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4,118 species in Yellowstone National Park
Lebia pulchella
Lecanora bicincta
Lecanora frustulosa
Lecidella elaeochroma
Lepidium virginicum
Leptosporomyces mundus
Lescuraea radicosa
Lewinskya laevigata
Libellula pulchella
Lichenoconium lecanorae
Luzula glabrata
Mareca penelope
Megachile rotundata
Melanoplus confusus
Melanoplus fasciatus
Melissodes coreopsis
Mephitis mephitis
Mertensia tweedyi
Metator pardalinus
Microseris nutans
Microspora amoena
Mimus polyglottos
Moehringia lateriflora
Muhlenbergia andina
Muhlenbergia filiformis
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