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FNA | Family List | FNA Vol. 20 | Asteraceae | Solidago

19b. Solidago speciosa Nuttall subsp. pallida (Porter) Semple, Sida. 20: 1615. 2003.

Solidago speciosa Nuttall var. pallida Porter, Bull. Torrey Bot. Club 19: 130. 1892; S. pallida (Porter) Rydberg

Plants 30–80 cm. Leaves: pale green, somewhat glaucous, basal usually persistent at flowering, 5–50 mm wide, entire or serrulate (1-5 teeth per side distally); mid cauline 7–28 mm wide, not crowded, not stiff, glabrous. 2n = 18.

Flowering Sep. Prairies and pine forests, sandy soils; 1300–1500+ m; Colo., Nebr., N.Mex., Okla., S.Dak., Wyo.

Subspecies pallida is an eastern woodland-prairie relict (W. A. Weber 1990), occurring in the Black Hills of South Dakota and adjacent Wyoming, the eastern foothills of the Colorado Front Range, and in a few scattered locations southeast to the New Mexico–Oklahoma border area. It is usually much shorter (20–80 cm) than is typical for the species, the array representing about half the height of the shoot. The leaves are much less crowded than those of var. rigidiuscula. A few plants similar in appearance to subsp. pallida, but taller, have been seen in the Carolinas and Tennessee; they belong in var. speciosa.


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