Solidago sempervirens |
Solidago squarrosa |
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seaside goldenrod, verge d'or toujours verte |
squarrose goldenrod, stout goldenrod, verge d'or squarreuse |
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Habit | Plants 40–200 cm; caudices short, stout. | Plants 30–150 cm; caudices branching. | ||||
Stems | 1–10(–20+), erect or ascending, glabrous throughout or hairy in arrays. |
1–5+, erect, glabrous proximal to arrays. |
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Leaves | 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 cauline tapering quickly to long, winged ciliate-margined petioles, blades ovate, 50–200 × 20–100 mm, margins serrate; mid to distal cauline sessile, blades oblanceolate, 30–100 × 8–35 mm, reduced distally and becoming lanceolate-ovate, margins entire, abaxially sparsely strigose along nerves. |
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Peduncles | 2–3 mm, glabrous or sparsely hairy. |
8–10 mm. |
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Involucres | 3–7 mm. |
5–9 mm. |
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Ray florets | 8–17; laminae 5–6.2 × 0.4–0.6 mm. |
10–16; laminae 4–6.5 × 0.4–0.6 mm. |
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Disc florets | 10–22; corollas 3–3.2 mm, lobes 0.5–1.2 mm. |
15–30; corollas 5–5.6 mm, lobes 0.5–1.2 mm. |
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Phyllaries | in 3–4 series, unequal, lanceolate, margins ciliate, apices acute. |
(20–26) in 4–6 series, recurved, unequal, conspicuously spreading, lanceolate, margins ciliate, apices acute to obtuse, finely strigose. |
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Heads | 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. |
20–200, not secund, in narrow, elongate arrays of axillary and terminal racemiform clusters, branches and peduncles hairy, leafy-bracteate proximally. |
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Cypselae | (obconic) 1.1–1.5 mm, moderately strigose; pappi 3.8–4 mm (slightly clavate). |
(obconic) 1.5–2 mm, glabrous; pappi 3–4.3 mm. |
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2n | = 18. |
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Solidago sempervirens |
Solidago squarrosa |
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Phenology | Flowering Aug–Sep. | |||||
Habitat | Dry woods, fields and rocky slopes | |||||
Elevation | 0–1000+ m (0–3300+ ft) | |||||
Distribution |
AL; CT; DE; FL; GA; IL; LA; MA; MD; ME; MI; MS; NC; NH; NJ; NY; OH; PA; RI; SC; TX; VA; NB; NF; NS; ON; PE; QC; Mexico; Central America; West Indies [Introduced inland around Great Lakes, introduced to Atlantic Islands (Azores)]
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CT; DE; IN; KY; MA; ME; NC; NH; NJ; NY; OH; PA; RI; VA; VT; WV; NB; ON; QC
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Discussion | 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.) |
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Key |
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Source | FNA vol. 20, p. 136. | FNA vol. 20, p. 120. | ||||
Parent taxa | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Maritimae | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Squarrosae | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Aster sempervirens | Aster muehlenbergianus, S. squamosa, S. squarrosa var. ramosa | ||||
Name authority | Linnaeus: Sp. Pl. 2: 878. (1753) | Muhlenberg: Cat. Pl. Amer. Sept., 79. (1813) | ||||
Web links |