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Berlandier's sundrops

Scientific Name: Calylophus berlandieri

Family: Onagraceae

Category: Dicot

Growth: Subshrub, Forb/herb

Duration: Perennial

Other Names:

       

Berlandier's Sundrops: A Splash of Yellow in Your Garden

Berlandier's sundrops, scientifically known as Calylophus berlandieri, is a delightful perennial subshrub celebrated for its vibrant yellow flowers. It also goes by the common names Square-bud Primrose and Texas Primrose.

Considerations for Pets

  • This is a bushy plant, ranging from 4 to 20 inches in height.
  • The plant is a subshrub, growing as a herbaceous forb/herb.

Taxonomy and Nomenclature

  • Scientific Name: Calylophus berlandieri Spach
  • Family: Onagraceae (Evening-Primrose Family)
  • Kingdom: Plantae
  • Taxonomic Rank: Subspecies (e.g., Oenothera berlandieri ssp. pinifolia, Calylophus berlandieri ssp. berlandieri)
  • Synonym: Calylophus drummondianus var. berlandieri (mentioned in the text as a synonym for Texas Primrose)
  • Alternative Scientific Names: Oenothera berlandieri (older classification)

Distribution and Habitat

  • Native to Texas and surrounding states.
  • Thrives in full sun to part shade.
  • Prefers average to gritty, well-drained soil that is moist but not waterlogged.

Morphological Characteristics

  • Bushy plant, growing 4-20 inches tall.
  • Flowers are showy and yellow, approximately 2 inches across.
  • Petals are broad and crinkled.
  • Growth habit described as subshrub and forb/herb.
  • Deciduous perennial.

Blooming Period

  • Extended blooming period, with bright yellow blooms in spring and autumn.
  • Bloom time in 1852 was noted to be 6 or 8 weeks from the beginning of April.

Cultivation

  • Tolerates high summer heat.
  • Suitable for Zones 6-10.
  • Spacing/Spread: 1 foot.