Symphyotrichum oblongifolium (Nutt.) G.L. Nesom - Aromatic Aster


 

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Symphyotrichum oblongifolium - (image 1 of 5)

 

Taxonomy

Family: Asteraceae

Habitat

Dry, usually open places.

Associates

 

Distribution

PA and DC, south in mountains to NC and northern AL, west to ND, WY, and NM.

Morphology

Herbaceous perennial, rhizomatous and sometimes also with a short caudex; stems 10-100 cm, rigid, brittle, usually branched, glandular and commonly also hairy or scabrous; leaves firm, sessile and more or less auriculate-clasping, narrowly to broadly oblong or lance-oblong, scabrous or short-hirsute to glabrous except for the margins; lower leaves soon deciduous, the upper numerous and reduced to spreading bracts; heads several to many, terminating the branches; involucre glandular, 5-8 mm; involucral bracts in several series but not strongly imbricate, firm, the tips long, green, loose or spreading, acute or acuminate; rays 15-40, blue or purple, sometimes rose, 1-1.5 cm.

Notes

Flowers  August to November

Wetland Indicator: NA

This species blooms later in the season than many other asters. The stems and especially the flower heads are densely glandular and aromatic.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.

The New York Botanical Garden. Bronx, NY

 


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Michael Hough 2018