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Phlox bifida ssp. stellaria (Glade phlox)
Cressler, Alan

Phlox bifida ssp. stellaria

Phlox bifida Beck ssp. stellaria (A. Gray) Wherry

Glade Phlox, Starry Cleft Phlox, Cleft Phlox, Wherry Cleft Phlox

Polemoniaceae (Phlox Family)

Synonym(s): Phlox bifida var. cedaria, Phlox bifida var. stellaria, Phlox stellaria


USDA Native Status: L48 (N)

Glade Phlox, a subspecies of Cleft Phlox, is a mat-forming perennial subshrub. Leaves are linear. It has eglandular trichomes or no trichomes. Each flower has five bifid corolla lobes, divided about 1/4 to 1/2 their length.

This is a state-listed Endangered taxon in Indiana and a state-listed Threatened taxon in Kentucky, Michigan and Tennessee.


From the Image Gallery

2 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Subshrub
Leaf Arrangement: Opposite
Leaf Complexity: Simple
Leaf Shape: Linear
Breeding System: Flowers Bisexual
Inflorescence: Cyme
Fruit Type: Capsule
Size Notes: Sprawling, mat-forming plant to about 8 inches in height.
Leaf: Leaf is sessile and slightly clasping.

Bloom Information

Bloom Color: White , Blue
Bloom Time: Mar , Apr , May
Bloom Notes: Flowers are usually pale blue; sometimes white.


USA: AR , IL , IN , KY , MO , TN
Native Habitat: Cedar glades, rocky bluffs, sandhills.

Growing Conditions

Water Use: Low
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Soil pH: Alkaline (pH>7.2)
CaCO3 Tolerance: High
Drought Tolerance: High
Soil Description: Thin soils on Limestone glades or on rocky slopes.

Additional resources

USDA: Find Phlox bifida ssp. stellaria in USDA Plants
FNA: Find Phlox bifida ssp. stellaria in the Flora of North America (if available)
Google: Search Google for Phlox bifida ssp. stellaria


Record Modified: 2016-07-08
Research By: JAM

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