Achillea millefolium L.LCLeast ConcernCommon nameMilfoilGenusAchilleaFamilyAsteraceae26,217 21,771 observations
Achillea ptarmica L.LCLeast ConcernCommon nameSneezeweedGenusAchilleaFamilyAsteraceae3,984 3,086 observations
Acmella repens (Walter) Rich.Common nameOppositeleaf spotflowerGenusAcmellaFamilyAsteraceae1 1 observation
Ageratina altissima (L.) R.M.King & H.Rob.Common nameRichweedGenusAgeratinaFamilyAsteraceae1,522 1,212 observations
Agoseris aurantiaca (Hook.) GreeneCommon nameMountain agoserisGenusAgoserisFamilyAsteraceae47 45 observations
Agoseris glauca (Pursh) Raf.Common namePrairie agoserisGenusAgoserisFamilyAsteraceae36 31 observations
Ambrosia acanthicarpa Hook.Common nameHooker's bur ragweedGenusAmbrosiaFamilyAsteraceae69 60 observations
Ambrosia artemisiifolia L.Common nameRoman-wormwoodGenusAmbrosiaFamilyAsteraceae5,766 4,582 observations
Amphiachyris dracunculoides (DC.) Nutt.Common nameBroomweedGenusAmphiachyrisFamilyAsteraceae108 99 observations
Anaphalis margaritacea (L.) Benth. & Hook.f.Common nameCommon PearlyeverlastingGenusAnaphalisFamilyAsteraceae1,553 1,174 observations
Antennaria howellii GreeneCommon nameHowell's pussytoesGenusAntennariaFamilyAsteraceae23 22 observations
Antennaria microphylla Rydb.Common nameLittleleaf pussytoesGenusAntennariaFamilyAsteraceae6 5 observations
