Author

Stephanie Savoie

Capitula/heads

 Involucres obconic, 4–6 mm. Phyllaries bases pale, usually green-tipped, outer narrowly ovate, inner nearly linear, apices rounded to subacute, slightly resinous. 

Common Name(s)

Mississippi Valley golden top

Disk Flowers

Disc florets 3–6; corollas 3.3–4.4 mm long.

Ecology

Wet spils in swales, woodland openings, fields, floodplains, roadsides, meadows, and praries. 

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Family

Asteraceae (Compositae), Aster family

Fruit

Achenes several-nerved, short-hairy; pappus a single series of capillary bristles.

Leaves

ascending to spreading-ascending; blades 3-5-nerved, lanceolate to narrowly lanceolate, 40–80 × 3–9 mm, lengths 8–18 times widths, abruptly reduced distally, firm, margins scabrous, apices mostly acute, faces glabrous, gland-dotted (9–29 dots per mm²), sometimes pustulate. 

Plant and Stem Features

 Perennial herbs or subshrubs, 30–100 cm; spreading by rhizomes; stems erect, striate-angled, glabrous, not glaucous.

Ray Flowers

Ray florets 7–14

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References

Godfrey, R. K. and J. W. Wooten. 1981. Aquatic and Wetland Plants ofSoutheastern United States, Dicotyledons. University of Georgia Press, Athens.

Haines, A. 2006. Euthamia. In: Flora North American North of Mexico. Edited by Flora North America editorial committee. Vol 20. Oxford University Press, New York and Oxford.

Sieren, D.J.  1970. “A Taxonomic Revision of the Genus Euthamia (Compositae).” Ph.D. Diss., Univ. of Illinois at Urbana-Champaign. 

Synonyms

Solidago leptocephala Torr. & A. Gray