View source for Listera auriculata

{{Treatment/ID
|accepted_name=Listera auriculata
|accepted_authority=Wiegand
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=26: 166, plate 356, fig. 2. 1899
|year=1899
}}
|common_names=Auricled twayblade
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Bifolium auriculatum
|authority=(Wiegand) Nieuwland
|rank=species
}} {{Treatment/ID/Synonym
|name=Neottia auriculata
|authority=(Wiegand) Szlachetko
|rank=species
}} {{Treatment/ID/Synonym
|name=Ophrys auriculata
|authority=(Wiegand) House
|rank=species
}}
|hierarchy=Orchidaceae;Orchidaceae subfam. Epidendroideae;Orchidaceae tribe Neottieae;Orchidaceae (tribe Neottieae) subtribe Limodorinae;Listera;Listera auriculata
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Orchidaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Orchidaceae subfam. Epidendroideae]]</div><div class="higher-taxon"><small>tribe</small>[[Orchidaceae tribe Neottieae]]</div><div class="higher-taxon"><small>subtribe</small>[[Orchidaceae (tribe Neottieae) subtribe Limodorinae]]</div><div class="higher-taxon"><small>genus</small>[[Listera]]</div><div class="higher-taxon"><small>species</small>[[Listera auriculata]]</div></div>
|volume=Volume 26
|mention_page=page 587, 590, 591
|treatment_page=page 589
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>5–25 cm. <b>Stems</b> pale green, succulent, glabrous. <b>Leaves</b>: blade pale green, suborbiculate to suborbiculate-ovate or elliptic-ovate, 2.5–6 × 1.5–4.2 cm, apex subobtuse. <b>Inflorescences</b> 5–20-flowered, lax, 20–100 mm; floral bracts broadly elliptic to oblong-lanceolate, 2–7 × 1–2 mm, apex obtuse; peduncle and rachis densely glandular-puberulent; bracts, pedicel, and ovary glabrous to rarely glabrate. <b>Flowers</b> pale green to blue-green, fading whitish with age; pedicels stout, 2.5–5 mm, glabrous, rarely glabrate; sepals and petals reflexed away from column and lip; dorsal sepal elliptic-obovate, 3–3.5 × 1.5–2 mm, apex subobtuse; lateral sepals elliptic, oblong, or ovate-lanceolate, strongly falcate, 3–4 × 1–1.5 mm, apex subobtuse to acute; petals linear-oblong to linear, falcate, 3–3.7 × 0.8 mm, apex obtuse; lip obovate to oblong, base of lip with auricles curving around and clasping base of column, apex slightly expanded, cleft approximately 1/5–1/3 its length, forming 2 broadly rounded lobes, margins ciliate; disc 3-veined with lateral veins branched, base with ridge in center; column arcuate, 2.5–3.3 × 1 mm, dilated at distal end. <b>Capsules</b> horizontal to semi-erect, ellipsoid, 8 × 4 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering late Jun–Aug.
|habitat=Alluvial soils in low, moist, hardwood forests or mixed hardwood-coniferous forests, shrub swamps, sphagnum bogs, requires soil that remains cool throughout summer, with high degree of acidity
|elevation=0–1000 m
|distribution=Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Maine;Mich.;Minn.;N.H.;N.Y.;Vt.;Wis.
|discussion=<p>Leaves of <i>Listera auriculata</i> forma trifolia (Lepage) Lepage are three in a whorl.</p><!--
--><p><i>Listera auriculata</i> crosses with <i>L. convallarioides</i> to produce a natural hybrid L. ×veltmanii Case, originally discovered by H. S. Veltman and F. W. Case in 1962. The hybrid is almost exactly intermediate between its putative parents, and it is usually associated with one or the other parent (P. M. Catling 1976). Occasionally it appears to backcross with the parent species. Plants of the hybrid, although intermediate between the two putative parents, frequently differ from the parents in being much taller (to 2.5 dm). Also, the glandular pubescence of the pedicels and ovaries of the hybrid is shorter and sparser than that of the rachis; in <i>L. convallarioides</i> the glandular pubescence is as dense and long on pedicels as on the rachis, continuing on the ribs of the ovary. Pedicels and ovaries of <i>L. auriculata</i> are glabrous. The hybrids may be distinguished by using the following key.</p><!--
--><p><i>Listera</i> ×veltmanii flowers in July and August. Its habitat is intermediate between those typical of the parents and apparently is often disturbed; 500–800 m. It is known from New Brunswick, Newfoundland and Labrador, Quebec, Ontario, Michigan, and Wisconsin.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Lip not clawed, sessile or essentially so; auricles or lobes at base of lip curving around and clasping base of column.
|[[Listera auriculata|Listera auriculata]]
|-id=key-0-1
|1
|Lip clawed, not sessile; auricles or lobes absent or projecting laterally away from column.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Auricles or lobes at base of lip absent.
|[[Listera convallarioides|Listera convallarioides]]
|-id=key-0-2
|2
|Auricles or lobes present at base of lip, projecting laterally away from column.
|[[Listera ×veltmanii|Listera ×veltmanii]]
|}
</div></div><!--

-->{{#Taxon:
name=Listera auriculata
|authority=Wiegand
|rank=species
|parent rank=genus
|synonyms=Bifolium auriculatum;Neottia auriculata;Ophrys auriculata
|basionyms=
|family=Orchidaceae
|phenology=Flowering late Jun–Aug.
|habitat=Alluvial soils in low, moist, hardwood forests or mixed hardwood-coniferous forests, shrub swamps, sphagnum bogs, requires soil that remains cool throughout summer, with high degree of acidity
|elevation=0–1000 m
|distribution=Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Maine;Mich.;Minn.;N.H.;N.Y.;Vt.;Wis.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1899
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V26/V26_1202.xml
|subfamily=Orchidaceae subfam. Epidendroideae
|tribe=Orchidaceae tribe Neottieae
|subtribe=Orchidaceae (tribe Neottieae) subtribe Limodorinae
|genus=Listera
|species=Listera auriculata
}}<!--

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