View source for Euphrasia tetraquetra

{{Treatment/ID
|accepted_name=Euphrasia tetraquetra
|accepted_authority=(Brébisson) Arrondeau
|publications={{Treatment/Publication
|title=Bull. Soc. Polymath. Morbihan
|place=1862: 96. 1863
|year=1863
}}
|common_names=Maritime eyebright
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}{{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms={{Treatment/ID/Basionym
|name=Euphrasia officinalis var. brébisson
|authority=
|rank=variety
|publication_title=Fl. Normandie ed.
|publication_place=2, 183. 1849
}}
|synonyms=
|hierarchy=Orobanchaceae;Euphrasia;Euphrasia tetraquetra
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Orobanchaceae]]</div><div class="higher-taxon"><small>genus</small>[[Euphrasia]]</div><div class="higher-taxon"><small>species</small>[[Euphrasia tetraquetra]]</div></div>
|volume=Volume 17
|mention_page=page 493
|treatment_page=page 497
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>branched, sometimes simple, to 12(–18) cm; branches 1–3(–5), from middle and distal, sometimes basal, nodes; cauline internode lengths 0.8–1.5 times subtending leaves. <b>Leaves</b>: blade +/- ovate, 2–8(–11) mm, margins serrate-dentate, teeth 2 or 3(–6) pairs, apices subacute to acute. <b>Inflorescences</b> densely spicate, sometimes 4-angled, beginning at node 3–5(–7); bracts light to dark green, broader than leaves, ovate to obovate, length not more than 2 times width, (4–)5–7(–9) mm, glossy, surfaces glabrous or hairy and hairs eglandular bristles on veins, teeth 4 or 5 pairs, as long as or longer than wide, apices acute, sometimes aristate, sinuses between teeth acute. <b>Flowers</b>: calyx lobes straight, apex acute; corolla white, adaxial lip sometimes tinged lilac, 4–5 mm, abaxial lip exceeding adaxial. <b>Capsules</b> oblong, 3–6 mm, apex truncate. <b>2n</b> = 44 (England).</span><!--

-->{{Treatment/Body
|phenology=Flowering summer.
|habitat=Grassy and gravelly places, coastal.
|elevation=0–200 m.
|distribution=N.S.;Ont.;Que.;Maine;n Europe.
|introduced=true
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Euphrasia tetraquetra
|authority=(Brébisson) Arrondeau
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Euphrasia officinalis var. brébisson
|family=Orobanchaceae
|phenology=Flowering summer.
|habitat=Grassy and gravelly places, coastal.
|elevation=0–200 m.
|distribution=N.S.;Ont.;Que.;Maine;n Europe.
|introduced=true
|reference=None
|publication title=Bull. Soc. Polymath. Morbihan
|publication year=1863
|special status=Weedy;Introduced
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V17/V17_851.xml
|genus=Euphrasia
|species=Euphrasia tetraquetra
}}<!--

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