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knotweed spineflower

Scientific Name: Chorizanthe polygonoides var. longispina

Family: Polygonaceae

Category: Dicot

Growth: Forb/herb

Duration: Annual

Other Names:

       

Chorizanthe polygonoides: Knotweed Spineflower

Chorizanthe polygonoides, commonly known as knotweed spineflower, is a flowering plant belonging to the buckwheat family (Polygonaceae).

Considerations for Pets

  • The name "spineflower" may indicate the presence of spines or potentially sharp features on the plant.

Taxonomy and Nomenclature

  • Scientific Name: Chorizanthe polygonoides Torr. & A. Gray
  • Common Name: Knotweed Spineflower
  • Family: Polygonaceae (Buckwheat family or Knotweed family)
  • Synonym: Acanthogonum polygonoides (Torrey & A. Gray) Goodman
  • Varieties:
    • Chorizanthe polygonoides var. polygonoides
    • Chorizanthe polygonoides var. longispina (Goodman) Munz

Distribution and Habitat

  • Native to California.
  • Found in western North America and South America.
  • Specific locations mentioned include Orange County, California; Garland Ranch, Palo Corona, and Santa Lucia Preserve.

Morphological Characteristics and Growth Habits

  • Classified as a forb/herb, which is a non-woody plant that is not a grass.
  • Can be either an annual or perennial herb.
  • Medium in size.
  • In summer, it can assume a white coloring.
  • The text notes that it is sometimes evergreen.
  • Prefers a location with at least a few hours of direct sunlight daily for balanced development.

Ecological Role

  • One variety, Chorizanthe polygonoides var. longispina, is mentioned as "most problematic" among other spineflower varieties.