Solidago petiolaris


Hort. Kew. 3: 216. 1789.

Common names: Downy ragged goldenrod
Synonyms: Aster lindheimeranus (Scheele) Kuntze Aster petiolaris (Aiton) Kuntze Solidago angusta Torrey & A. Gray Solidago harperi Mackenzie ex Small Solidago lindheimeriana Scheele Solidago milleriana Mackenzie ex Small Solidago petiolaris var. angusta (Torrey & A. Gray) A. Gray Solidago petiolaris var. squarrulosa Torrey & A. Gray Solidago petiolaris var. wardii (Britton) Fernald Solidago squarrulosa Solidago wardii
Treatment appears in FNA Volume 20. Treatment on page 118. Mentioned on page 117.

Plants 40–150 cm; caudices stout, sometimes with long slender rhizomes. Stems 1–20(–50+), stout, finely puberulent or scabrous-puberulent at least distally. Leaves: basal absent at flowering; cauline sessile to short-petiolate; blades usually lanceolate-elliptic or ovate, sometimes linear-lanceolate, 30–150 × 5–30 mm, thick and firm, margins entire or few toothed, somewhat to much reduced distally, abaxial faces sometimes resinous and shiny, glabrous or strigillose (hairs mostly 0.1–1.4 mm), adaxial glabrous or scabrous. Heads 10–190+ in paniculiform (rarely racemiform) arrays, usually elongate, usually leafy-bracteate, bracts similar to distal leaves but reduced; branches stiffly ascending, not secund, sometimes elongate. Peduncles mostly 2–15 mm, bracteolate, sparsely to densely short hispid-strigose. Involucres campanulate, 4.5–7.5 mm. Phyllaries in 3–4 series, unequal, linear-lanceolate, acute to attenuate, ± squarrose-tipped, glabrous or moderately strigose, sparsely to moderately stipitate-glandular, sometimes viscid. Ray florets (5–)7–9; laminae 3–7 × 1–2 mm. Disc florets (8–)10–16; corollas 4–5 mm, lobes ca. 1–2 mm. Cypselae 3–4 mm, glabrous or glabrate; pappi ca. 4 mm. 2n = 18, 36, 54.

Phenology: Late Aug–Oct(–Nov).
Habitat: Woods and open places, especially sandy soils
Elevation: 0–1400[–2300] m



Ala., Ark., Fla., Ga., Ill., Kans., La., Mo., Nebr., N.Mex., N.C., Okla., S.C., Tex., Mexico (Coahuila).


Solidago petiolaris is reported from Colorado but that report has not been confirmed. G. L. Nesom (1990j) discussed variation in the species and mapped the distribution. It is variable in leaf and phyllary shape and indument. Although several varieties have often been recognized in floras, the characters used to distinguish them form continua of variation that do not break into distinct groupings. Several general trends are worth noting. Plants in the Ozarks often have very resinous leaves; that does not appear to correlate with phyllary indument traits. Phyllary pubescence varies in a continuous fashion as well, with the numbers and distribution of hairs not breaking into discontinuous ranges. Diploids are known from throughout the range; one report of a tetraploid comes from North Carolina. Two reports of tetraploids from Florida were based on misidentified specimens. Plants with compact short arrays approach S. wrightii in this trait.

Lower Taxa

... more about "Solidago petiolaris"
John C. Semple +  and Rachel E. Cook +
Solidago sect. Thyrsiflorae +
Downy ragged goldenrod +
Ala. +, Ark. +, Fla. +, Ga. +, Ill. +, Kans. +, La. +, Mo. +, Nebr. +, N.Mex. +, N.C. +, Okla. +, S.C. +, Tex. +  and Mexico (Coahuila). +
0–1400[–2300] m +
Woods and open places, especially sandy soils +
Late Aug–Oct(–Nov). +
nesom1990c +
Illustrated +
Aster lindheimeranus +, Aster petiolaris +, Solidago angusta +, Solidago harperi +, Solidago lindheimeriana +, Solidago milleriana +, Solidago petiolaris var. angusta +, Solidago petiolaris var. squarrulosa +, Solidago petiolaris var. wardii +, Solidago squarrulosa +  and Solidago wardii +
Solidago petiolaris +
Solidago subsect. Thyrsiflorae +
species +