Solidago speciosa
Solidago latissimifolia
noble goldenrod, showy goldenrod
Elliott's goldenrod
1(–5), erect, glabrous proximally to strigillose in arrays.
1–5+, erect, glabrous or branches of arrays puberulent.
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.
basal and proximal cauline withering by flowering;
mid and distal cauline numerous (to 50+ on taller stems), sessile or nearly so (bases of blades sometimes subauriculate and rounded to short petioles), blades elliptic or lanceolate-elliptic, larger 60–150 × 15–35 mm, little reduced distally, margins serrate to entire, not 3-nerved, obscurely to obviously reticulately nerved, faces barely rugose, glabrous.
1.5–3 mm, sparsely to moderately scabroso-strigillose;
bracteoles linear, grading into phyllaries, scattered along peduncles, clustered near heads.
4–10 mm, sparsely to moderately strigose;
bracteoles 1–3+, linear-lanceolate, usually a few near head grading into phyllaries.
narrowly campanulate, 4–6.5 mm.
campanulate, 4–6 mm.
(2–)3–7(–9);
laminae 3–4 × 0.5–1 mm.
6–10;
laminae 2–3 × 0.8–1.3 mm.
6–16;
corollas 2.5–4 mm, lobes 0.5–1.2 mm.
4–7;
corollas 3–4 mm, lobes 0.9–1.3 mm.
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 4–5 series, strongly unequal, margins apically ciliate, obtuse to rounded, glabrous;
outer ovate-lanceolate, inner linear-lanceolate, relatively broad, 0.7–1.2 mm.
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.
35–800, in paniculiform arrays, sometimes leafy-bracteate, with short or elongate, slightly to strongly recurved, secund branches.
(narrowly obconic) 1.6–2.5 mm, glabrous;
pappi 3–4.5 mm.
(obconic) 1.5 mm, sparsely strigose;
pappi 3.5–5 mm.
= 18, 36, 54.
Solidago speciosa
Solidago latissimifolia
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.)
The presence of Solidago latissimifolia in Mississippi has not been confirmed. L. J. Uttal and D. M. Porter (1988) determined that the oldest valid name for this species is Solidago latissimifolia. The common name is based on the long-used S. elliottii (e.g., A. Cronquist 1980; H. A. Gleason and A. Cronquist 1991). Putative S. rugosa × S. sempervirens specimens could be confused with this species, but the hybrids have hairier stems and the petioles of proximalmost leaves ± sheath the stem.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaves pale green, somewhat glaucous; plants 30–80 cm; e Colorado, extreme w Oklahoma, and adjacent New Mexico, disjunct in Black Hills (S. speciosa subsp. pallida) | var. pallida |
1. Leaves usually dark green, not glaucous; plants usually 80–200 cm; e deciduous forest onto e prairies and oak savannas (S. speciosa subsp. speciosa) | → 2 |
2. Basal leaves usually present at flowering, (20–) 28–55 mm wide, often coarsely serrate; mid cauline leaves (10–)20–28 mm wide, not crowded, not stiff, not scabrous; e UnitedStates | var. speciosa |
2. Basal leaves persisting or not to flowering, 8–20 mm wide, often entire or shallowly serrate; mid cauline leaves 4–15(–20) mm wide, often crowded, usually stiff, often somewhat scabrous; w portions of deciduous forest and adjacent prairies, glade habitats further east | var. rigidiuscula |
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