Solidago subsect. Venosae
Phytologia 75: 9. 1993.
Leaves: basal withering by flowering, proximalmost cauline petiolate or sessile, usually withering by flowering, proximal usually largest, not 3-nerved (except S. drummondii), usually with pronounced lateral nerves along entire midnerve. Heads in thyrsiform-paniculiform, open to congested, cone-shaped secund arrays, proximal branches arching, secund, often proximalmost elongate and array repeated distally. Phyllaries not striate, eglandular. Pappi bristles usually in 2, rarely in 3 series (shorter, outer setiform scales rarely present, inner weakly, if at all, clavate, moderately so in S. odora).
Species 7 (7 in the flora).
|1||Stems developing from branched caudices or short rhizomes, elongate rhizomes 0||> 2|
|1||Stems developing from elongate creeping rhizomes||> 4|
|2||Leaves coarsely to finely serrate, not gland-dotted, usually anise-scented whencrushed||Solidago odora|
|2||Leaves entire, minutely translucent gland-dotted, not anise-scented||> 3|
|3||Leaves sparsely hirsute at least on abaxial midribs and main nerves||Solidago ulmifolia|
|3||Leaves glabrous||Solidago delicatula|
|4||Mid cauline leaves sessile, ± clasping, obscurely serrulate or subentire, not rugose||Solidago fistulosa|
|4||Leaves subsessile, not clasping, ± strongly serrate, rugose||> 5|
|5||Involucres mostly 4–6 mm; broader phyllaries 0.7–1.2 mm wide; stems glabrousbelow arrays; mid cauline leaves elliptic||Solidago latissimifolia|
|5||Involucres mostly 2.5–4 mm; phyllaries usually less than 0.5 mm wide; stems hairy below arrays (except var. sphagnophila which is glabrous but otherwise like var. rugosa); mid cauline leaves lanceolate to ovate||Solidago rugosa|