Solidago sempervirens
Solidago guiradonis
seaside goldenrod, verge d'or toujours verte
Guirado goldenrod, Guirado's goldenrod
1–10(–20+), erect or ascending, glabrous throughout or hairy in arrays.
1–10+, ascending-erect, glabrous, sometimes sparsely strigose 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.
sometimes rosettes of smaller leaves present at flowering;
basal and proximal cauline tapering to elongate, winged petioles, bases nearly sheathing stems, blades linear-lanceolate, 50–200 (including petiole) × 4–9 mm, reduced distally, margins entire, apices acute, faces glabrous;
mid and distal cauline sessile, blades linear, 25–100 × 3–7 mm, reduced distally and sometimes scalelike, margins entire.
2–3 mm, glabrous or sparsely hairy.
3–8 mm, glabrous or glabrate;
bracteoles 3–6, grading into phyllaries.
3–7 mm.
campanulate, 2.5–4 mm.
8–17;
laminae 5–6.2 × 0.4–0.6 mm.
8–10;
laminae 1.2–2.5 × ca. 0.75 mm.
10–22;
corollas 3–3.2 mm, lobes 0.5–1.2 mm.
10–21;
corollas 2.8–4 mm, lobes 1 mm.
in 3–4 series, unequal, lanceolate, margins ciliate, apices acute.
in 3–4 series, linear-triangular, outer 1/3–1/2 length of inner, 1–3 × 0.4–0.9 mm, unequal, margins involute apically, midribs usually enlarged and translucent, inner with margins involute, apices sharply acute.
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.
15–190, in racemiform to narrowly paniculiform arrays, rarely slightly secund, 12–45 × 2–11 cm, branches ascending.
(obconic) 1.1–1.5 mm, moderately strigose;
pappi 3.8–4 mm (slightly clavate).
(obconic) 1–1.5 mm (4–7 ribs lighter than body), sparsely to moderately strigose;
pappi 1.5–2 mm.
= 18.
Solidago sempervirens
Solidago guiradonis
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 guiradonis is a rare species found only in the vicinity of San Carlos and San Benito peaks, San Benito and Fresno counties, California. It is similar to S. confinis but has much narrower leaves and smaller cypselae.
(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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