Solidago subsect. Glomeruliflorae
in A. Gray et al., Syn. Fl. N. Amer. 1(2): 145. 1884.
Basal leaves sometimes present in rosettes at flowering, proximalmost cauline petiolate, usually withering by flowering, not 3-nerved. Heads in axillary clusters or in terminal thyrsiform arrays, not nodding or secund. Phyllaries sometimes striate, not stipitate-glandular. Pappus bristles usually in 2 series (inner bristles usually moderately clavate).
e North America (shaded woods and thickets, eastern deciduous forests).
Species 8 (8 in the flora).
|1||Stems and leaf faces densely hairy, leaves spatulate to broadly ovate into arrays (rock houses, Kentucky)||Solidago albopilosa|
|1||Stems and leaf faces glabrous or moderately hairy, distal leaves narrowly lanceolate or narrowly elliptic||> 2|
|2||Involucres 8–13 mm; ray florets 5+ or more||> 3|
|2||Involucres (6.5–)7–8 mm; ray florets 5 or fewer||> 5|
|3||Phyllaries attenuate, subequal, 1-nerved; n Quebec and Labrador to n Ontario, s to Catskill Mountains, New York||Solidago macrophylla|
|3||Phyllaries acute to blunt, unequal, 3–10-nerved (at least inner); high elevation s Appalachian Mountains, North Carolina, Tennessee, Virginia||> 4|
|4||Leaves not fleshy; inner and outer phyllaries 3–10-nerved; flowering late August–early September; mid to high elevations, North Carolina, Tennessee, Virginia||Solidago lancifolia|
|4||Leaves fleshy and rubbery when fresh; inner phyllaries often 3-nerved, outer phyllaries 1-nerved; flowering October; high elevations, North Carolina,Tennessee||Solidago glomerata|
|5||Cypselae glabrous; ray floret 1; Ouachita Mountains, along border of Arkansas andOklahoma||Solidago ouachitensis|
|5||Cypselae sparsely to densely hairy; ray florets (1–)2–5; not restricted to Ouachita Mountains||> 6|
|6||Stems flexuous; proximal mid cauline leaves petiolate, obovate||Solidago flexicaulis|
|6||Stems straight; leaves sessile, lanceolate to elliptic||> 7|
|7||Stems arching, glaucous, strongly anthocyanic; heads secund; proximal to midleaves lanceolate, 50–150 × 8–30 mm||Solidago caesia|
|7||Stems erect, not glaucous, weakly or not anthocyanic; heads not secund; proximal to mid leaves broadly lanceolate to elliptic, 36–180 × 10–60 mm||Solidago curtisii|