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United States, Public domain, via Wikimedia Commons" href="">Perideridiaoregana

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Apiales

Familia: Apiaceae
Subfamilia: Apioideae
Tribus: Oenantheae
Genus: Perideridia
Species: Perideridia oregana

Perideridia oregana (S.Watson) Mathias, 1936

Edosmia oregana Nutt. ex Torr. & A.Gray

Native distribution areas:

Continental: Northern America
USA (California, Oregon, Washington State)

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition

Mathias, M.E., Brittonia; a Series of Botanical Papers. New York, NY 2:243. 1936


Hassler, M. 2018. Perideridia oregana. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2018. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2018 Aug. 25. Reference page.
International Plant Names Index. 2018. Perideridia oregana. Published online. Accessed: Aug. 25 2018.
The Plant List 2013. Perideridia oregana in The Plant List Version 1.1. Published on the internet. Accessed: 2018 Aug. 25. 2018. Perideridia oregana. Missouri Botanical Garden. Published on the internet. Accessed: 2018 Aug. 25.
USDA, ARS, Germplasm Resources Information Network. Perideridia oregana in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
English: Oregon yampah, squaw potato

Perideridia oregana is a species of flowering plant in the family Apiaceae known by the common names Oregon yampah and eppaw.[1] It is native to Oregon and California in the western United States, where it grows in woodland and other habitat. This plant is quite variable in appearance. In general, it is a perennial herb 10 to 90 centimeters tall, its green to waxy-grayish erect stem growing from a cluster of small tubers. Leaves near the base of the plant have blades 3 to 30 centimeters long divided into a variable number of leaflets, which may be subdivided into smaller segments. The inflorescence is a compound umbel of many spherical clusters of small white flowers. These yield ribbed, oblong-shaped fruits 3 to 6 millimeters long.

Full Report (All Nutrients): Perideridia oregana. National Nutrient Database for Standard Reference. USDA ARS.

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