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robust spineflower

Scientific Name: Chorizanthe robusta var. robusta

Family: Polygonaceae

Category: Dicot

Growth: Forb/herb

Duration: Annual

Other Names:

       

Robust Spineflower (Chorizanthe robusta)

The Robust Spineflower, scientifically known as Chorizanthe robusta, is an endangered annual herb native to California.

Considerations for Pets

  • As a "spineflower," this plant may possess thorns or sharp edges.

Taxonomy and Nomenclature

  • Scientific Name: Chorizanthe robusta
  • Common Name: Robust Spineflower, Scotts Valley spineflower
  • Family: Polygonaceae (Buckwheat family)
  • Synonyms: Chorizanthe pungens Bentham var. robusta (Parry) Jepson
  • Varieties:
    • Chorizanthe robusta var. robusta
    • Chorizanthe robusta var. hartwegii (Benth.) Reveal & R. Morgan

Distribution and Habitat

  • The Robust Spineflower is endemic to California.
  • It is a coastal resident found in sandy soils.
  • Specific locations include Scotts Valley.
  • It may be found in woodlands composed of hardwood, conifer, and shrub species, associated with streams or not.

Ecological Role

  • The Robust Spineflower is currently on the U.S. Endangered Species List and classified as endangered in California.
  • It is subject to herbivory.

Morphological Characteristics

  • The Robust Spineflower is an annual herb, described as wiry.
  • It is considered a forb/herb, which means it is a non-woody plant that is not a grass.
  • It's a small annual plant, growing to about 10 inches tall.

Genetic Information

  • A 2009 genetic study focused on the Pungentes subsection of Chorizanthe.

Interactions with Other Organisms

  • The Robust Spineflower is subject to herbivory.
  • Hybridization with Monterey spineflowers (Chorizanthe pungens) has been investigated.

Further Information

  • NatureServe Explorer
  • U.S. Fish and Wildlife Service
  • Discover Life
  • CalPhotos
  • San Jose State University ScholarWorks