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heartleaf suncup

Scientific Name: Camissonia cardiophylla

Family: Onagraceae

Category: Dicot

Growth: Forb/herb

Duration: Annual, Perennial

Other Names:

       

Heartleaf Suncup (Chylismia cardiophylla)

The Heartleaf Suncup, scientifically known as Chylismia cardiophylla, is a captivating wildflower native to the southwestern United States and northwestern Mexico. Also referred to as heartleaf evening primrose, this plant belongs to the Evening Primrose family (Onagraceae).

Taxonomy and Nomenclature

  • Scientific Name: Chylismia cardiophylla (Torrey) Small ssp. cardiophylla
  • Common Name: Heartleaf Suncup
  • Family: Onagraceae (Evening Primrose Family)
  • Kingdom: Plantae
  • Taxonomic Rank: Species
  • Synonyms: Camissonia cardiophylla (Torr.) P.H. Raven subsp. cardiophylla

Distribution and Habitat

Chylismia cardiophylla is native to the deserts of northwestern Mexico and is found in the western and southwestern United States, including California (e.g., Silvia's Wash, Joshua Tree National Park) and Sonora, Mexico (e.g., wash below Sykes Crater, Pinacate Biosphere Reserve).

Morphological Characteristics

  • The flowers have 4 petals, measuring between 7-11 mm.
  • Flowers are yellow.
  • The flowers open at dusk.
  • Flowers grow densely on the stem and have a nodding habit.