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Published In: Species Plantarum. Editio quarta 3(3): 2060. 1803. (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 8/11/2017)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Native

 

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23. Solidago ulmifolia Muhl. ex Willd. (elm-leaved goldenrod)

Pl. 240 c, d; Map 1012

Plants with the rootstock short and often branched, not producing rhizomes. Stems solitary or more commonly few to several, 40–120 cm long, erect to loosely ascending, with several fine, longitudinal ridges or grooves, glabrous below the inflorescence or moderately pubescent with mostly spreading hairs 0.5–1.5 mm long, not shiny, not glaucous. Leaves basally disposed or the largest leaves about 1/3 of the way up the stem, absent or persistent at flowering (additional rosettes usually absent). Basal and lowermost stem leaves with the blade 6–12 cm long, 2–5 cm wide, mostly 2–6 times as long as wide, elliptic to obovate or narrowly obovate, relatively thin, tapered relatively abruptly to a short to long, winged petiole at the base, angled or tapered to a sharply pointed tip, the margins sharply toothed and inconspicuously hairy, the surfaces sparsely to moderately pubescent with spreading or curved hairs, the upper surface often somewhat roughened to the touch, the undersurface with 1 main vein, the fine, pinnate secondary veins usually easily observed (these usually forming an irregular network). Median and upper stem leaves 1–6 cm long, elliptic to narrowly lanceolate, the margins toothed or those of the uppermost leaves entire, otherwise similar to the lower stem leaves. Inflorescences open, more or less pyramidal panicles, the branches usually arched or nodding, the lowermost branches often relatively long, the heads oriented upward along the branches. Involucre 2.5–4.0 mm long, the bracts in 3 or 4 unequal series. Involucral bracts oblong-ovate to narrowly oblong-lanceolate and bluntly to sharply pointed at the appressed-ascending tip, the thin, white to yellowish white margins hairy (at least toward the tip), the outer surface glabrous, with an elliptic or narrowly diamond-shaped, green to light green central region above the midpoint, this tapered gradually to the midvein, the midvein often slightly thickened and no additional veins present. Receptacle naked. Ray florets 3–5, the corollas 1.5–2.0 mm long, yellow. Disc florets 4–7, the corollas 2.5–3.0 mm long, the lobes 0.5–0.9 mm long, yellow. Pappus 2.0–2.5 mm long, a few of the bristles often slightly thickened toward the tip. Fruits 1.0–1.6 mm long, narrowly obovoid, finely hairy. 2n=18. August–November.

Scattered nearly throughout the state (eastern U.S. west to Wisconsin and Texas; Canada). Mesic to dry upland forests, ledges and tops of bluffs, glades, savannas, margins of ponds and sinkhole ponds, acid seeps, and banks of streams and rivers; also pastures, old fields, dry ditches, and roadsides.

This species usually produces relatively open inflorescences with the lower branches relatively widely spaced, long, and noticeably arching. Although present in a number of habitats, it is a characteristic species of dry bluffs. Most botanists have accepted two varieties, differing in pubescence pattern.

 

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1 Stems moderately pubescent with mostly spreading hairs 0.5–1.5 mm long ... 23A. VAR. PALMERI Solidago ulmifolia var. palmeri
+ Stems glabrous below the inflorescence (often with spreading hairs along the inflorescence main axis and branches) ... 23B. VAR. ULMIFOLIA Solidago ulmifolia Muhl. ex Willd. var. ulmifolia
 


 

 
 
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