Symphyotrichum oolentangiense

Azure Aster or Skyblue Aster

Symphyotrichum oolentangiense (Riddell) Nesom is native to open, dry, sandy, loamy, or rocky soils, dry to wet (seasonally drying) prairies, alvars, glades, bluffs, dunes, barrens, open deciduous woods, oak and/or pine savannahs in eastern North America (Brouillet et al. 2006; FNA). The species was known as Aster azureus Lindley for a long time but the name Aster oolentangiensis Riddell is slightly older and has nomenclatural priority.

Symphyotrichum oolentangiense 5196 WI

Symphyotrichum oolentangiense, large plant, Semple & Chmielewski 5196 WAT, Wisconsin

Symphyotrichum oolentangiense hds Glen Morris ON

Symphyotrichum oolentangiense, heads, Glen Morris, Ontario

Symphyotrichum oolentangiense frt S 2477 ON

Symphyotrichum oolentangiense, fruit, Semple 2477 WAT, Ontario

Symphyotrichum oolentangiense pappus tips S 2477 ON

Symphyotrichum oolentangiense, pappus bristle tips, Semple 2477 WAT, Ontario

Symphyotrichum Nees. pp. 465-539. In Flora North America Editorial Committee, eds. Flora of North America. Vol. 20. Asteraceae, Part 2. Astereae and Senecioneae. Oxford University Press, New York.

Revised 13 May 2021 by J.C. Semple