Arida (R.L.Hartm.) D.R.Morgan & R.L.Hartm. accepted as Leucosyris Greene (original description)
Arida arizonica (R.C.Jacks. & R.R.Johnson) D.R.Morgan & R.L.Hartm. (original description)
Arida blepharophylla (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Arida carnosa (A.Gray) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera carnosa (A.Gray) G.L.Nesom (original description)
Arida coulteri (A.Gray) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera coulteri (A.Gray) B.L.Turner & D.B.Horne (original description)
Arida crispa (Brandegee) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera crispa (Brandegee) B.L.Turner & D.B.Horne (original description)
Arida mattturneri B.L.Turner & G.L.Nesom (original description)
Arida parviflora (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Arida riparia (Kunth) D.R.Morgan & R.L.Hartm. (original description)
Arida turneri (M.L.Arnold & R.C.Jacks.) D.R.Morgan & R.L.Hartm. (original description)
Baccharis subg. Molina sect. Punctatae Giuliano & G.L.Nesom (original description)
Bellidinae (Cass. ex D.Don) G.L.Nesom accepted as Bellidinae Willk. (original description)
Chaptalia hidalgoensis L.Cabrera & G.L.Nesom (original description)
Dieteria asteroides var. glandulosa (B.L.Turner) D.R.Morgan & R.L.Hartm. (original description)
Dieteria asteroides var. lagunensis (D.D.Keck) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera asteroides var. lagunensis (D.D.Keck) B.L.Turner (original description)
Dieteria bigelovii (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Dieteria bigelovii var. commixta (Greene) D.R.Morgan & R.L.Hartm. (original description)
Dieteria bigelovii var. mucronata (Greene) D.R.Morgan & R.L.Hartm. (original description)
Dieteria canescens subsp. glabra (A.Gray) D.R.Morgan & R.L.Hartm. accepted as Dieteria canescens var. glabra (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Dieteria canescens var. ambigua (B.L.Turner) D.R.Morgan & R.L.Hartm. (original description)
Dieteria canescens var. glabra (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Dieteria canescens var. incana (Lindl.) D.R.Morgan & R.L.Hartm. accepted as Corethrogyne filaginifolia (Hook. & Arn.) Nutt. (original description)
Dieteria canescens var. leucanthemifolia (Greene) D.R.Morgan & R.L.Hartm. (original description)
Dieteria canescens var. nebraskana (B.L.Turner) D.R.Morgan & R.L.Hartm. (original description)
Dieteria canescens var. sessiliflora (Nutt.) D.R.Morgan & R.L.Hartm. (original description)
Dieteria canescens var. shastensis (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Liatris patens Kral & G.L.Nesom (original description)
Liatris savannensis Kral & G.L.Nesom (original description)
Solidago altissima subsp. gilvocanescens (Rydb.) Semple (original description)
Solidago arenicola B.R.Keener & Kral (original description)
Solidago faucibus Wieboldt (original description)
Solidago kralii Semple (original description)
Solidago lepida subsp. fallax (Fernald) (Fernald) (original description)
Solidago lepida var. salebrosa (Piper) Semple (original description)
Solidago odora subsp. chapmanii (A.Gray) Semple (original description)
Solidago patula subsp. strictula (Torr. & A.Gray) Semple (original description)
Solidago puberula subsp. pulverulenta (Nutt.) Semple (original description)
Solidago sempervirens subsp. azorica (Hochst. ex Seub.) Semple (original description)
Solidago sempervirens subsp. mexicana (L.) Semple accepted as Solidago mexicana L. (original description)
Solidago ser. Auriculatae Semple (original description)
Solidago ser. Odorae (Mack.) Semple accepted as Solidago sect. Odorae (Mack.) Semple & J.B. Beck (original description)
Solidago speciosa subsp. pallida (Porter) Semple (original description)
Solidago stricta subsp. gracillima (Torr. & A.Gray) Semple (original description)
Solidago subsect. Argutae (Mack.) G.L.Nesom accepted as Solidago ser. Argutae (Mack.) G.L.Nesom (original description)
Solidago subsect. Humiles (Rydb.) Semple (original description)
Solidago velutina subsp. californica (Nutt.) Semple (original description)
Solidago velutina subsp. sparsiflora (A.Gray) Semple accepted as Solidago velutina DC. (original description)
Xanthisma arenarium (Benth.) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera arenaria (Benth.) Shinners (original description)
Xanthisma blephariphylla (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma blephariphyllum (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma coloradoense (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma crutchfieldii (B.L.Turner) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma glaberrimum (Rydb.) G.L.Nesom & O'Kennon accepted as Xanthisma spinulosum var. glaberrimum D.R.Morgan & R.L.Hartm. (original description)
Xanthisma gracile (Nutt.) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma grindelioides (Nutt.) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma grindelioides var. depressum (Maguire) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma gymnocephalum (DC.) D.R.Morgan & R.L.Hartm. accepted as Xanthisma blephariphyllum (A.Gray) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma gypsophilum (B.L.Turner) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma incisifolia (I.M.Johnst.) G.L.Nesom (original description)
Xanthisma incisifolium (I.M.Johnst.) G.L.Nesom accepted as Machaeranthera incisifolia (I.M.Johnst.) G.L.Nesom (original description)
Xanthisma johnstonii (S.F.Blake) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera johnstonii (S.F.Blake) B.L.Turner (original description)
Xanthisma junceum (Greene) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma restiforme (B.L.Turner) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma rhizomatum (M.C.Johnst.) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma sect. Blepharodon (DC.) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma sect. Havardii (R.C.Jacks.) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma sect. Sideranthus (Nutt. ex Nees) D.R.Morgan & R.L.Hartm. accepted as Xanthisma DC. (original description)
Xanthisma spinulosum (Pursh) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma spinulosum subsp. gooddingii (A.Nelson) D.R.Morgan & R.L.Hartm. accepted as Xanthisma spinulosum var. gooddingii (A.Nelson) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma spinulosum var. chihuahuanum (B.L.Turner & R.L.Hartm.) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma spinulosum var. gooddingii (A.Nelson) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma spinulosum var. incisifolium (I.M.Johnst.) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera incisifolia (I.M.Johnst.) G.L.Nesom (original description)
Xanthisma spinulosum var. paradoxum (B.L.Turner & R.L.Hartm.) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma stenolobum (Greene) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera stenoloba (Greene) Shinners (original description)
Xanthisma viscidum (Wooton & Standl.) D.R.Morgan & R.L.Hartm. (original description)
Xanthisma wigginsii (S.F.Blake) D.R.Morgan & R.L.Hartm. accepted as Machaeranthera wigginsii (S.F.Blake) R.L.Hartm. (original description)
Xylorhiza crutchfieldii (B.L.Turner) D.R.Morgan & R.L.Hartm. (original description)