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Northwest Twayblade
Listera banksiana
  
About Northwest Twayblade (Listera banksiana) 0 Nurseries Carry This Plant Neottia banksiana is a species of orchid known by the common name northwestern twayblade. It was formerly placed in the genus Listera, but molecular phylogenetic studies have shown that Neottia nidus-avis, the bird's-nest orchid, evolved within the same group, and all species of Listera have been moved to Neottia. Older scientific names include Listera banksiana and Listera caurina. Neottia banksiana is native to northwestern North America from Alaska through the Pacific Northwest to the Grand Teton Range of Wyoming and to Mendocino County, California. It can be found in moist, dim habitat, such as mountain forest understory. It is a rhizomatous perennial herb growing erect 10 to 30 centimeters tall. It has one pair of green oval leaves each up to 7 centimeters long near the base of the stem. The inflorescence is a small raceme of green or yellow-green flowers. Each has usually 3 lance-shaped sepals, 2 similar petals, and one petal known as the lip, which is longer and rounded at the end.
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
4 - 11.8 in tall

Flower Color
Flower Color
Yellow, Green

Landscaping Information
Natural Setting
Climate
Climate
Annual Precipitation: 63.8" - 63.8", Summer Precipitation: 2.68" - 2.68", Coldest Month: 36.2" - 36.2", Hottest Month: 56.3" - 56.3", Humidity: 2.55" - 11.72", Elevation: 5171" - 5171"

Alternative Names
Common Names: Northwestern Twayblade


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


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