Solidago lepida |
Solidago glomerata |
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Canada goldenrod, Rocky Mountain goldenrod, verge d'or élégante, western Canada goldenrod, western goldenrod |
cluster goldenrod, skunk goldenrod |
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Habit | Plants 25–150 cm; rhizomes short to long creeping, forming few- to many-stemmed clones. | Plants 48–95(–100) cm; caudices branching, woody, rhizomes short, thick. | ||||||||
Stems | 1–25 (–50+), erect, proximally glabrous or sparsely to moderately canescent-villous, distally densely so. |
1–5+, ascending to erect, glabrous or moderately hairy in arrays. |
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Leaves | basal 0; proximal cauline sessile, blades narrowly to broadly oblanceolate, 100–150 × 15–23 mm, tapering to bases, margins subentire to coarsely sharply serrate, 3-nerved, sometimes obscurely so, apices acute to acuminate, abaxial faces glabrate to sparsely short villous, adaxial glabrous; mid to distal cauline sessile, blades lanceolate to narrowly elliptic, (50–)90–120(–150) × (7–) 11–23(–35) mm, largest near mid stem, then somewhat reduced distally in arrays, margins sharply and coarsely to finely serrate or entire, usually becoming less serrate near arrays, faces glabrous or sparsely strigoso-villous, more so along abaxial nerves, distalmost (below arrays) sometimes sparsely to moderately minutely stipitate-glandular. |
rosettes present at flowering, often in large numbers; basal and proximal cauline tapering to long-winged petioles, blades oblanceolate to elongate-elliptic, 140–300 (including petioles) × 33–63 mm, gradually reduced distally, somewhat fleshy-rubbery (fresh), margins serrate (teeth 8–18), apices acuminate, abaxial faces glabrous, adaxial glabrous or sparsely strigose; mid to distal cauline sessile, blades narrowly lanceolate, 35–72 × 9–16 mm, gradually reduced into arrays, tapering to bases, margins entire to slightly serrate, apices acuminate, faces glabrous or sparsely hairy. |
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Peduncles | 1–4 mm, villoso-hirtellous, sometimes minutely stipitate-glandular; bracteoles 0–2, linear-lanceolate, sometimes minutely stipitate-glandular. |
5–12 mm, glabrate to sparsely strigose; bracteoles 0(–1). |
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Involucres | campanulate, (2–)2.3–3.8(–5) mm. |
campanulate, 10–11 mm. |
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Ray florets | (7–)10–16(–22); laminae (0.5–)0.9–1.6(–2.2) × ca. 0.2–0.5 mm. |
6–13; laminae 3.3–5 × (1.5–)2–3(–3.5) mm. |
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Disc florets | (2–)5–9(–13); corollas ca. (2–) 2.5–3.8(–5) mm, lobes (0.4–)0.6–1(–1.4) mm. |
12–29; corollas 3.7–5.1 mm, lobes 1.5–2.3 mm. |
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Phyllaries | in 3–4 series, deltate-lanceolate, unequal (outer 1/4–1/2 length of inner), margins sparsely villoso-ciliate, sometimes minutely stipitate-glandular apically or basally, apices acute to attenuate, glabrous or sparsely to moderately, minutely stipitate-glandular apically, sometimes over much of faces. |
in 3–4 series, unequal, outermost ovate, 2.3–3.6 mm, 1-nerved, apices obtuse to acute, innermost linear-oblong, 1–3-nerved (on at least some involucres), apices obtuse to blunt. |
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Heads | 14–800+, in sometimes secund, broadly thyrsiform or secund pyramidal arrays, usually leafy proximally, branches ascending or sometimes arching-spreading, leaves often minutely stipitate-glandular. |
20–230 (1–10 per branch), in leafy, short, axillary and terminal, racemo-paniculiform clusters 8–41(–47) cm. |
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Cypselae | (narrowly obconic) 0.6–1.2 mm, strigillose; pappi 2.5–3.3 mm. |
(obconic) 2–2.6 mm, glabrous or sparsely strigose; pappi 4.8–5.7 mm. |
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2n | = 108, 126. |
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Solidago lepida |
Solidago glomerata |
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Phenology | Flowering Sep–Oct. | |||||||||
Habitat | In shade to full sun, open spruce woods and thickets, exposed rocky outcrops | |||||||||
Elevation | 1500–2000 m (4900–6600 ft) | |||||||||
Distribution |
AK; AZ; CA; CO; ID; MT; NM; NV; UT; WA; WY; AB; BC; MB; NB; NF; NT; ON; QC; SK; YT
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NC; TN |
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Discussion | Subspecies 2 (2 in the flora). Solidago lepida is the only member of subsect. Triplinerviae that is nearly always minutely, sometimes sparsely, stipitate-glandular in the arrays. These glands can be very small and visible only with 30–70× magnification. The enlarged head of the stalked gland may be little bigger than a pollen grain. The species occurs in the west from the Aleutian Islands and central Alaska south just into northern California, and in the Rocky Mountains to Arizona and New Mexico. Its range extends across Canada to Newfoundland, the Gaspé (Quebec), and northern New Brunswick. It also appears to be introduced at scattered locations across the Canadian prairies. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Solidago glomerata is found only at the highest elevations of the southern Appalachian Mountains. The cytovoucher for a report from South Carolina is for a specimen of S. faucibus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 155. | FNA vol. 20, p. 129. | ||||||||
Parent taxa | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Triplinerviae | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Glomeruliflorae | ||||||||
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Subordinate taxa | ||||||||||
Synonyms | Aster lepidus, S. canadensis var. lepida | |||||||||
Name authority | de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 339. (1836) | Michaux: Fl. Bor.-Amer. 2: 117. (1803) | ||||||||
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