| Artemisia ludoviciana | White Sage, Louisiana Sage, Prairie Sage, Western Mugwort | Asteraceae | | 2 | 2 |
| Artemisia ludoviciana gnaphalodes | White Sage | Asteraceae | A. gnaphalodes. Nutt. | 0 | 2 |
| Artemisia mexicana | Mexican White Sagebrush | Asteraceae | A. ludoviciana mexicana. (Willd.)Fern. | 0 | 1 |
| Avena ludoviciana | Oats | Poaceae | | 2 | 0 |
| Cicer arietinum | Chick Pea | Fabaceae | Homotypic Synonyms Vicia arietina (L.) E.H.L.Krause. Accepted Infraspecifics: C. arietinum subsp. arietinum C. arietinum subsp. reticulatum (Ladiz.) Moreno & Cubero ex Del Guacchio & P.Caputo | 4 | 1 |
| Lactuca ludoviciana | Western Wild Lettuce, Biannual lettuce | Asteraceae | | 2 | 2 |
| Orobanche ludoviciana | Broomrape, Louisiana broomrape | Orobanchaceae | Homotypic Synonyms: Aphyllon ludovicianum (Nutt.) A.Gray. Conopholis ludoviciana (Nutt.) A.Wood. Myzorrhiza ludoviciana (Nutt.) Rydb. O. ludoviciana var. genuina Beck. Phelypaea ludoviciana (Nutt.) G.Don. | 1 | 1 |
| Vicia americana | American Vetch, Mat vetch | Fabaceae | Lathyrus diffusus. Orobus diffusus | 2 | 1 |
| Vicia amoena | | Fabaceae | | 1 | 0 |
| Vicia amurensis | | Fabaceae | Vicia japonica sensu auct. Vicia pallida. Vicia ussuriensis | 1 | 0 |
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