Difference between revisions of "Perideridia montana"

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Revision as of 12:55, 16 April 2012

Perideridia gairdneri, also called Gairdner's yampah, common yampah, or Gardner's yampah is a flowering plant in the Apiaceae family.


  • Kingdom - Plantae – Plants
  • Subkingdom - Tracheobionta – Vascular plants
  • Superdivision - Spermatophyta – Seed plants
  • Division - Magnoliophyta – Flowering plants
  • Class -Magnoliopsida – Dicotyledons
  • Subclass - Rosidae
  • Order - Apiales
  • Family - Apiaceae – Carrot family
  • Genus - Perideridia
  • Species - P. gairdneri


P. gairdneri is a thick, tuberous rooted perennial herb that is slender and hairless. It has solitary, leafy stems, and grows from 40 - 120 cm tall. It has several, well distributed leaves that are once or two times pinnately divided into long, narrow segments. Flowers are white or pink and small, and are united in groups to form one to several compound umbels. Fruits are nearly spherical and slightly flattened, with distinct ribs. Fruits 2 - 3 mm long.

Source: Pojar pg 221

Bloom Period

July to August Source: http://biology.burke.washington.edu/herbarium/imagecollection.php


Occurs from British Columbia to Saskatchewan, south across the Rockies and West Coast, down to Southern California.

Source: http://plants.usda.gov/java/profile?symbol=PEGA3


Dry to vernally moist open forest, meadow, or grassy slope. Low to middle elevation.

Source: Pojar 221


Roots of P. gairdneri were eaten my Straits Salish and other First Peoples groups of the Northwest, and by interior peoples from south central British Columbia, to the great basin. Teh froots were pointed by native people to make flour.

Source: Pojar pg 221


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