Solidago buckleyi
Solidago delicatula
Buckley's goldenrod
smooth elm-leaf goldenrod
1–5+, sparsely to moderately short strigose or villous.
1–10+, essentially glabrous.
basal withering by flowering, petiolate, smaller to much smaller than cauline, blades oblanceolate, margins serrate;
cauline sessile, blades elliptic-lanceolate or -oblanceolate, mid 80–140 × 2.5–4 mm, distally reduced, usually membranous, bases tapering, attenuate, margins sharply toothed along much of length to nearly entire, ciliate, abaxial faces short-pilose along small and large nerves, adaxial short-pilose along larger nerves.
basal and proximal cauline tapering to short petioles, blades oblanceolate, 50–70 × 10–20 mm, margins serrate, scabroso-strigose, apices acute to acuminate, faces glabrous;
mid and distal cauline subpetiolate or sessile, blades elliptic-lanceolate, 30–70 × 7–15 mm, gradually reduced distally, tapering to bases, margins serrate, scabroso-strigose;
branch leaves similar, reduced to bracts distally.
1–6 mm, moderately canescent;
bracteoles linear to lanceolate.
2–5 mm, bracteolate, glabrous;
bracteoles grading into phyllaries.
campanulate, 4.5–5.5 mm.
narrowly campanulate, 3–5 mm.
6–8;
laminae 3–4 × 1–1.5 mm wide.
1–4;
laminae 1–2 × 0.5–0.8 mm.
8–14;
corollas 4–5 mm, lobes ca. 1.5 mm.
4–6;
corollas 2.5 mm, lobes 1 mm.
in ca. 3 series, strongly unequal, erect to slightly squarrose-tipped, lanceolate, apices acute, glabrate, sparsely to moderately, finely stipitate-glandular.
in 3–4 series, linear-lanceolate, strongly unequal, acute to ± attenuate, glabrous.
5–160 (2–10+ more per short branch cluster), in narrowly elongate paniculiform arrays, branches usually 1–6 cm (much longer in damaged plants, sometimes 1–3 proximal branches much elongated in undamaged plants), ascending and bearing short terminal racemiform or paniculiform clusters.
160–480 in paniculiform arrays, with a strongly secund, primary, arching axis and nearly always 4–5(–8) leafy, elongate, arching, secund, proximal branches.
(reddish brown) 2–3 mm, glabrous;
pappi 4–5 mm.
1.5–2 mm (6–9 ribs), sparsely strigose, more so apically;
pappi 1.5–2 mm.
= 18.
Solidago buckleyi
Solidago delicatula
Solidago buckleyi is an uncommon species of mesic woods, most variable in the size and number of teeth on the large mid cauline leaves. Once seen, usually it is not easily confused with S. petiolaris. Reports from farther east are for plants of S. petiolaris.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Solidago delicatula is similar to S. ulmifolia, but is essentially glabrous (except for leaf margins) with smaller, more numerous, less conspicuously veiny leaves. It is sufficiently distinct from S. ulmifolia that inclusion in that species as var. microphylla does not appear warranted. Reports from Alabama, western Florida, Louisiana, and Mississippi are likely just smaller-leaved S. ulmifolia. Solidago helleri Small may be a hybrid between S. delicatula and S. ulmifolia.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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