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la graciosa thistle

Scientific Name: Cirsium loncholepis

Family: Asteraceae

Category: Dicot

Growth: Forb/herb

Duration: Annual, Biennial, Perennial

Other Names: CA (La Graciosa thistle)

       

La Graciosa Thistle (Cirsium loncholepis)

The La Graciosa thistle is a rare and fascinating plant native to California. This page provides information about its classification, habitat, conservation status, and other interesting facts.

Considerations for Pets

  • As a thistle, Cirsium loncholepis likely possesses prickly or spiny features.

Considerations for Children

  • As a thistle, Cirsium loncholepis likely possesses prickly or spiny features.

Nomenclature and Taxonomy

  • Scientific Name: Cirsium loncholepis
  • Common Name: La Graciosa Thistle
  • Family: Asteraceae (Sunflower Family)
  • Synonyms: Cirsium loncholepis Petrak (Note: the text indicates this is not an active name)
  • The text references Cirsium scariosum var. loncholepis, suggesting a taxonomic relationship or previous classification.
  • Also the text references Cirsium scariosum var. citrinum.

Distribution and Habitat

  • Endemic to California.
  • Specifically found in San Luis Obispo County, California.
  • Found in about 17 locations.
  • Prefers lowland plants in nearly frost-free coastal areas.
  • Upland populations can be found in meadows within montane zones (1500–2000).

Conservation Status

  • Listed as threatened by the state of California. Killing or possessing the plant is prohibited.
  • On the U.S. Endangered Species List.
  • Classified as endangered in California.
  • Included in the CNPS Inventory of Rare and Endangered Plants on list 1B.1 (rare, threatened, or endangered in California).
  • Critical habitat designated for the La Graciosa Thistle has been established.

Morphological Characteristics and Growth Habits

  • Described as a forb/herb (a non-woody plant that is not a grass).
  • White and purple flowered member of the sunflower family.

Resources and Further Information

  • USDA PLANTS database: http://plants.usda.gov
  • CalPhotos
  • Encyclopedia of Life
  • Integrated Taxonomic Information System (ITIS)
  • NCBI Taxonomy
  • NatureServe
  • CNPS Inventory of Rare and Endangered Plants
  • Discover Life
  • MarineCadastre.gov (www.marinecadastre.gov)