Symphyotrichum jessicae

Jessica’s Aster

Symphyotrichum jessicae (Piper) Nesom is a rare species native to dry grasslands, meadows, stream banks, openings in Ponderosa pine woodlands, roadside embankments in the Palouse and Clearwater river drainages of eastern Washington and adjacent northwestern Idaho (Brouillet et al. 2006; ). Stems are densely puber­ulent to lanate, especially distally; leaves are densely cinereous to lanate, bases clasping; rays are violet.  The species is decaploid (2n=80).

Symphyotrichum jessicae is of conservation concern.

Brouillet, L., J.C. Semple, G.A. Allen,Ìý K. Chambers and S. Sundburg. 2006.  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.

Last revised 14 May 2025 by J.C. Semple

© 2025 J.C. Semple, including all photographs unless otherwise indicated

Symphyotrichum jessicae colony 4390 WA
Symphyotrichum jessicae stm invols 4390 WA
Symphyotrichum jessicae hds 4390 WA
Symphyotrichum jessicae range map draft JCS

1-4. Symphyotrichum jessicae,ÌýSemple & Brouillet 4390, Whitman Co., Washington. 1. Roadside colony. 2. Hairy stem and involucres. 3. Flowering heads. 4. Range map draft JCS.