Solidago sempervirens
Solidago curtisii
seaside goldenrod, verge d'or toujours verte
Curtis' goldenrod, mountain decumbent goldenrod
1–10(–20+), erect or ascending, glabrous throughout or hairy in arrays.
1–4, erect, straight, glabrous or moderately hirtello-strigose.
rosettes present at flowering;
basal and proximal cauline tapering to long, winged petioles sheathing stems or nearly so, blades narrowly ovate to oblanceolate, 100–400 × 10–60 mm, thick or fleshy, entire, acute, glabrous;
mid to distal cauline usually numerous, sessile, blades lanceolate, 40–60 × 5–10 mm, reduced distally, thick or fleshy, bases sometimes subclasping, margins entire.
basal withering by flowering;
proximal to mid cauline weakly petiolate or sessile, blades lanceolate to elliptic, (36–)95–150(–180) × (10–)19–43(–60) mm, margins serrate (with (3–)8–20(–36) teeth), faces glabrous or sparsely hairy, more so along nerves;
distal cauline sessile, blades narrowly lanceolate to narrowly elliptic, (5–)37–90(–130) × (3.5)5–18(–34) mm, margins entire to sparsely serrate (0–9(–14) teeth), faces glabrous or sparsely hairy, sometimes more pilose along nerves.
2–3 mm, glabrous or sparsely hairy.
2–6 mm, moderately to densely finely strigose;
bracteoles 0–3, linear-oblong.
3–7 mm.
narrowly campanulate, (5–)5.6–7(–8) mm.
8–17;
laminae 5–6.2 × 0.4–0.6 mm.
2–4(–6);
laminae (2–)2.5–4(–4.6) × 1–2 mm.
10–22;
corollas 3–3.2 mm, lobes 0.5–1.2 mm.
3–7(–9);
corollas mostly 2–3 mm, lobes 1–1.7(–2.4) mm.
in 3–4 series, unequal, lanceolate, margins ciliate, apices acute.
in 3–4 series, strongly unequal, outermost 1–1.4(–2) mm, innermost (2.5–)3–4(–4.4) mm, obtuse to acute, 1-nerved.
20–500, secund, in paniculiform arrays, secund-pyramidal to broadly club-shaped, sometimes leafy proximally, at least proximal branches spreading-recurved, branches and peduncles bracteolate, bracteoles reduced distally.
20–800 in short axillary and terminal racemiform/paniculiform, non-secund arrays (2–)8.5–38.5(–65) cm.
(obconic) 1.1–1.5 mm, moderately strigose;
pappi 3.8–4 mm (slightly clavate).
1–2(–3) mm, sparsely to moderately strigose;
pappi (2–)2.7–3.6(–4.5) mm.
Solidago sempervirens
Solidago curtisii
Subspecies 2 (2 in the flora).
Solidago sempervirens is common along the seacoast from the Gulf of St. Lawrence to central America and the northern West Indies. Introduced populations are sometimes very large near the Detroit River and Lake Erie in southwestern Ontario, eastern Michigan, and adjacent Ohio. A second disjunct group of populations occurs in Illinois and Indiana in the Chicago area at the southern end of Lake Michigan. Two mostly geographically separate subspecies can be recognized in the flora range. A race also occurs in the Azores and is undoubtedly introduced there [Solidago sempervirens var. azorica (Hochstetter ex Seubert) H. St. John]. Plants cultivated in European gardens have been labeled S. sempervirens var. viminea (Aiton) A. Gray.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 2 (2 in the flora).
Solidago curtisii is similar to S. caesia and may be confused with robust, pressed and dried specimens of the latter if they are mounted such that the arching habit cannot be observed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Involucres 4–7 mm, rays 12–17, disc florets ca. 17–22; Newfoundland to New Jersey, locally to Virginia | subsp. sempervirens |
1. Involucres 3–4 mm, rays 7–11, disc florets ca. 10–16; Massachusetts to Texas and southward | subsp. mexicana |
1. Proximal midcauline leaf blades broadly lanceolateand sparsely hairy | var. curtisii |
1. Proximal midcauline leaf blades elliptic and moderately hairy 22b. Solidago curtisii var. flaccidifolia | → 1 |
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