cerastium graminifolium;Cerastium leibergii;Cerastium nitidum;Cerastium occidentale;Cerastium oreophilum;Cerastium patulum;Cerastium pensylvanicum;Cerastium pubescens;Cerastium scopulorum;Cerastium sonnei;Cerastium subulatum;Cerastium tenuifolium;Cerastium thermale;Cerastium vestitum
|basionyms=
|family=Caryophyllaceae
|phenology=Flowering spring.
|habitat=Prairie grasslands, roadsides, arctic and alpine tundra, shores, dunes and rocky plains, rocky outcrops, alvars, sea cliffs and banks, favoring neutral to alkaline soils
|elevation=0-3800 m
|distribution=Greenland;St. Pierre and Miquelon;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Conn.;Idaho;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;S.Dak.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Europe (Alps);South America (s to Tierra del Fuego).
|reference=None
|publication title=Fl. Helv.
|publication year=1828
|special status=Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V5/V5_164.xml
|subfamily=Caryophyllaceae subfam. Alsinoideae
|genus=Cerastium
|species=Cerastium arvense
|subspecies=Cerastium arvense subsp. strictum
}}<!--

-->[[Category:Treatment]][[Category:Cerastium arvense]]