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932 gentians, dogbanes, madders, and allies species
Asclepias cordifolia
Galium oreganum
Galium obtusum
Kelloggia galioides
Gentianopsis macounii
Asclepias stenophylla
Gentianopsis detonsa
Hexasepalum teres
Gentianopsis victorinii
Galium bifolium
Bartonia paniculata
Asclepias pumila
Galium serpenticum
Zeltnera exaltata
Galium kamtschaticum
Amsonia tabernaemontana
Cynanchum laeve
Frasera montana
Asclepias arenaria
Gentiana setigera
Zeltnera muehlenbergii
Galium ambiguum
Asclepias cryptoceras
Gentianopsis simplex
Gentiana newberryi
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