RIGID GOLDENROD
File Size: 122 KB
 
Solidago rigida  L.
Konza Prairie, Riley County, Kansas
Perennial
Height: 1-5 feet
Family: Asteraceae - Sunflower Family
Flowering Period:   August, September,October
Also Called: Stiff goldenrod.
Stems: Erect, stout, clustered, usually unbranched, leafy, rough-hairy.
Leaves: Alternate, simple, long-stalked below, sessile above, broadly ovate to lanceolate, 2 to 10 inches long, 1 to 4 inches wide, thick, rigid, rough on both surfaces or somewhat glabrous beneath; margins mostly entire; tips pointed; upper leaves reduced.
Inflorescences: Corymb-like, flat-topped to rounded, densely flowered, terminal; heads about 3/8 inch wide; bracts firm, rounded.
Flowers: Ray florets 7-14, about 1/4 inch long, yellow; disk florets 19-31, yellow.
Fruits: Achenes, ribbed, glabrous, tipped with whitish bristles, enclosing small seed.
Habitat: Dry open prairies, pastures, and hillsides, on rocky or sandy sites.
Distribution: East 4/5 of Kansas.
Comments: Rigid goldenrod has deep roots that allow it to compete well with native grasses. It increases in overgrazed pastures.

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