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4,849 species in Grand Canyon National Park
Ammospermophilus harrisii
Aquilegia formosa
Argemone pleiacantha
Malacothrix torreyi
Oenothera deltoides
Ranunculus sceleratus
Erigeron eximius
Erynnis pacuvius
Eschatomoxys pholeter
Eucera truttae
Euphorbia polycarpa
Euphorbia schizoloba
Euphorbia serpens
Gavia immer
Glypholecia scabra
Grimmia anodon
Grusonia parishii
Gymnosperma glutinosum
Hedeoma oblongifolia
Hemeroplanis incusalis
Hordeum brachyantherum
Houstonia wrightii
Humulus americanus
Isocoma menziesii
Abies lasiocarpa
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