View source for Cypripedium arietinum

{{Treatment/ID
|accepted_name=Cypripedium arietinum
|accepted_authority=R. Brown
|publications={{Treatment/Publication
|title=in W. Aiton and W. T. Aiton, Hortus Kew.
|place=5: 222. 1813
|year=1813
}}
|common_names=Ram’s-head
|basionyms=
|synonyms=
|hierarchy=Orchidaceae;Orchidaceae subfam. Cypripedioideae;Cypripedium;Cypripedium arietinum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Orchidaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Orchidaceae subfam. Cypripedioideae]]</div><div class="higher-taxon"><small>genus</small>[[Cypripedium]]</div><div class="higher-taxon"><small>species</small>[[Cypripedium arietinum]]</div></div>
|volume=Volume 26
|mention_page=page 499
|treatment_page=page 501
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>erect, 10–35 cm. <b>Leaves</b> 3–4, along middle portion of stem, spiraled to alternate, ascending to spreading; blade narrowly elliptic to ovate-lanceolate or oblong, 5–11 × 1.3–3.5 cm. <b>Flowers</b> usually solitary (rarely 2 in forma biflorum P. M. <b>Brown</b>); sepals green with reddish brown markings; dorsal sepal broadly elliptic to ovate-lanceolate, 15–25 × 5–10 mm; lateral sepals distinct, 12–20 × 1.5–4 mm; petals somewhat spreading, same color as sepals, somewhat spirally twisted, linear- to linear-lanceolate, 11–24 × 1–2 mm; lip white with green apex, usually with extensive reddish reticulations often merging toward apex, adaxially swollen near middle, 10–16 mm, apex abruptly deflected downward, orifice basal, 7–12 mm; staminode suborbicular. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Jun.
|habitat=Dry to moist open coniferous and mixed forests, coniferous-forested fens, beach thickets
|elevation=mostly 0–400 m
|distribution=Man.;N.S.;Ont.;Que.;Sask.;Conn.;Maine;Mass.;Mich.;Minn.;N.H.;N.Y.;Vt.;Wis.
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Cypripedium arietinum
|authority=R. Brown
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Orchidaceae
|phenology=Flowering May–Jun.
|habitat=Dry to moist open coniferous and mixed forests, coniferous-forested fens, beach thickets
|elevation=mostly 0–400 m
|distribution=Man.;N.S.;Ont.;Que.;Sask.;Conn.;Maine;Mass.;Mich.;Minn.;N.H.;N.Y.;Vt.;Wis.
|reference=None
|publication title=in W. Aiton and W. T. Aiton, Hortus Kew.
|publication year=1813
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V26/V26_1019.xml
|subfamily=Orchidaceae subfam. Cypripedioideae
|genus=Cypripedium
|species=Cypripedium arietinum
}}<!--

-->[[Category:Treatment]][[Category:Cypripedium]]