View source for Stellaria borealis

{{Treatment/ID
|accepted_name=Stellaria borealis
|accepted_authority=Bigelow
|publications={{Treatment/Publication
|title=Fl. Boston. ed.
|place=2, 182. 1824
|year=1824
}}
|common_names=Boreal starwort
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Alsine borealis
|authority=(Bigelow) Britton
|rank=species
}}
|hierarchy=Caryophyllaceae;Caryophyllaceae subfam. Alsinoideae;Stellaria;Stellaria borealis
|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>[[Stellaria]]</div><div class="higher-taxon"><small>species</small>[[Stellaria borealis]]</div></div>
|volume=Volume 5
|mention_page=page 99, 109
|treatment_page=page 100
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial, often matted, rhizomatous. <b>Stems</b> prostrate to ascending or erect, usually diffusely branched, sharply 4-angled, (5–)25–50 cm, glabrous to finely papillate, rarely pubescent. <b>Leaves</b> sessile; blade linear-lanceolate to ovate-lanceolate, rarely elliptic-lanceolate, 1–6 cm × 2–8 mm, base cuneate, margins eciliate or scabrid, sometimes ciliate towards base, apex acute. <b>Inflorescences</b> with flowers solitary, terminal and axillary, or terminal, often copious, very lax, leafy cymes; bracts foliaceous, lanceolate, reduced distally to ca. 2 mm, ± scarious. <b>Pedicels</b> erect or patent, usually reflexed at maturity, 10–40 mm, glabrous. <b>Flowers</b> 3–5 mm; sepals 5, 1–3-veined, lanceolate to ovate, 2–5 mm, margins scarious, apex acute, glabrous; petals 5, rarely absent, white or translucent, 1–3 mm, usually shorter than sepals; stamens 5; styles 3, erect to spreading, 0.9–2 mm. <b>Capsules</b> greenish brown or straw colored, ovoid, 3–7 mm, more than 1–1.5 times as long as broad, exceeding sepals, apex acute, opening by 3 valves; carpophore very short or absent. <b>Seeds</b> 10–20, brown, obovate, 0.7–0.9 mm on longest axis, smooth or slightly rugose. <b>2n</b> = 52.</span><!--

-->{{Treatment/Body
|distribution=Circumboreal.
|discussion=<p>Subspecies 2 (2 in the flora).</p><!--
--><p>Plants infected with an anther smut, Microbotyrum stellariae (Sowerby) G. Deml & Oberwinkler [Ustilago violacea (Persoon) Roussel, in the broad sense], exhibit flowers with enlarged, reddish anthers. This condition is known in both subspecies, especially in northern areas of the range, but is as yet unknown in <i>Stellaria calycantha</i>, a species previously united with <i>S. borealis</i> by some authors.</p>
|tables=
|references={{Treatment/Reference
|id=rabeler1993a
|text=Rabeler, R. K. 1993. The occurrence of anther smut, Ustilago violacea s.l., on Stellaria borealis (Caryophyllaceae) in North America. Contr. Univ. Michigan Herb. 19: 165–169.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Sepals ovate to ovate-triangular, with midvein extending to near apex, lateral veins visible only at base; capsules dark brown, opaque, less than 2 times as long as wide, usually 3-4.5(-5) mm; leaf blades elliptic-lanceolate to narrowly elliptic or linear-lanceolate, widest just below middle, usually 2-3 cm; circumboreal
|[[Stellaria borealis subsp. borealis|Stellaria borealis subsp. borealis]]
|-id=key-0-1
|1
|Sepals narrowly triangular, with 3 prominent, ridged veins extending to near apex; capsule straw colored, translucent, 2 times as long as wide, usually 5-7 mm; leaf blades narrowly lanceolate, widest near base, usually 3-6 cm; w North America
|[[Stellaria borealis subsp. sitchana|Stellaria borealis subsp. sitchana]]
|}
</div></div><!--

-->{{#Taxon:
name=Stellaria borealis
|authority=Bigelow
|rank=species
|parent rank=genus
|synonyms=Alsine borealis
|basionyms=
|family=Caryophyllaceae
|distribution=Circumboreal.
|reference=rabeler1993a
|publication title=Fl. Boston. ed.
|publication year=1824
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_206.xml
|subfamily=Caryophyllaceae subfam. Alsinoideae
|genus=Stellaria
|species=Stellaria borealis
}}<!--

-->[[Category:Treatment]][[Category:Stellaria]]