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Callitriche hermaphroditica Linnaeus
Besseya wyomingensis (A. Nelson) Rydberg
Chaenorhinum minus (Linnaeus) Lange
Collinsia parviflora Douglas
Nuttallanthus texanus (Scheele) D.A. Sutton
Linaria dalmatica (Linnaeus) Miller subsp. dalmatica
Penstemon confertus Douglas
Penstemon procerus Douglas
Veronica chamaedrys Linnaeus
Veronica agrestis Linnaeus
Veronica longifolia Linnaeus
Veronica serpyllifolia var. humifusa (Dickson) Vahl
Plantago canescens Adams
Plantago maritima var. juncoides (Lamarck) A. Gray
Plantago patagonica Jacquin var. patagonica
Veronica scutellata Linnaeus
Penstemon gracilis Nuttall
Plantago major Linnaeus
Veronica peregrina subsp. xalapensis (Kunth) Pennell
Veronica americana (Rafinesque) Schweinitz
Plantago eriopoda Torrey
Callitriche verna Linnaeus
Penstemon albidus Nuttall
Penstemon ellipticus J.M. Coulter & Fisher
Veronica wormskjoldii Roemer & Schultes
Veronica persica Poiret
Linaria vulgaris Miller
Penstemon fruticosus var. scouleri (Lindley) Cronquist
Plantago elongata Pursh
Linaria maroccana Hooker f.
Veronica anagallis-aquatica Linnaeus
Penstemon nitidus Douglas ex Bentham
Penstemon albertinus Greene
Penstemon eriantherus Pursh
Plantago spinulosa Decaisne
Key to plants of the farming and ranching areas of the Canadian prairies, A
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