Solidago latissimifolia Mill.

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.

Plants (40–)100–300(–400) cm; rhizomes creeping, elongate. Stems 1–5+, erect, glabrous or branches of arrays puberulent. Leaves: 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. Heads 35–800 , in paniculiform arrays, sometimes leafy-bracteate, with short or elongate, slightly to strongly recurved, secund branches. Peduncles 4–10 mm, sparsely to moderately strigose; bracteoles 1–3+, linear-lanceolate, usually a few near head grading into phyllaries. Involucres campanulate, 4–6 mm. Phyllaries 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. Ray florets 6–10; laminae 2–3 × 0.8–1.3 mm. Disc florets 4–7; corollas 3–4 mm, lobes 0.9–1.3 mm. Cypselae (obconic) 1.5 mm, sparsely strigose; pappi 3.5–5 mm. 2n = 18, 36, 54.

Aster latissimifolius (Miller) Kuntze; A. sublitoralis (Torrey & A. Gray) Kuntze; Solidago edisoniana Mackenzie; S. elliottii Torrey & A. Gray; S. elliottii var. ascendens Fernald; S. elliottii var. divaricata Fernald; S. elliottii var. edisoniana (Mackenzie) Fernald; S. elliottii var. pedicellata Fernald; S. elliptica Aiton; S. mirabilis Small

Solidago latissimifolia, common name Elliott's goldenrod, is North American species of flowering plants in the family Asteraceae. It is native to the Atlantic Coast of the United States and Canada, from Nova Scotia south to Alabama and Florida.

Solidago latissimifolia is a perennial herb up to 400 cm (13 ft) tall, spreading by means of underground rhizomes. Leaves are elliptical, up to 15 cm (6 in) long. One plant can produce as many as 800 small yellow flower heads, in large branching arrays at the tops of the stems. The species grows in marshes (fresh water or brackish water) and thickets on the coastal plain.