Phlox caespitosa

Phlox caespitosa is a species of phlox known by the common name tufted phlox. It is native to western North America from British Columbia through the Great Basin to New Mexico, where it grows in scrub, woodland, and other open plateau habitat. It is one of several cushion-forming species that occur in the same region and require careful observation to distinguish.[1] In the past, this species and Phlox douglasii have been erroneously lumped together.[1]

Phlox caespitosa
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Polemoniaceae
Genus: Phlox
Species:
P. caespitosa
Binomial name
Phlox caespitosa

Description

It is a mat-forming perennial herb growing in patches of short, hairy, glandular stems. The stems are lined with pairs of very narrow, sharp-tipped linear leaves each under a centimeter in length. The inflorescence is a solitary flower or cluster of up to three flowers at the tip of each stem. The flower is white or light pink or lavender with five rounded lobes. It is around a centimeter long.

References
  1. James H. Locklear (2010), "Columbia Phlox (Phlox douglasii Hook.)" (PDF), Kalmiopsis, 17: 1–8


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