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Ionactis linariifolius (Flaxleaf whitetop aster)
Stuart, Will

Ionactis linariifolius

Ionactis linariifolius (L.) Greene

Flaxleaf Whitetop Aster, Stiff Aster, Flaxleaf Aster

Asteraceae (Aster Family)

Synonym(s): Aster linariifolius, Aster linariifolius var. victorinii

USDA Symbol: IOLI2

USDA Native Status: L48 (N), CAN (N)

Stiff, leafy stalk is terminated by several flower heads with blue ray flowers and yellow center disc flowers that turn bronzy.

Numerous short stems form a mound of flowers in colors ranging from deepest lavender to pinks and whites.


From the Image Gallery

6 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Up to about 28 inches tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: White , Yellow , Blue , Purple
Bloom Time: Jun , Jul , Aug , Sep , Oct , Nov


USA: AL , AR , CT , DC , DE , FL , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MO , MS , NC , NH , NJ , NY , OH , OK , PA , RI , SC , TN , TX , VA , VT , WI , WV
Canada: NB , QC
Native Distribution: Southern Ontario to New Brunswick; New England south to northwest Florida; west to Louisiana and eastern Texas; north to Minnesota.
Native Habitat: Dry clearings, rocky banks.

Growing Conditions

Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Dry , Moist
Soil Description: Sandy


Conspicuous Flowers: yes

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Mt. Cuba Center - Hockessin, DE

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Ionactis linariifolius in USDA Plants
FNA: Find Ionactis linariifolius in the Flora of North America (if available)
Google: Search Google for Ionactis linariifolius


Record Modified: 2022-12-29
Research By: TWC Staff

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