Calflora Taxon Report
Triantha occidentalis (S. Watson) R. R. Gates
Western false asphodel
Triantha occidentalis is a perennial herb that is native to California.

Alternate Names and Sources:
Tofieldia occidentalisOTHER
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
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Accepted by: PLANTS + POWO
Jepson eFlora section:
monocot
USDA PLANTS group:
Monocot

Occurs usually in wetlands, occasionally in non wetlands

[Wikipedia] History, Carnivory, Range: Botanical history Triantha occidentalis was described by Sereno Watson in 1879 as Tofieldia occidentalis, and reassigned to Triantha by R. R. Gates in 1918.[3][4] The carnivorous behavior of the plant was discovered in 2021 by a group of scientists from the University of British Columbia and the University of Wisconsin–Madison.[5][6] Range The native range of Triantha occidentalis is from Southeast Alaska to Central California. The range includes the US states of Alaska, California, Idaho, Montana, Oregon, Washington, and Wyoming and the Canadian provinces of Alberta and British Columbia.[1] Carnivory Triantha occidentalis is a carnivorous plant; the flower stems are covered in a sticky substance, and have tiny hairs that produce a digestive enzyme, a phosphatase. The sticky substance is able to trap small insects, which are digested by the enzyme from the hairs, allowing the plant to absorb their nutrients.[7][5] Other carnivorous plants have insect traps well away from flowers, in positions where pollinating insect such as bees and butterflies are not affected; T. occidentalis's sticky flower stems are only able to trap smaller insects such as fruit flies.[5][8] It was not suspected that T. occidentalis, which grows near urban centers, was carnivorous until it was found to have a genetic deletion sometimes seen in carnivorous plants, prompting investigation. The plant is, as of 2021, the only one known to trap insects this unsuspected way, but it has been suggested that there may be more.[7][8] (link added by Mary Ann Machi)

Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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