Solidago sempervirens
Solidago ouachitensis
seaside goldenrod, verge d'or toujours verte
Ouachita Mountain goldenrod, Ouachita Mountains goldenrod
1–10(–20+), erect or ascending, glabrous throughout or hairy in arrays.
1–3+, erect, straight, glabrous proximally to sparsely hairy 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 withering by flowering;
proximal cauline sessile, blades elliptic, 100–130 × 35–45 mm, margins sharply serrate (with 20–31 teeth), abaxial faces glabrous, adaxial glabrous or sparsely hairy;
distal cauline sessile, blades narrowly elliptic, 65–80 × 13–24 mm, bases cuneate, margins entire to slightly serrate, apices acuminate, faces glabrous.
2–3 mm, glabrous or sparsely hairy.
0.5–3 mm, sparsely hispido-strigose;
bracteoles ovate, 1–3 near each head, grading into phyllaries.
3–7 mm.
narrowly campanulate, (6.5–)7–8 mm.
8–17;
laminae 5–6.2 × 0.4–0.6 mm.
1;
laminae 2.4–4.7 × ca. 1 mm.
10–22;
corollas 3–3.2 mm, lobes 0.5–1.2 mm.
4–5;
corollas 1.8–2.8 mm, lobes 0.8–1.6 mm.
in 3–4 series, unequal, lanceolate, margins ciliate, apices acute.
in ca. 3–4 series, unequal, 1-nerved, obtuse;
outermost linear-oblong, 0.8–1.3 mm.
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.
25–50, in non-secund, short, axillary and terminal racemiform/paniculiform arrays 13–25 cm.
(obconic) 1.1–1.5 mm, moderately strigose;
pappi 3.8–4 mm (slightly clavate).
1.5–2.7 mm, glabrous;
pappi 3–3.5 mm.
= 18.
Solidago sempervirens
Solidago ouachitensis
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.)
Of conservation concern.
Historically Solidago ouachitensis has been included in S. caesia or S. curtisii; it is ecologically and morphologically distinct.
Solidago ouachitensis is known only from the mesic, north-facing slopes of the Ouachita Mountains along the border of Arkansas and Oklahoma. It is a very infrequent species deserving protection and is in the Center for Plant Conservation’s National Collection of Endangered Plants.
(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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