Solidago lepida |
Solidago altissima |
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Canada goldenrod, Rocky Mountain goldenrod, verge d'or élégante, western Canada goldenrod, western goldenrod |
Canada goldenrod, late goldenrod, tall goldenrod, verge d'or haute |
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Habit | Plants 25–150 cm; rhizomes short to long creeping, forming few- to many-stemmed clones. | Plants 50–200 cm; rhizomes short- to long-creeping. | ||||||||||||
Stems | 1–25 (–50+), erect, proximally glabrous or sparsely to moderately canescent-villous, distally densely so. |
1–40+, usually short-hairy throughout, sometimes proximally glabrescent. |
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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. |
basal 0; proximal cauline usually withering by flowering; sessile or subpetiolate, tapering to bases; blades oblanceolate, 95–150 × 16–20 mm, relatively thick and firm, entire to serrate along distal 1/2, strongly 3-nerved, apices acute to acuminate, abaxial faces finely strigose, more so along nerves, adaxial ± scabrous; mid to distal cauline blades oblanceolate (proximally) to lanceolate (distally), mid (30–)45–100(–170) × (5–)7–16(–25) mm, much reduced distally [(15–)25–55 × (3–)4.5–10(–17) mm], margins finely serrate (teeth 0–6(–14) per side on mid), distally usually becoming entire or remotely serrulate, adaxial faces ± scabrous, abaxial moderately strigillose, densely villoso-strigillose along nerves, distal sometimes minutely stipitate-glandular. |
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Peduncles | 1–4 mm, villoso-hirtellous, sometimes minutely stipitate-glandular; bracteoles 0–2, linear-lanceolate, sometimes minutely stipitate-glandular. |
1–3.5 mm, moderately densely short hispiduloso-strigillose, sometimes minutely stipitate-glandular; bracteoles linear, sometimes minutely stipitate-glandular. |
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Involucres | campanulate, (2–)2.3–3.8(–5) mm. |
narrowly campanulate, 2.5–4.5 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. |
(5–)8–13(–17); laminae 0.7–1.5(–2) × 0.1–0.4(–0.5) 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. |
(2–)3–6(–9); corollas usually 2.3–3.6 mm, lobes 0.5–0.9(–1.2) 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 ca. 3 series, strongly unequal; outer lanceolate, acute, inner linear-lanceolate, margins rarely minutely stipitate-glandular, apices acute to obtuse. |
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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. |
(15–)100–1200+, secund, in secund, pyramidal, paniculiform arrays, branches divergent and recurved, sometimes ascending-divergent, sometimes merely club-shaped thyrsiform in small plants, 5–30 × 2–25 cm (often 1.5–2 times as long as wide in southern plants). |
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Cypselae | (narrowly obconic) 0.6–1.2 mm, strigillose; pappi 2.5–3.3 mm. |
(narrowly obconic) 0.5–1.5 mm, sparsely to moderately strigillose; pappi 2.5–3.5 mm. |
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Solidago lepida |
Solidago altissima |
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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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AL; AR; AZ; CA; CO; CT; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; ND; NE; NH; NJ; NM; NY; OH; OK; PA; RI; SC; SD; TN; TX; UT; VA; VT; WV; WY; AB; BC; MB; NB; NS; ON; PE; QC; SK; Mexico [Introduced worldwide]
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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.) |
Subspecies 2 (2 in the flora). (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. 153. | ||||||||||||
Parent taxa | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Triplinerviae | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Triplinerviae | ||||||||||||
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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) | Linnaeus: Sp. Pl. 2: 878. (1753) | ||||||||||||
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