Family: Droseraceae Salisb.

Syn.: Geum octopetalum (L.) E. H. L. Krause, Ptilotum octopetalum (L.) Dulac
Family: Rosaceae Juss.

Syn.: Aspidium ludovicianum Kunze, Dryopteris floridana (Hook.) Kuntze, Nephrodium floridanum Hook.
Family: Dryopteridaceae Ching

Syn.: Echinocereus triglochidiatus var. arizonicus (Rose ex Orcutt) L. D. Benson
Family: Cactaceae Juss.

Syn.: Cereus coccineus var. melanacanthus Engelm., Echinocereus coccineus var. inermis (K. Schum.) J. A. Purpus, Echinocereus phoeniceus var. inermis K. Schum., Echinocereus triglochidiatus var. melanacanthus (Engelm.) L. D. Benson
Family: Cactaceae Juss.

Syn.: Cereus pectinatus var. rigidissimus Engelm., Echinocereus dasyacanthus var. rigidissimus (Engelm.) W. T. Marshall, Echinocereus pectinatus var. rigidissimus (Engelm.) Rumpler
Family: Cactaceae Juss.

Syn.: Alisma andrieuxii Hook. et Arn., Alisma intermedium Mart. ex Schult. f., Alisma subalatum Mart. ex Schult. f., Aquarius subulatus (Mart. ex Schult. f.) Christenh. et Byng, Echinodorus andrieuxii (Hook. et Arn.) Small, Echinodorus subalatus subsp. andrieuxii (Hook. et Arn. ) R. R. Haynes et Holm-Niels.
Family: Alismataceae Vent.

Syn.: Echinops multiflorus Lam., Echinops paniculatus Jacq., Echinops cirsiifolius C. Koch, Echinops viscosus Wierzb. in Griseb. et Schenk
Family: Asteraceae Bercht. et J. Presl

Syn.: Argyrexias candicans Raf., Echium maderense Steud.
Family: Boraginaceae Juss.

Syn.: Echium altissimum Jacq., Echium pyramidatum DC.
Family: Boraginaceae Juss.

Syn.: Echium russicum J. F. Gmelin, Echium rubrum Jacq., Pontechium maculatum (L.) U.-R. Böhle et Hilger
Family: Boraginaceae Juss.

Family: Boraginaceae Juss.

Family: Boraginaceae Juss.

Syn.: Elegia verticillaris (L. f.) Kunth, Equisetum capense Burm. f., Restio verticillaris L. f., Restio verticillatus Spreng.
Family: Restionaceae R. Br.

Family: Orchidaceae Juss.