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Published In: A Flora of North America: containing . . . 2(2): 217. 1842. (Fl. N. Amer.) 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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6. Solidago drummondii Torr. & A. Gray (Ozark goldenrod)

Pl. 241 k–m; Map 995

Plants with the rootstock short and often branched, sometimes also producing stout rhizomes. Stems few to more commonly several, 30–100 cm long, erect to loosely ascending, with several fine, longitudinal ridges or grooves, moderately to densely pubescent with short, mostly spreading hairs 0.1–0.4 mm long (sometimes less densely hairy toward the stem base), not shiny, not glaucous. Leaves chiefly cauline, the largest leaves about 1/3 of the way up the stem, the basal and lower stem leaves withered or absent at flowering (additional rosettes usually absent). Basal and lowermost stem leaves with the blade 3–8 cm long, 2–7 cm wide, mostly 1–2 times as long as wide, elliptic-ovate to broadly obovate, relatively thick and stiff, tapered relatively abruptly to a short petiole at the base, angled or tapered to a sharply pointed tip, the margins sharply toothed and inconspicuously hairy, the surfaces moderately to densely pubescent with spreading or curved hairs, the upper surface sometimes only sparsely roughened, the undersurface more or less with 3 main veins, but additional pinnate secondary veins usually also well developed and easily observed (the veinlets usually forming an irregular network). Median and upper stem leaves 1–7 cm long, broadly ovate to elliptic, sometimes lanceolate-elliptic toward the tip, 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 (or occasionally apparently all nodding). Involucre 3.0–4.5 mm long, the bracts in 3 or 4 unequal series. Involucral bracts oblong-ovate to narrowly oblong-lanceolate and rounded to bluntly pointed at the appressed-ascending tip (those of the outer series sometimes sharply pointed), 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 mostly above the midpoint, this tapered gradually to the midvein, the midvein often slightly thickened and keeled and no additional veins present. Receptacle naked. Ray florets 3–7, the corollas 2–3 mm long, yellow. Disc florets 4–7, the corollas 3.0–3.5 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 1.5–2.0 mm long, narrowly obovoid, finely hairy. 2n=18. August–December.

Scattered mostly in the eastern half of the state (Missouri, Arkansas, and Illinois). Ledges and tops of calcareous bluffs and rarely banks of rivers.

This species might be confused with S. ulmifolia, but it is easily differentiated by the key characters. Inexplicably, Kartesz and Meacham (1999) listed it as a synonym of S. rugosa ssp. aspera (Aiton) Cronquist, even though this was not Cronquist’s (1947a) intent, and no other authors have suggested that these two names should refer to the same taxon.

 


 

 
 
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