Solidago speciosa |
Solidago roanensis |
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noble goldenrod, showy goldenrod |
Roan Mountain goldenrod |
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Habit | Plants (30–)50–200 cm; caudices stout, woody. | Plants 20–100 cm; caudices branched, sometimes elongate. | ||||||||
Stems | 1(–5), erect, glabrous proximally to strigillose in arrays. |
usually single, glabrous proximally, hirsuto-puberulent in arrays, sometimes irregularly or decurrently so proximally. |
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Leaves | basal and proximal cauline (sometimes withering by flowering) tapering to winged petioles, blades lanceolate to ovate-elliptic, 50–300 (including petiole) × 12–80 mm (sometimes firm), margins sharply serrate to crenate or entire, faces glabrate to sparsely strigillose; mid to distal cauline sessile, blades narrowly ovate to lanceolate or elliptic, 25–90 × 5–30 mm, gradually reduced distally, margins serrulate to entire (distally), ciliate, faces glabrous or sparsely scabroso-strigose. |
proximalmost withering, smaller; basal and proximal cauline tapering to winged petioles, blades elliptic to elliptic-obovate or subrhombic, mostly 60–150 × 10–50 mm, margins serrate, usually acuminate, glabrous or scabrellous distally; mid and distal cauline sessile, blades mostly rhombic-elliptic to narrowly lanceolate, 20–40 × 5–8 mm. |
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Peduncles | 1.5–3 mm, sparsely to moderately scabroso-strigillose; bracteoles linear, grading into phyllaries, scattered along peduncles, clustered near heads. |
1–4 mm, bracteolate. |
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Involucres | narrowly campanulate, 4–6.5 mm. |
campanulate, 4–6 mm. |
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Ray florets | (2–)3–7(–9); laminae 3–4 × 0.5–1 mm. |
6–9; laminae 2–3 × 1–1.5 mm. |
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Disc florets | 6–16; corollas 2.5–4 mm, lobes 0.5–1.2 mm. |
mostly 8–12; corollas 4–4.5 mm, lobes 1–1.5 mm. |
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Phyllaries | in 3–4 series, appressed, strongly unequal, outer ovate, mid and inner lanceolate, (midnerves often raised and thick) apices acute to obtuse or rounded, glabrous. |
in 3–4 series, appressed, unequal (outer 1/2 length of inner), linear to lanceolate-deltate (inner series usually striate with 2 prominent secondary nerves), apices narrowly acute or minutely obtuse. |
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Heads | 15–300+, not secund, in usually dense, sometimes open, elongate, paniculiform to thyrsiform arrays, (5–)10–45 × (2–)3–7(–12) cm; branches strongly ascending, often racemiform. |
50–250, in elongate, narrowly paniculiform arrays, leafy-bracteate proximally, not secund, proximal branches sometimes elongated and ascending. |
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Cypselae | (narrowly obconic) 1.6–2.5 mm, glabrous; pappi 3–4.5 mm. |
(tan) 1.75–2.5 mm, usually glabrous, sometimes sparsely strigose; pappi 1.5–2.5 mm. |
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2n | = 18. |
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Solidago speciosa |
Solidago roanensis |
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Phenology | Flowering Jul–Sep. | |||||||||
Habitat | Woods and clearings, edges of balds, crevices in rocks, mountain provinces | |||||||||
Elevation | 500–2000 m (1600–6600 ft) | |||||||||
Distribution |
AL; AR; CO; CT; DE; GA; IA; IL; IN; KS; KY; LA; MA; MD; MI; MN; MO; MS; NC; ND; NE; NJ; NM; NY; OH; OK; RI; SC; SD; TN; TX; VA; VT; WI; WV; WY; ON
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AL; GA; MD; NC; SC; TN; VA; WV
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Discussion | Subspecies 2 (2 in the flora). Solidago speciosa occurs scattered throughout its range, often in small populations. Five races have been acknowledged; only three varieties appear to warrant recognition. The species is divided into two nearly allopatric subspecies. The typical subspecies includes two varieties that are sometimes difficult to distinguish and considerably overlap in their ranges. The differences in size and number of leaves and persistence of the proximal cauline leaves may be caused in part by growing conditions. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 123. | FNA vol. 20, p. 122. | ||||||||
Parent taxa | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Squarrosae | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Squarrosae | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Aster speciosus | Aster monticola, S. alleghaniensis, S. curtisii var. monticola, S. maxonii, S. monticola, S. roanensis var. monticola | ||||||||
Name authority | Nuttall: Gen. N. Amer. Pl. 2: 160. (1818) | Porter: Bull. Torrey Bot. Club 19: 130. (1892) | ||||||||
Web links |