Plant Data

Names and Taxonomy

  • Common Names: Cooper’s Paper Daisy, Whitestem Paperflower, White-stem Paper-flower, Yellow Paper Daisy
  • Synonyms: Psilostrophe cooperi, Riddellia cooperi
  • Family: Asteraceae (Daisy/Sunflower)
  • Genus Information:

Habit and Size

  • Duration: perennial
  • Habit: shrub
  • Shape: round
  • Size: up to 20 inches
  • Stem: woody

Leaves

  • Color: green
  • Shape: linear
  • Edge: hairy
  • Arrangement: alternate
  • Leaf Retention: drought deciduous

Flowers and Fruit

  • Sex: monoecious
  • Flower Color: yellow
  • Flower Size: 2 inch
  • Number of Petals: 4
  • Bloom: Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
  • Fruit: cypsela

Habitat and Growing Conditions

  • Water Use: infrequent, deep watering
  • Light: full sun
  • Soil: well drained
  • Habitat: deserts and mesas

Distribution

  • Distribution: AZ, CA, NM, NV, UT
  • Seen: NV (Red Rock Canyon)
  • Elevation: 2000-5000 feet (600-2000 m)

Photographs

Cooper’s Paper Daisy (Psilostrophe cooperi)

Red Rock Canyon, Las Vegas

Cooper’s Paper Daisy (Psilostrophe cooperi)

Red Rock Canyon, Las Vegas

Cooper’s Paper Daisy (Psilostrophe cooperi)

Red Rock Canyon, Las Vegas