Phlox douglasii

Phlox douglasii, common name tufted phlox or Columbia phlox, is a species of perennial herb belonging to the family Polemoniaceae. In the past it has been mistakenly included within the species Phlox caespitosa.[1]

Phlox douglasii
Flowers of Phlox douglasii at the Giardino Botanico Alpino Chanousia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Polemoniaceae
Genus: Phlox
Species:
P. douglasii
Binomial name
Phlox douglasii
Hook.
Synonyms[1][2]
  • Phlox rigida Benth.
  • Phlox douglasii subsp. rigida (Benth.) Wherry

Description

Phlox douglasii can reach a height of about 10 cm. This plant forms shrubs, low mounds or cushions of simple needle-like dark green leaves, 4–8 millimetres (0.16–0.31 in) long. Flowers may be purple, pink, pale lavender or magenta-red, about 1.5 cm across, usually in terminal clusters. They bloom from April to August.

Distribution

Phlox douglasii is native to northwestern United States.

Habitat

This species prefers dry areas, sagebrush scrubs and woodlands, at elevation of 1,500–2,000 metres (4,900–6,600 ft) above sea level.

Cultivars

The following hybrid cultivars have received the Royal Horticultural Society's Award of Garden Merit:

  • 'Boothman's Variety'[3] (pink, darker eye)
  • 'Crackerjack'[4] (magenta)
  • 'Iceberg'[5] (white)
  • 'Kelly's Eye'[6] (pale pink)
  • 'Red Admiral'[7] (deep pink)

References
  1. James H. Locklear (2010), "Columbia Phlox (Phlox douglasii Hook.)" (PDF), Kalmiopsis, 17: 1–8
  2. Jepson Herbarium - University of California, Berkeley
  3. "Phlox douglasii 'Boothman's Variety'". RHS. Retrieved 18 January 2021.
  4. "Phlox douglasii 'Crackerjack'". RHS. Retrieved 18 January 2021.
  5. "Phlox douglasii 'Iceberg'". RHS. Retrieved 18 January 2021.
  6. "Phlox douglasii 'Kelly's Eye'". RHS. Retrieved 18 January 2021.
  7. "Phlox douglasii 'Red Admiral'". RHS. Retrieved 18 January 2021.


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