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Potentilla rhypara

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(Redirected from Ivesia rhypara)

Potentilla rhypara

Imperiled  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Genus: Potentilla
Species:
P. rhypara
Binomial name
Potentilla rhypara
(Ertter & Reveal) Mosyakin & Shiyan
Synonyms
  • Ivesia rhypara Ertter & Reveal

Potentilla rhypara, also known as grimy mousetail and grimy ivesia, is a species of flowering plant in the rose family.[1] It is native to Oregon and Nevada in the United States.[2]

Description

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Potentilla rhypara is a perennial herb that grows from woody roots and a branching caudex.[3] It has hairy, overlapping, compound basal leaves and stems up to 15 centimeters long. At the ends of the stems are clustered white or pale-yellow flowers. Blooming occurs in May through October.[2][4]

Taxonomy

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The species epithet rhypara ("grimy" in Greek) is derived from its dusty appearance and from its discoverer, James W. Grimes.[4][5]

There are two varieties of this plant. The var. rhypara grows on barren tuff and var. shellyi grows in rock cracks and crevices on pumice and tuff.[2] When the plants grow in rock fissures they sometimes appear to be lined up in rows.[5] Associated plants include Purshia tridentata, Poa sandbergii,[2] Gilia congesta, Sitanion hystrix, Scutellaria nana, and Eriophyllum lanatum.[4]

Threats

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Threats to this species, particularly var. rhypara, include gold mining, as the habitat contains gold deposits. Other threats include cattle, off-road vehicles, fire suppression, and loss of pollinating insects.[5]

References

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  1. ^ "Potentilla rhypara (Ertter & Reveal) Mosyakin & Shiyan | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2024-06-13.
  2. ^ a b c d Ivesia rhypara. The Nature Conservancy.
  3. ^ Ivesia rhypara. Archived 2010-05-27 at the Wayback Machine Nevada Natural Heritage Program.
  4. ^ a b c Ivesia rhypara. Oregon Department of Agriculture.
  5. ^ a b c Ivesia rhypara var. rhypara. Archived 2011-10-26 at the Wayback Machine Center for Plant Conservation.