Solidago subsect. Nemorales
Phytologia 75: 8. 1993.
Stems and leaves usually moderately to densely strigoso-canescent. Leaves: basal often present in rosettes at flowering, proximalmost cauline petiolate to subpetiolate, sometimes present at flowering, largest sometimes with two prominent lateral nerves (3-nerved). Heads in variously thyrsiform-paniculiform, open to usually congested, cone-shaped, ± secund (to reflexed in S. nemoralis) arrays, proximal branches arching, secund; phyllaries 1-nerved, not stipitate-glandular, not striate. Pappus bristles usually in 2 series (inner usually weakly to moderately clavate).
North America, Mexico.
Species 6 (5 in the flora).
|1||Heads secund, in rounded, secund, pseudo-corymbiform paniculiform arrays; oftenalkaline meadows and flats, Montana and Idaho s to New Mexico and Arizona||Solidago nana|
|1||Heads usually in narrowly to broadly pyramidal, paniculiform arrays, branches secund||> 2|
|2||Plants with short-branched caudices; arrays secund to apically recurved; prairies and open ground in e deciduous forests||Solidago nemoralis|
|2||Plants creeping-rhizomatous; heads in thyrsiform to secund-pyramidal, paniculiform arrays||> 3|
|3||Leaves finely scabrous, not or weakly 3-nerved; e United States||Solidago radula|
|3||Leaves coarsely scabrous, hispid or soft-canescent, sometimes strongly 3-nerved; prairies and w United States||> 4|
|4||Heads in paniculiform arrays, usually compact, branches broadly thyrsiform to somewhat secund pyramidal, proximal branches reflexed-recurved distally,basal leaves withering by flowering; prairies of Great Plains||Solidago mollis|
|4||Heads in cone-shaped arrays with branches narrowly secund, or open, lax, pyramidal; basal leaves often present at flowering; from near sea to mid montane elevations, Wyoming to s Oregon, s to central Mexico||Solidago velutina|