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4,118 species in Yellowstone National Park
Epilobium lactiflorum
Epirrhoe plebeculata
Ericameria linearis
Blitum nuttallianum
Erigeron caespitosus
Alisma plantago-aquatica
Erigeron subtrinervis
Erigeron uniflorus
Eristalis anthophorina
Eristalis stipator
Erynnis icelus
Athyrium americanum
Smelowskia calycina
Eucerceris flavocincta
Euglesa casertana
Euglesa variabilis
Eupeodes fumipennis
Solidago nemoralis
Euphydryas chalcedona
Eurois occulta
Eustrongylides tubifex
Evarcha proszynskii
Evernia mesomorpha
Fallopia convolvulus
Festuca minutiflora
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