Calochortus lyallii explained

Calochortus lyallii, or Lyall's mariposa lily, is a North American species of flowering plant in the lily family. It is native and endemic to Province of British Columbia in western Canada, as well as the State of Washington in the northwestern United States.^{[1] [2] [3] [4] [5] [6]} It only grows east of the Cascade crest in the mountains and foothills, and though its numbers are apparently secure in Washington, it is considered to be a blue-listed species in Canada- blue-listed taxa are at risk, but are not extirpated, endangered or threatened.^[7] It is found in dry to mesic open forest at lower to middle elevations in the mountains, commonly found with Pinus ponderosa (Ponderosa pine), Pseudotsuga menziesii (Douglas fir), Calamagrostis rubescens (pinegrass) and Carex geyeri (elk sedge).^[8]

Description

Calochortus lyallii is a bulb-producing perennial herb up to about 50 centimeters tall. Flowers are upright, bell-shaped, white to pale violet with darker markings on the petals.^{[9] [10] [11]}

External links

• WTU Herbarium Images
• USDA Plants Database for Calochortus lyalli
• E-Flora BC Atlas page for Calochortus lyallii
• Calochortus lyallii in Flora of North America

Notes and References

1. Douglas, G.W., Meidinger, D. & Penny, J.L. (2002). Rare Native Vascular Plants of British Columbia, ed. 2: 1-358. Province of British Columbia.
2. Gerritsen, M.E. & Parsons, R. (2007). Calochortus: Mariposa lilies & their relatives: 1-232. Timber press, Inc. Portland, U.S.A.
3. http://www.pnwflowers.com/flower/calochortus-lyallii Turner Photographics Wildflowers of the Pacific Northwest
4. http://bonap.net/MapGallery/County/Calochortus%20lyallii.png Biota of North America Program 2014 county distribution map
5. http://biology.burke.washington.edu/herbarium/imagecollection.php?SciName=Calochortus%20lyallii Burke Museum of Natural History and Culture, University of Washington, Calochortus lyallii
6. https://www.frames.gov/rcs/ttrs/12000/12008.html Tall Timbers E.V. Komarek Fire Ecology Database, Status of Lyall's Mariposa Lily, Calochortus lyallii (Liliaceae), in Canada
7. Web site: No Atlas Page Present.
8. Web site: Burke Herbarium Image Collection.
9. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242101478 Flora of North America, Vol. 26 Page 130, Calochortus lyallii S. Watson
10. http://bonap.net/MapGallery/County/Calochortus%20lyallii.png Biota of North America Program 2014 county distribution map, Calochortus lyallii
11. https://www.biodiversitylibrary.org/page/238074#page/312/mode/1up Baker, John Gilbert 1874. Journal of the Linnean Society, Botany 14(76): 305