This is a major change from previous versions of this page and is based on Semple and Beck (2021) which begins with the following statement: "A phylogenomic study of the genus Solidago based on 893 nuclear genes (Semple et al. submitted) indicates that numerous changes to the infrageneric nomenclature are needed. The following revised nomenclature for the genus is structured around a phylogeny of 87 diploid Solidago species noted with an asterisk. The positions of 51 polyploid species or those not otherwise included in the phylogeny are based on morphology."
Individual treatments of species on this website will be updated to reflect the results of the DNA study. This will take time; patience is requested.
Solidago
Solidago subg. Solidago
Solidago sect. Solidago
Solidago ser. Solidago
- *Solidago virgaurea (type species of genus)
- *Solidago litoralis
- *Solidago dahurica
- Solidago pacifica
- *Solidago decurrens
- var. decurrens
- var. insularis
- var. praeflorens
- Solidago minutissima
- Solidago horieana
- *Solidago yokusaiana
- Solidago yambaruensis
- *Solidago kurilensis (syn: S. mirabilis Kitam., S. nipponica Semple)
Solidago ser. Macrophyllae
Solidago sect. Villosicarpae
Solidago sect. Erectae
Solidago subsect. Erectae
Solidago ser. Erectae
- *Solidago erecta
- *Solidago speciosa
- *Solidago kralii
- *Solidago plumosa
- Solidago ayuhwasi
- Solidago arenicola
- Solidago austrocaroliniana
- *Solidago rigidiuscula
- *Solidago pallida
- *Solidago jejunifolia
Solidago ser. Albigulae
- *Solidago bicolor
- *Solidago hispida
- Solidago psammophila
- Solidago georgiana
- Solidago porteri
- Solidago sciaphila
Solidago ser. Puberulae
Solidago subsect. Humiles
Western North American taxa
Eastern North American taxa
Solidago sect. Squarrosae
Solidago sect. Brintonia
- *Solidago discoidea (previously treated as Brintonia discoidea)
Solidago sect. Thyrsiflorae
- *Solidago wrightii
- Solidago spellenbergii
- *Solidago correllii
- Solidago orientalis
- Solidago buckleyi
- *Solidago petiolaris
- Solidago capulinensis
Solidago subg. Pleiactila
Solidago sect. Ptarmicoidei
(Oligoneuron Group)
- *Solidago ptarmicoides
- *Solidago rigida
- *Solidago nitida
- *Solidago ohioensis
- *Solidago riddellii
- Solidago houghtonii
Solidago sect. Glomeruliflorae
- *Solidago caesia
- *Solidago zedia
- *Solidago curtisii
- *Solidago flaccidifolia
- Solidago glomerata
- Solidago lancifolia
- *Solidago flexicaulis
- Solidago albopilosa
- *Solidago ouachitensis
Solidago sect. Multiradiatae
Solidago sect. Maritimae
S. sempervirens complex
- *Solidago sempervirens
- *Solidago azorica
- *Solidago mexicana
- Solidago maya
- Solidago paniculata
- *Solidago chrysopsis
S. stricta complex
- Solidago virgata (S. stricta sensu Gray 1882)
- Solidago stricta (synonym: S. perlonga)
- *Solidago austrina
- Solidago pulchra
S. uliginosa complex
- *Solidago uliginosa
- var. uliginosa
- var. peracuta
- var. terrae-novae
- *Solidago simulans
basal complex
Solidago sect. Argutae
Solidago subsect. Argutae
- *Solidago arguta (var. arguta)
- *Solidago vaseyi (synonym: S. arguta var. caroliniana)
- Solidago harrisii
- *Solidago boottii
- *Solidago ludoviciana
- Solidago faucibus
- Solidago tarda
- Solidago verna
Solidago subsect. Patulae
Solidago subsect. Brachychaeta
Solidago sect. Venosae
Solidago subsect. Venosae
Solidago subsect. Ulmifoliae
Solidago ser. Ulmifoliae
Solidago ser. Auriculatae
Solidago subsect. Drummondiani
Solidago sect. Unilaterales
Solidago subsect. Triplinervae
Solidago ser. Canadensae
- *Solidago canadensis
- Solidago rupestris
- *Solidago bartramiana (syn. S. brendae)
- *Solidago fallax (northeastern)
- *Solidago lepida
- var. lepida ( northern and western)
- *var. salebrosa (western)
- Solidago turneri
- *Solidago elongata
- *Solidago altissima
- Solidago shortii
Solidago ser. Tortifoliae
- *Solidago tortifolia
- Solidago leavenworthii
- *Solidago juliae
- Solidago pringlei
- Solidago durangensis
- Solidago macvaughii
- Solidago gypsophila
- Solidago veracruzensis
Solidago subsect. Junceae
Solidago ser. Junceae
- *Solidago juncea
- *Solidago pinetorum
- *Solidago missouriensis
- var. missouriensis
- var. fasciculata
- var. extraria
- var. tenuissima
- var. tolmieana
Solidago ser. Spectabiles
Solidago subsect. Radulae
- *Solidago velutina (including S. sparsiflora)
- Solidago californica
- *Solidago altiplanities
- *Solidago radula
- Solidago mollis
- Solidago hintoniorum
- *Solidago gattingerii
Solidago subsect. Serotinae
North American taxa
Chilensis Complex (South American)
- *Solidago chilensis (including S. linearifolia, S. patagonica)
- *Solidago microglossa (S. chilensis var. megapotamica)
Solidago subg. Nemorales
(Nemoralis Group)
- *Solidago nemoralis
- Solidago decemflora ( synonym: S. nemoralis subsp. decemflora)
- *Solidago nana
Solidago subg. Triactis
Solidago sect. Odorae
- *Solidago odora
- *Solidago chapmanii
- Solidago sp. nov.
Solidago sect. Suffrutescentes
Chrysoma
Semple, John C. and James B. Beck. 2021. A revised infrageneric classification of Solidago (Asteraceae: Astereae). Phytoneuron 2021-10. 1-6.
Last updated 22 August 2023 by J.C. Semple
© 2023 J.C. Semple, including all photographs unless otherwise indicated.
Range maps are based on specimens seen and literature reports and are "works in progress". Data to improve the maps are welcomed.