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932 gentians, dogbanes, madders, and allies species
Asclepias asperula
Cruciata pedemontana
Galium saxatile
Galium brevipes
Comastoma tenellum
Asclepias curassavica
Cicendia quadrangularis
Gentiana lutea
Gomphocarpus physocarpus
Galium spurium
Stenaria nigricans
Spigelia marilandica
Frasera umpquaensis
Galium divaricatum
Cycladenia humilis
Houstonia purpurea
Houstonia pusilla
Trachelospermum jasminoides
Gentianopsis nesophila
Gentiana saponaria
Gentiana fremontii
Gentiana nivalis
Pentas lanceolata
Vinca herbacea
Galium murale
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