Neottia auriculata (Wiegand) Szlach.

Auricled Twayblade

Facts About

Accepted Synonym: Listera auriculata

Neottia auriculata, commonly called Auricled Twayblade, has a limited distribution across the northeastern and northcentral United States and Canada, from Minnesota to Newfoundland. It produces two ovate leaves which are attached on opposite sides of the stem, slightly below the inflorescence. When it flowers in mid to late summer, it produces up to 20 pale green or blueish green flowers. The labellum is elongated and flat, ending in two pronounced, forked lobes. It can be found in moist coniferous or mixed forests, swamps, sphagnum bogs, and along riverbanks.

Neottia auriculata is considered globally vulnerable, and is rare in several New England and western states. Occasionally, it hybridizes with Neottia convallarioides, producing intermediate plants which can be taller than either parent.

Pollination

Pollinator information for this orchid has not been reported.

Ecosystem Type

Bogs, fens, forests, swamps, woodlands

Characteristics

Habitat:
terrestrial
Leaf arrangement:
opposite
Number of leaves on stem:
two
Form of the labellum:
the labellum is not pouch-like
Labellum outline:
the labellum is lobed
Main color of labellum:
green to brown
Nectar spur:
absent
Inflorescence type:
the inflorescence is a raceme
Labellum characteristics:
the labellum is lobed
Labellum length:
6–11 mm
Sepal length:
3–4 mm
Plant height:
5–25 cm
Show All Characteristics

Native to North America

Yes

North American Conservation Status & Distribution

Conservation Status

Select a location to view conservation status:

Conservation and Wetland Status
Global Rank Vulnerable
US Status N/A
Canadian Status Sensitive

North America Distribution

Adapted from USDA data