Solidago rugosa
Solidago plumosa
common wrinkle-leaf goldenrod, rough-stem goldenrod, verge d'or rugueuse, wrinkle-leaf goldenrod
plumed goldenrod, plumose goldenrod
1–50+, erect, glabrous or densely hispid to strigose.
glabrous, viscid-resinous.
basal withering by flowering;
proximal cauline usually withering by flowering, sessile, blades elliptic to lanceolate, 68–104 × 20–25 mm, margins sharply serrate, apices acute to attenuate, abaxial faces usually hispido-strigose (at least on main nerves), nerves sometimes prominent, abaxial glabrate;
mid to distal cauline sessile, blades lanceolate, elliptic or ovate, (15–)40–75(–90) × (6–)12–22(–32) mm, largest at midstem, somewhat reduced to much reduced distally, margins coarsely to finely serrate, ciliate, indument similar to proximal or denser.
basal petiolate;
blades tapering to petioles, linear to elliptic-oblanceolate, 100–150 (–220) (including petiole) × 5–10(–15) mm, margins serrate, apices acute to obtuse; the outer much smaller;
mid and distal similar to basal, becoming sessile, mid 40–60 × 2–4 mm, distally reduced (in arrays) to linear bracts 10–35 × 1–2 mm, entire.
1–1.8 mm, sparsely to densely hispido-strigillose;
bracteoles linear- lanceolate to ovate.
2–6 mm, glabrous, sometimes resinous-glandular;
bracteoles linear, 0–5.
narrowly campanulate, (2–)2.5–3.5(–4.5) mm.
campanulate, 4.5–6 mm.
(4–)6–8(–12);
laminae (0.9–)1–1.6(–2.3) × 0.4–0.7 mm.
3–6;
laminae 3.5–5 × 1 mm.
(2–)4–6(–8);
corollas 2–3.5(–4.5) mm, lobes (0.5–)0.7–1(–1.3) mm.
mostly 8–10;
corollas 4.5–5.5 mm, lobes 0.8–1.2 mm.
in 3–4 series, strongly unequal, lanceolate to linear-lanceolate, acute to obtuse.
(in 3–4 series) lanceolate to linear-lanceolate, strongly unequal, apices rounded, glabrous, somewhat resinous.
50–1500, secund, in secund-pyramidal paniculiform arrays 7–36(–50) × 9–26 cm, compact to lax, branches divergent and recurved, longest 0.8–34 cm, leafy-bracteate.
in paniculiform arrays, 15–30 cm, branches ascending, 2–10 cm, not secund in erect stems, secund in arching ones.
(narrowly obconic) 0.9–1.5 mm, moderately strigillose;
pappi 1.8–2.5 mm.
obconic, ca. 2.5 mm, shallowly ribbed, glabrous;
pappi 4–5 mm.
= 18.
Solidago rugosa
Solidago plumosa
Subspecies 2 (2 in the flora).
Solidago rugosa is highly variable in size, array shape, and hairiness. It is similar to members of the S. canadensis complex; it differs in not having 3-nerved leaves. The species is divided into two subspecies and five varieties that can be difficult to distinguish.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Solidago plumosa is known only from a short stretch of the Falls Yadkin River, Stanley County. This species is similar to S. simplex var. racemosa and possibly conspecific with S. simplex. Insufficient material of this taxon has limited study. Known only from the type material since its description, it has been found recently, locally abundant along the Yadkin River at the type locality (A. Weakly, pers. comm.).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaves relatively thin, not very rugose, usually sharply toothed, apices acuminate, glabrous or relatively soft-hairy; ray florets (4–)6–11(–13); northern (subsp. rugosa) | → 2 |
1. Leaves relatively thick and firm, strongly rugose-nerved, usually blunt-toothed to subentire, apices often acute, relatively short and stiff hairy; ray florets 4–9; mostly se United States (subsp. aspera) | → 3 |
2. Stems and leaves hairy; e Canada and ne United States s to Virginia | var. rugosa |
2. Stems and leaves glabrous; coastal cedar bogs and swamps | var. sphagnophila |
3. Arrays narrow, proximal branches not much exceeding subtending leaves; herbage sparsely hairy; mid to higher elevations in mountains | var. cronquistiana |
3. Arrays wide, usually with elongate proximal branches greatly exceeding subtending leaves; herbage moderately to densely hairy; lower elevations in mountains, piedmont, and coastal plain | → 4 |
4. Distal cauline leaves lanceolate to elliptic, not much reduced distally; much of range of subspecies | var. aspera |
4. Distal cauline leaves ovate, much reduced distally; outer coastal plain | var. celtidifolia |
BC
Go Botany
IL Wildflowers
LA Plants
MD Biodiversity
MI Flora
MO Plants
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
