View source for Platanthera dilatata

{{Treatment/ID
|accepted_name=Platanthera dilatata
|accepted_authority=(Pursh) Lindley ex L. C. Beck
|publications={{Treatment/Publication
|title=Bot. North. Middle States,
|place=347. 1833
|year=1833
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Orchis dilatata
|authority=Pursh
|rank=species
|publication_title=Fl. Amer. Sept.
|publication_place=2: 588. 1814
}}
|synonyms={{Treatment/ID/Synonym
|name=Habenaria dilatata
|authority=(Pursh) Hooker
|rank=species
}} {{Treatment/ID/Synonym
|name=Limnorchis dilatata
|authority=(Pursh) Rydberg
|rank=species
}}
|hierarchy=Orchidaceae;Orchidaceae subfam. Orchidoideae;Orchidaceae tribe Orchideae;Orchidaceae (tribe Orchideae) subtribe Orchidinae;Platanthera;Platanthera dilatata
|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 dilatata]]</div></div>
|volume=Volume 26
|mention_page=page 553, 557, 558, 559, 560, 561
|treatment_page=page 556
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>11–130 cm or more. <b>Leaves</b> few–several, ascending to recurved-spreading, scattered along stem, gradually reduced to bracts distally; blade linear, linear-lanceolate, oblong, or oblanceolate, 3.5–32 × 0.3–7 cm. <b>Spikes</b> very lax to very dense. <b>Flowers</b> resupinate, rather showy, conspicuous, white; lateral sepals spreading to reflexed; petals ovate- to linear-lance-falcate, margins entire; lip descending or apex adhering to dorsal sepal and petal apices, linear-lanceolate to lanceolate, without basal thickening, 4–11 × 2–5 mm, base slightly rounded-dilated to orbiculate, rarely rhombic, margins entire; rostellum lobes parallel to slightly divergent, directed downward, very small, obscure, rounded; pollinaria straight; pollinia remaining enclosed in anther sacs; ovary rather slender to stout, 5–15 mm. <b>2n</b> = 42.</span><!--

-->{{Treatment/Body
|distribution=North America.
|discussion=<p>Varieties 3 (3 in the flora).</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Spur shorter than lip, clavate to slightly capitate.
|[[Platanthera dilatata var. albiflora|Platanthera dilatata var. albiflora]]
|-id=key-0-1
|1
|Spur nearly equaling to exceeding lip, slender to slightly clavate.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Spur about equal to lip (mostly within 2 mm).
|[[Platanthera dilatata var. dilatata|Platanthera dilatata var. dilatata]]
|-id=key-0-2
|2
|Spur markedly exceeding lip (commonly 11/2 or more times length of lip).
|[[Platanthera dilatata var. leucostachys|Platanthera dilatata var. leucostachys]]
|}
</div></div><!--

-->{{#Taxon:
name=Platanthera dilatata
|authority=(Pursh) Lindley ex L. C. Beck
|rank=species
|parent rank=genus
|synonyms=Habenaria dilatata;Limnorchis dilatata
|basionyms=Orchis dilatata
|family=Orchidaceae
|distribution=North America.
|reference=None
|publication title=Bot. North. Middle States,
|publication year=1833
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V26/V26_1133.xml
|subfamily=Orchidaceae subfam. Orchidoideae
|tribe=Orchidaceae tribe Orchideae
|subtribe=Orchidaceae (tribe Orchideae) subtribe Orchidinae
|genus=Platanthera
|species=Platanthera dilatata
}}<!--

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