E-Flora BC: Electronic Atlas of the Flora of British Columbia

Phlox longifolia Nutt.
long-leaved phlox (longleaf phlox)
Polemoniaceae (Phlox family)

Introduction to Vascular Plants

© Brian Klinkenberg  Email the photographer   (Photo ID #6089)

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Distribution of Phlox longifolia
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Species Information

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Perennial herb from a taproot or branching, underground stem-base; stems somewhat woody at the base, hairless to hairy or glandular (especially in the inflorescence), 10-40 cm tall.
Opposite, linear, 1.5-8 cm long, 1-2.5 mm wide, internodes well-developed.
Inflorescences loose, leafy-bracted, terminal clusters of slender-stalked, sweet-smelling flowers; corollas pink to white, the tube 10-18 mm long, spreading to five wide lobes 7-15 mm long; calyces not glandular, the transparent segments between the green ribs bulging-keeled toward the base; styles 6-15 mm long.
Capsules, 3-chambered, few-seeded.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source:  The USDA

Habitat / Range

Dry, open, rocky sites and sagebrush slopes in the steppe and montane zones; locally frequent in SC BC; S to CO, WY, NM and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Phlox longifolia

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres) 280 543 1920
Slope Gradient (%) 0 24 75
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 274 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 2 7
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: BG(119), ESSF(2), IDF(15), PP(28)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Phlox longifolia subsp. longipes (M.E. Jones) Wherry
Phlox longifolia var. longipes (M.E. Jones) M. Peck
Phlox longifolia var. puberula E.E. Nelson

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References