Triantha occidentalis (S. Watson) R. R. Gates ssp. occidentalis
Western false asphodel
2004 Steve Matson 2020 R.A. Chasey 2004 Steve Matson 2020 R.A. Chasey 2021 R.A. Chasey 2008 Keir Morse 2021 Suzanne L. Weakley 2019 Richard Spjut 2018 Matt Berger 0000 Richard Spjut 2019 Julie Kierstead Nelson 2019 Julie Kierstead Nelson 2006 Steve Matson 2006 Steve Matson 2020 Hunter Breck 2020 Mark Kircher 2004 Steve Matson 2004 Steve Matson 2006 Steve Matson 2006 Steve Matson 2006 Steve Matson 2006 Steve Matson 2009 Anna Bennett
Triantha occidentalis ssp. occidentalis is a perennial herb that is native to California, and also found elsewhere in western North America.
[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. 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.
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.
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. 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. 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.
The following subspecies are accepted:
Triantha occidentalis subsp. brevistyla (C.L.Hitchc.) Packer
Triantha occidentalis subsp. montana (C.L.Hitchc.) Packer
Triantha occidentalis subsp. occidentalis (contributed by Mary Ann Machi)
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2004 Steve Matson:!2020 R.A. Chasey:!2004 Steve Matson:!2020 R.A. Chasey:!2021 R.A. Chasey:!2008 Keir Morse:!2021 Suzanne L. Weakley:!2019 Richard Spjut:!2018 Matt Berger:!0000 Richard Spjut:!2019 Julie Kierstead Nelson:!2019 Julie Kierstead Nelson:!2006 Steve Matson:!2006 Steve Matson:!2020 Hunter Breck:!2020 Mark Kircher:!2004 Steve Matson:!2004 Steve Matson:!2006 Steve Matson:!2006 Steve Matson:!2006 Steve Matson:!2006 Steve Matson:!2009 Anna Bennett:!
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2023. Berkeley, California:The Calflora Database
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