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peregrine thistle

Scientific Name: Cirsium cymosum

Family: Asteraceae

Category: Dicot

Growth: Forb/herb

Duration: Perennial

Other Names:

       

Peregrine Thistle (Cirsium cymosum)

Cirsium cymosum, commonly known as peregrine thistle, is a species of thistle native to North America.

Considerations for Pets

  • The plant is a thistle, which may have sharp points or prickles.
  • The stems and leaves are covered with soft, cobwebby, straight hairs.

Taxonomy and Nomenclature

  • Scientific Name: Cirsium cymosum
  • Common Name: Peregrine Thistle
  • Synonym: Cirsium cymosum (Greene) J.T. Howell
  • A variety is known as Cirsium cymosum var. cymosum
  • Family: Asteraceae (Composite Family)
  • It is a forb/herb ( a forb/herb is a non-woody plant that is not a grass) of the genus Cirsium.

Distribution and Habitat

  • Native to the western United States.
  • Specifically native to California and parts of Oregon.
  • Grows in several types of mountain areas in California.

Morphological Characteristics

  • Erect, straight stems, usually unbranched below the inflorescence.
  • Stems are covered with soft, cobwebby, straight hairs.
  • Perennial plant typically growing to 2-5 feet tall.
  • Leaves are soft and hairy.
  • Flowers are dull white and "cobwebby."