Syn.: Rosa blanda var. arkansana Best, Rosa lunellii Greene, Rosa rydbergii Greene, Rosa virginiana var. arkansana MacMillan
Family: Rosaceae Juss.

Syn.: Phoenicophorium melanochaetes H. Wendl., Verschaffeltia melanochaetes H. Wendl.
Family: Arecaceae Bercht. et J. Presl

Syn.: Galium peregrinum (L.) Franch., Rubia lucida L., Rubia reiseri Halácsy ex Hayek
Family: Rubiaceae Juss.

Syn.: Rubus carpinifolius Rydb., Rubus continentalis (Focke) L. H. Bailey, Rubus hispidus Marshall, Rubus mississippianus L. H. Bailey, Rubus nitidus Raf., Rubus okeechobeus L. H. Bailey, Rubus rubrisetus Rydb., Rubus sanguinolentus Link, Rubus tallahasseanus L. H. Bailey, Rubus trivialis var. serosus L. H. Bailey, Rubus procumbens Muhl. ex W. P. C. Barton
Family: Rosaceae Juss.

Family: Polygonaceae Juss.

Syn.: Aspidium capense Willd., Aspidium capense Sw., Aspidium coriaceum Willd., Aspidium coriaceum (Sw.) Sw., Dryopteris adiantiformis Kuntze, Hypopeltis coriacea (Sw.) Bory, Lastrea adiantiformis (G. Forst.) Vareschi, Nephrodium duriusculum C. Presl, Polypodium adiantiforme G. Forst., Polypodium coriaceum Sw., Polypodium politum Poir., Polystichum adiantiforme (G. Forst.) J. Sm., Polystichum capense J. Sm., Polystichum coriaceum Schott, Rumohra aspidoides Raddi, Tectaria coriacea (Sw.) Link
Family: Dryopteridaceae Ching

Syn.: Brahea minima (Nutt.) H. Wendl., Chamaerops acaulis Michx., Chamaerops arundinacea (Aiton) Sm., Chamaerops glabra Mill., Chamaerops louisiana Darby, Chamaerops sabaloides Baldwin ex Darl., Corypha minor Jacq., Corypha pumila Walter, Rhapis acaulis (Michx.) Walter ex Willd., Rhapis arundinacea Aiton, Sabal adiantina Raf., Sabal deeringiana Small, Sabal floribunda Katzenstein, Sabal glabra (Mill.) Sarg., Sabal louisiana (Darby) Bomhard, Sabal minima Nutt., Sabal pumila (Walter) Elliott
Family: Arecaceae Bercht. et J. Presl

Syn.: Sagittaria esculenta Howell, Sagittaria gracilis Pursh, Sagittaria hastata Pursh, Sagittaria longirostra (Micheli) J. G. Sm., Sagittaria obtusa Muhl. ex Willd., Sagittaria ornithorhyncha Small, Sagittaria planipes Fernald, Sagittaria pubescens Muhl., Sagittaria simplex Pursh, Sagittaria variabilis Engelm., Sagittaria viscosa C. Mohr, Urospatha friedrichsthaliana Schott
Family: Alismataceae Vent.

Syn.: Salix longifolia var. exigua (Nutt.) Bebb, Salix fluviatilis var. exigua (Nutt.) Sarg.
Family: Salicaceae Mirbel

Syn.: Ripselaxis herbacea (L.) Raf.
Family: Salicaceae Mirbel

Syn.: Salix aemulans Seem., Salix reticulata var. nana Andersson, Salix reticulata subsp. nivalis (Hook.) Á. Löve, D. Löve et B. M. Kapoor, Salix reticulata var. nivalis (Hook.) Andersson, Salix reticulata var. saximontana (Rydb.) Kelso, Salix saximontana Rydb., Salix vestita var. nana Hook.
Family: Salicaceae Mirbel

Syn.: Salvia pseudococcinea Jacq., Horminum coccineum (Buc’hoz ex Etl.) Moench
Family: Lamiaceae Martinov

Family: Salviniaceae Rchb.

Syn.: Belharnosia canadensis (L.) Nieuwl.
Family: Papaveraceae Juss.

Syn.: Sanguisorba auriculata Scop., Sanguisorba major Gilib., Sanguisorba angustifolia Opiz, Poterium officinale (L.) A. Gray
Family: Rosaceae Juss.