Solidago sempervirens
Solidago sciaphila
seaside goldenrod, verge d'or toujours verte
shadowy goldenrod
1–10(–20+), erect or ascending, glabrous throughout or hairy in arrays.
single (sometimes purplish brown, ridged), glabrous, strigose distally in arrays.
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 and proximal tapering to winged petioles, blades (basal) spatulate, 20–40 mm, (proximal) obovate to oblanceolate or elliptic, 60–150(–200) × 30–55 mm, margins serrate (teeth shallow to 5 mm), ciliate, acute to obtuse, acuminate or mucronate, faces abaxially glabrate to sparsely strigose, especially on nerves, adaxially glabrous;
mid and distal cauline sessile, lancelate or oblanceolate to elliptic, 30–100 × 20–40 mm, reduced distally, margins serrate to entire distally.
2–3 mm, glabrous or sparsely hairy.
1–3 mm, strigose;
bracts and bracteoles lanceolate to ovate, grading into phyllaries.
3–7 mm.
campanulate, ca. 5 mm.
8–17;
laminae 5–6.2 × 0.4–0.6 mm.
ca. 6–10;
laminae 1.5–2.5 × 0.5 mm.
10–22;
corollas 3–3.2 mm, lobes 0.5–1.2 mm.
ca. 10;
corollas 3.5–5 mm, lobes 1–1.5 mm.
in 3–4 series, unequal, lanceolate, margins ciliate, apices acute.
in 3–4 series, appressed, strongly unequal, outer grading from ovate bracteoles, mid oblong, rounded, inner linear-oblong, acute, glabrous.
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.
20–180+ (1–6 per branch), in leafy wand-paniculiform arrays (2–)10–20(–40) cm, lateral branches usually not exceeding subtending leaf bracts.
(obconic) 1.1–1.5 mm, moderately strigose;
pappi 3.8–4 mm (slightly clavate).
(narrowly obconic) 2.5–3 mm, moderately strigillose;
pappi ca. 4 mm (sometimes weakly clavate).
= 36.
Solidago sempervirens
Solidago sciaphila
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.)
Solidago sciaphila is similar to S. speciosa, but the proximal leaves are obviously serrate.
(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 |
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