Solidago simplex |
Solidago spectabilis |
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alpine goldenrod, dune goldenrod, Mt. Albert goldenrod, Rand's goldenrod, spikelike goldenrod, sticky goldenrod |
basin goldenrod, Nevada goldenrod, showy goldenrod |
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Habit | Plants 5–80 cm; caudices branching. | Plants 40–200 cm; rhizomes creeping, thick. | ||||||||||||||||||||||||||||
Stems | 1–10+, ascending to erect, proximally glabrous, strigose in arrays. |
1–10+, erect, proximally glabrous, glabrous or sparsely villoso-strigose in arrays; often with short fascicles in axils of mid to distal cauline leaves. |
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Leaves | basal and proximal cauline petiolate, blades narrowly oblanceolate, (20–)50–100(–160) × (2–)5–16(–56) mm, margins serrate to crenate, apices acute to obtuse, glabrous; mid and distal sessile, similar, blades lanceolate to linear, 12–45 × 2–19 mm, reduced distally, margins entire to sparsely serrate, sometimes resinous. |
rosettes present at flowering; basal and proximal tapering to winged petioles, blades oblanceolate, 70–210 × 8–28 mm, somewhat fleshy (fresh), margins entire, sometimes shallowly crenate or serrate distally, sometimes undulate, apices acute, mucronate or attenuate, glabrous; mid and distal cauline not crowded, sessile, blades lanceolate to linear-lanceolate, 10–120 × 5–16 mm, reduced distally, margins entire. |
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Peduncles | 3.1–10.3 mm, glabrate to sparsely strigillose; bracteoles few, linear. |
2–8 mm, glabrous or sparsely strigose; bracteoles 0–4. |
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Involucres | campanulate, 3–7 mm. |
narrowly campanulate, 3–4 mm. |
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Ray florets | 7–16; laminae 2–5 × 0.7–0.9 mm. |
(5–)11–15; laminae 1.5–3.5 × 0.5–0.75 mm. |
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Disc florets | 6–31; corollas 4–4.9 mm, lobes 0.6–1.3(–2) mm. |
8–22; corollas 2.5–4.5 mm, lobes 1–1.5 mm. |
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Phyllaries | (in 3–4 series) strongly unequal, often resinous; outer ovate, acute, inner linear-oblong, obtuse. |
in 3–4 series, outer narrowly ovate to lanceolate (1.5–3 × 0.4–1 mm), unequal, obtuse to acuminate. |
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Heads | 3–150, not secund, in narrowly elongate, paniculiform arrays, broadly so in robust plants (12.5–19 × 2.5–3 cm wide), consisting of short axillary and terminal racemiform clusters, proximal branches elongate in larger plants, branches glabrate to strigillose. |
60–100, in thyrsiform-paniculiform arrays, sometimes secund apically, (3.5–)6–26(–60) x 4–10(–15) cm, branches ascending to arching. |
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Cypselae | narrowly obconic, 1.9–3.2 mm, sometimes with dark ridges, strigillose; pappi 1.9–5.2 mm (bristles sometimes clavate). |
(narrowly obconic) 1.5–2.5 mm (ribs 5–8, broad, lighter than body), sparsely strigose; pappi 3–4 mm. |
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2n | = 18. |
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Solidago simplex |
Solidago spectabilis |
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Phenology | Flowering Jul–Oct. | |||||||||||||||||||||||||||||
Habitat | Bogs, seepage areas at higher elevations, streamsides in desert at proximal elevations, tolerant of alkaline meadows and hot springs | |||||||||||||||||||||||||||||
Elevation | 300–2600 m (1000–8500 ft) | |||||||||||||||||||||||||||||
Distribution |
AK; AZ; CO; ID; IN; MA; MD; ME; MI; MN; MT; ND; NH; NM; NY; OR; PA; SD; UT; VT; WA; WI; WV; WY; AB; BC; MB; NB; NT; ON; QC; SK; YT; Mexico
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AZ; CA; ID; NV; OR; UT
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Discussion | Varieties 7 (7 in the flora). The somewhat viscid-resinous heads of Solidago simplex are its most distinctive feature, separating it from similar sympatric species. G. S. Ringius (1985) did a detailed multivariate analysis of the S. spathulata/S. simplex complex (the latter under the name S. glutinosa). The cytogeography of the species complex was presented by Ringius and J. C. Semple (1987). Neither study included data on the next three species occurring in the southeastern United States. The species is divided into two subspecies and seven varieties following G. S Ringius (1985) and J. C. Semple et al. (1999). Three varieties occur in the diploid transcontinental subsp. simplex: var. simplex, var. nana, and var. chlorolepis. Four varieties occur in the eastern North American tetraploid-hexaploid subsp. randii: var. monticola, var. gillmanii, var. ontarioensis, and var. racemosa. Except for var. simplex, varieties are restricted to different habitats in relatively limited ranges. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 113. | FNA vol. 20, p. 142. | ||||||||||||||||||||||||||||
Parent taxa | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Humiles | Asteraceae > tribe Astereae > Solidago > sect. Solidago > subsect. Junceae | ||||||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||||||||||
Synonyms | S. guiradonis var. spectabilis, Aster rothrockii | |||||||||||||||||||||||||||||
Name authority | Kunth: in A. von Humboldt et al., Nov. Gen. Sp. 4(fol.): 81. (1818) | (D. C. Eaton) A. Gray: Proc. Amer. Acad. Arts. 17: 193. (1882) | ||||||||||||||||||||||||||||
Web links |