Achlys triphylla

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Achlys triphylla
Vanilla Leaf (5659254875).jpg
Achlys triphylla (Rood Bridge Park, Hillsboro, Oregon)
Status TNC G5.svg
Secure  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Family: Berberidaceae
Genus: Achlys
Species:
A. triphylla
Binomial name
Achlys triphylla
(Sm.) DC.
Synonyms [2]

Leontice triphyllaSmith in A. Rees

Achlys triphylla, with the common names deer foot, vanilla leaf, [3] or sweet after death, is a plant species native to the mountains of the West Coast of North America.

Contents

Description

Achlys triphylla is an herb up to 50 centimetres (20 in) tall. [3] It grows in patches of paired stalks, one topped by a leaf, the other a flower spike. [3] The leaf is trifoliate, with leaflets up to 10 cm (4 in) long; the middle leaflet has 3–5 or exceptionally 8 teeth. [3] The dried leaves smell like vanilla. [3]

Blooming from April to June, the flower spike is up to 5 cm (2 in) long, with small flowers lacking petals and sepals, but including 6–13 white stamens. [3]

Similar species

The species resembles A. californica , which has 6–8 (up to 12) teeth on the middle leaflet. [3]

Distribution and habitat

Native to the woods [3] of mountains of the West Coast of North America, the species has been reported from the Cascades and from the Coast Ranges in British Columbia, Washington, Oregon and northern California, at elevations of up to 1,500 metres (4,900 ft). [4]

Host Associations

This plant is the sole host of the west coast endemic aphid Macrosiphum tuberculaceps. [5]

Medicinal uses

Multiple Pacific Northwest tribes use the leaves in an infusion drink for tuberculosis. One Lummi informant said the whole plant was mashed and soaked in water, which was drunk as an emetic. [6]

References

  1. "NatureServe Explorer - Achlys triphylla". NatureServe Explorer Achlys triphylla. NatureServe. 2022-05-30. Retrieved 30 May 2022.
  2. The Plant List
  3. 1 2 3 4 5 6 7 8 Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. pp. 409–410. ISBN   978-0-375-40233-3.
  4. Flora of North America vol 3
  5. "Macrosiphum tuberculaceps (Sweet-after-death aphid) identification, images, ecology, control". influentialpoints.com. Retrieved 2025-12-17.
  6. "Ethnobotany of Western Washington" by Erna Gunther. page 31