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 894 nuclear sites (Semple et al. 2023) 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 have been updated to reflect the results of the DNA study.Ìý
Solidago
Solidago subg. Solidago
Solidago sect. Solidago
Ìý ÌýSolidago 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)
ÌýÌý Solidago ser. Macrophyllae
Ìý Solidago sect. Villosicarpae
Ìý Solidago sect. Erectae
ÌýÌý Solidago subsect. Erectae
ÌýÌý Solidago ser. Erectae
- *Solidago erecta
- *Solidago speciosa
- *Solidago kralii
- *Solidago plumosa
- Solidago ayuhwasi
- Solidago arenicola
- Solidago austrocaroliniana
- *Solidago rigidiuscula
- *Solidago pallida
- *Solidago jejunifolia
ÌýÌý Solidago ser. Albigulae
- *Solidago bicolor
- *Solidago hispida
- Solidago psammophila
- Solidago georgiana
- ​Solidago porteri
- Solidago sciaphila
ÌýÌý Solidago ser. Puberulae
Ìý Solidago subsect. Humiles
Ìý Western North American taxa
ÌýÌý Eastern North American taxa
Solidago sect. Squarrosae
Solidago sect. Brintonia
- *Solidago discoidea (previously treated as Brintonia discoidea)
Solidago sect. ThyrsifloraeÌý
- ​*Solidago wrightii
- Solidago spellenbergii
- *Solidago correllii​
- Solidago orientalis
- Solidago buckleyi
- *Solidago petiolaris
- Solidago capulinensis
Solidago subg. Pleiactila
Solidago sect. Ptarmicoidei
Ìý (Oligoneuron Group)
- *Solidago ptarmicoides
- ​*Solidago rigida
- *Solidago nitida
- *Solidago ohioensis
- *Solidago riddellii
- Solidago houghtonii
ÌýSolidago sect. GlomerulifloraeÌý
- *Solidago caesia
- *Solidago zedia
- ​*Solidago curtisii
- *Solidago flaccidifolia
- Solidago glomerata
- Solidago lancifolia
- *Solidago flexicaulis
- Solidago albopilosa
- *Solidago ouachitensis
Solidago sect. Multiradiatae
Solidago sect. Maritimae
ÌýÌý S. sempervirens complex
- *Solidago sempervirens
- *Solidago azorica
- *Solidago mexicana
- Solidago maya
- Solidago paniculata
- *Solidago chrysopsis
ÌýÌý S. stricta complex
- Solidago virgata (S. stricta sensu Gray 1882)
- Solidago stricta (synonym: S. perlonga)
- *Solidago austrina
- Solidago pulchra
ÌýÌý S. uliginosa complex
- *Solidago uliginosa
- var. uliginosa
- var. peracuta
- var. terrae-novae
- *Solidago simulans
ÌýÌý basal complex
Solidago sect. ArgutaeÌý
Ìý Solidago subsect. ArgutaeÌý
- *Solidago argutaÌý (±¹²¹°ù.Ìýarguta)
- *Solidago vaseyi (synonym: S. arguta ±¹²¹°ù.Ìýcaroliniana)
- ​Solidago harrisii
- *Solidago boottii
- *Solidago ludoviciana
- Solidago faucibus
- Solidago tarda
- Solidago verna
ÌýSolidago subsect. Patulae
Solidago subsect. Brachychaeta
Solidago sect. Venosae
Ìý Solidago subsect. Venosae
Ìý Solidago subsect. Ulmifoliae
Ìý Ìý Solidago ser. Ulmifoliae
ÌýÌýÌý Solidago ser. Auriculatae
Ìý Solidago subsect. Drummondiani
Solidago sect. Unilaterales
ÌýSolidago subsect. Triplinervae
ÌýÌý Solidago ser. Canadensae
- *Solidago canadensis
- ​Solidago rupestris
- *Solidago bartramiana (syn. S. brendae)
- ​*Solidago fallaxÌý(northeastern)
- *Solidago lepida
- ​±¹²¹°ù.Ìýlepida ( northern and western)
- *±¹²¹°ù.Ìýsalebrosa (western)
- Solidago turneri
- ​*Solidago elongata
- *Solidago altissima
- Solidago shortii
ÌýÌý Solidago ser. Tortifoliae
- *Solidago tortifolia
- Solidago leavenworthii
- Ìý*Solidago juliae
- Solidago pringlei
- Solidago durangensis
- Solidago macvaughii
- Solidago gypsophila
- Solidago veracruzensis
Ìý Solidago subsect. Junceae
ÌýÌýÌý Solidago ser. Junceae
- *Solidago juncea
- *Solidago pinetorum
- *Solidago missouriensis
- var. missouriensis
- var. fasciculata
- var. extraria
- var. tenuissima
- var. tolmieana
ÌýÌý Solidago ser. Spectabiles
ÌýSolidago 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
- *Solidago gigantea
- *var. gigantea
- var. shinnersii
ÌýÌý ChilensisÌýComplexÌý(South American)
- *Solidago chilensisÌý(includingÌýS. linearifolia,ÌýS. patagonica)
- *Solidago microglossaÌý(S. chilensis ±¹²¹°ù.Ìýmegapotamica)
SolidagoÌýsubg. Nemorales
(Nemoralis Group)
- *Solidago nemoralis
- Solidago decemflora ( synonym: S. nemoralis subsp. decemflora)
- *​Solidago nana
Solidago subg. Triactis
Ìý 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. SempleÌýÌýÌýÌýÌý
© 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".Ìý Data to improve the maps are welcomed.