View source for Platanthera aquilonis

{{Treatment/ID
|accepted_name=Platanthera aquilonis
|accepted_authority=Sheviak
|publications={{Treatment/Publication
|title=Lindleyana
|place=14: 193, figs. 1–5. 1999
|year=1999
}}
|basionyms=
|synonyms=
|hierarchy=Orchidaceae;Orchidaceae subfam. Orchidoideae;Orchidaceae tribe Orchideae;Orchidaceae (tribe Orchideae) subtribe Orchidinae;Platanthera;Platanthera aquilonis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Orchidaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Orchidaceae subfam. Orchidoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Orchidaceae tribe Orchideae]]</div><div class="higher-taxon"><small>subtribe</small>[[Orchidaceae (tribe Orchideae) subtribe Orchidinae]]</div><div class="higher-taxon"><small>genus</small>[[Platanthera]]</div><div class="higher-taxon"><small>species</small>[[Platanthera aquilonis]]</div></div>
|volume=Volume 26
|mention_page=page 553, 558
|treatment_page=page 560
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>5–60 cm. <b>Leaves</b> few–several, ascending to arcuate-spreading, scattered along stem, gradually reduced to bracts distally; blade oblong to linear-lanceolate, 2.7–23 × 0.4–4 cm. <b>Spikes</b> lax to very dense. <b>Flowers</b> resupinate, not showy, yellowish green with dull yellowish lip, or more whitish green under cool conditions; lateral sepals spreading to reflexed; petals rhombic-ovate- to lance-falcate, margins entire; lip descending, projecting, or apex adhering to dorsal sepal and petal apices, rhombic-lanceolate to lanceolate, without basal thickening, 2.5–6 × 1–1.5 mm, base not rounded-dilated, margins entire; spur clavate or sometimes rather cylindric, 2–5 mm, apex usually broadly obtuse; rostellum lobes divergent, directed downward, very small, rounded, obscure; pollinaria straight; pollinia rotating forward and/or fragmenting, loose pollen masses free of anther sacs and trailing downward onto stigma; viscidia orbiculate; ovary rather slender to stout, mostly 5–13 mm. <b>2n</b> = 42.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Aug.
|habitat=Wet meadows, tundra, marshes, fens, stream banks, shores, ditches, seeping slopes, roadsides, borrow pits, mesic deciduous forest slopes
|elevation=0–2500 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Conn.;Idaho;Ill.;Ind.;Iowa;Maine;Mass.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Utah;Vt.;Wash.;Wis.;Wyo.
|discussion=<p>Flowers of <i>Platanthera aquilonis</i> are usually scentless, but in the far northwest they have a sweet, pungent scent, like that of some related species. The flowers are commonly self-pollinating: the pollinia rotate forward and downward, contacting the stigma, and/or the pollen masses dissociate and are deposited on the stigma as if they had sifted downward.</p><!--
--><p><i>Platanthera aquilonis</i> is a North American diploid species long confused with the tetraploid Icelandic <i>P. hyperborea</i> (Linnaeus) Lindley. Flowers of both species autopollinate, although the details of the mechanisms may differ. The two species differ in column structure and lip and viscidium shape. True <i>P. hyperborea</i> is similar to <i>P. huronensis</i>, and the relationship of these two species needs further study.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Platanthera aquilonis
|authority=Sheviak
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Orchidaceae
|phenology=Flowering May–Aug.
|habitat=Wet meadows, tundra, marshes, fens, stream banks, shores, ditches, seeping slopes, roadsides, borrow pits, mesic deciduous forest slopes
|elevation=0–2500 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Conn.;Idaho;Ill.;Ind.;Iowa;Maine;Mass.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Utah;Vt.;Wash.;Wis.;Wyo.
|reference=None
|publication title=Lindleyana
|publication year=1999
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V26/V26_1140.xml
|subfamily=Orchidaceae subfam. Orchidoideae
|tribe=Orchidaceae tribe Orchideae
|subtribe=Orchidaceae (tribe Orchideae) subtribe Orchidinae
|genus=Platanthera
|species=Platanthera aquilonis
}}<!--

-->[[Category:Treatment]][[Category:Platanthera]]