Solidago flexicaulis
Solidago patula
broad-leaf goldenrod, verge d'or à tige zigzaguante, zig-zag goldenrod
rough-leaf goldenrod, roundleaf goldenrod, swamp goldenrod
1–5+, flexuous, sparsely to moderately hairy in arrays.
1–3+, erect (angular in cross section, sometimes winged on angles), glabrous or sparsely hairy in arrays.
rosettes present at flowering;
basal and proximal cauline tapering to winged petioles, blades ovate, (70–)100–140(–180) × (27–)40–60(–80) mm (petioles 1/4–1/2 total leaf length), margins serrate-serrulate [teeth (14–)21–33(–45)], abaxial faces glabrous or moderately hairy, more densely so on nerves, adaxial glabrous or sparsely hairy;
mid to distal cauline sessile, blades narrowly ovate to lanceolate, 38–90(–150) × 10–30(–55) mm, reduced distally, becoming lanceolate in arrays, bases tapering, margins entire to serrate, apices acuminate to cuspidate, faces glabrous or sparsely hairy, abaxial glabrous or moderately hairy, more densely so along nerves.
basal and proximal cauline abruptly narrowed to long, winged petioles, blades broadly ovate, 100–300 × 40–100 mm, relatively thick, margins serrate, apices acute, abaxially glabrous, adaxially scabrous;
distal cauline sessile, blades lanceolate, 50–80 × 15–20 mm, gradually reduced distally, subentire.
0.5–5 mm, moderately to densely strigose;
bracteoles 1–3, lanceolate, usually near base of involucres and grading into phyllaries.
1–4 mm, sparsely hispido-strigose, bracteoles 2–5, lanceolate, grading into phyllaries distally.
campanulate, 4.5–7(–8) mm.
3–4.5 mm.
1–5;
laminae (2–)2.5–4(–5) × 0.7–2 mm.
5–12;
laminae 1.5–1.7 × 0.5 mm.
4–8(–11);
corollas 2–3(–4) mm, lobes 1–1.6(–2) mm.
5–15;
corollas 2.8–3 mm, lobes 0.6–1.5 mm.
in ca. 3 series, strongly unequal, outermost 1–2 mm, innermost 3.7–4.7(–5.7) mm, linear-oblong, 1-nerved, apices obtuse to acute.
(10–12) in 3–4 series, ovate to linear-ovate, unequal, obtuse.
25–250, in short axillary and terminal racemiform clusters, lateral panicles (2–)7–31(–56) cm.
25–200, secund, in open, lax, secund, pyramidal, paniculiform arrays, branches ascending to recurved, often elongate with recurved ends.
(obconic) 1–2(–3) mm, moderately to densely strigose;
pappi 3–4.5 mm.
(sometimes mottled) 1.5–2 mm, strigillose;
pappi 2–3 mm.
= 18, 36.
Solidago flexicaulis
Solidago patula
The two cytotypes of Solidago flexicaulis show a strong geographic pattern. Diploids mostly occur east of the Appalachians except in the southwestern portion of the range, while tetraploids occur west of the mountains (J. G. Chmielewski and J. C. Semple 1985). The report of 2n = 90 for the species (Semple et al. 1993) was based on a specimen of the recently described Solidago faucibus. The significance of ploidy level on cypselae traits was analyzed in detail by Chmielewski et al. (1989).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 2 (2 in the flora).
Solidago patula is readily recognized by the angled stem and the sharkskin-like texture of the adaxial surface of the leaves.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Plants relatively robust, proximal leaves large, 80–300 × 40–100 mm, sharply serrate; distal leaves relatively few, gradually reduced distally, serrate; n and s in mountains, to Alabama, Mississippi,Georgia | subsp. patula |
1. Plants more slender and small-leaved, proximal leaves narrower, 50–60 mm wide; distal leaves numerous, much reduced to bracts in array, usually finely serrate to entire; mostly coastal plain and adjacent piedmont | subsp. strictula |
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