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| Kingdom Plantae |
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Hemizonia calyculata (Babc. & H.M. Hall) D.D. Keck -- not accepted |
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Hemizonia congesta ssp. calyculata Babc. & H.M. Hall -- accepted -- hayfield tarweed |
| |
Hemizonia congesta ssp. clevelandii (Greene) Babc. & H.M. Hall -- accepted -- hayfield tarweed |
| |
Hemizonia congesta ssp. lutescens (Greene) Babc. & H.M. Hall -- accepted -- hayfield tarweed |
| |
Hemizonia congesta ssp. luzulifolia (DC.) Babc. & H.M. Hall -- accepted -- hayfield tarweed |
| |
Hemizonia congesta ssp. tracyi Babc. & H.M. Hall -- accepted -- hayfield tarweed |
| |
Hemizonia luzulifolia ssp. tracyi Babc. & H.M. Hall -- not accepted |
| |
Hemizonia tracyi (Babc. & H.M. Hall) D.D. Keck -- not accepted |
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