Page authors: David Giblin, Ben Legler
Phlox diffusa
spreading phlox
WTU specimens
Other herbaria

Distribution: Widely distributed throughout most of Washington; British Columbia south to California, east to the Rocky Mountains and into the Great Plains in the north.

Habitat: Open, often rocky areas, mid- to high elevations in the mountains.

Flowers: May-August

Origin: Native

Conservation Status: Not of concern

Description:
General:

Taprooted, tufted perennial, forming loose mats up to 1 dm. tall.

Leaves:

Leaves opposite, narrowly linear but rather soft, green and glabrous, up to 20 mm. long and 2 mm. wide.

Flowers:

Flowers solitary and sessile at the ends of the branches; calyx covered with loose, soft hairs, with flat, papery intervals between the herbaceous segments, the 5 lobes narrow and thickened; corolla white to light pink or blue, the tube 9-17 mm. long, nearly twice as long as the calyx, the 5 lobes 5-9 mm. long; filaments short and unequally attached in the corolla tube, style 3-parted, 5-8 mm. long; ovary superior.

Fruits:

Capsule 3 celled, with one seed in each cell.

Accepted Name:
Phlox diffusa Benth.

Synonyms & Misapplications:
Phlox cyanea Eastw.
Phlox diffusa Benth. ssp. longistylis Wherry [KZ99]
Phlox diffusa Benth. ssp. subcarinata Wherry [JPM]
Phlox diffusa Benth. var. longistylis (Wherry) M. Peck [HC]
Additional Resources:

PNW Herbaria: Specimen records of Phlox diffusa in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Phlox diffusa checklist entry.

E-Flora BC: Phlox diffusa atlas page.

CalPhotos: Phlox diffusa photos.

USDA Plants: Phlox diffusa information.

81 photographs:
Group by