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4,501 species in Indiana Dunes National Park
Dichanthelium dichotomum
Eriophorum angustifolium
Hemerocallis lilioasphodelus
Heterocampa obliqua
Heterophleps triguttaria
Hieracium umbellatum
Hohenbuehelia angustata
Holwaya mucida
Hoplitis pilosifrons
Hortiboletus rubellus
Humidicutis marginata
Humulus lupulus
Hyacinthus orientalis
Hydrocanthus iricolor
Hydropsyche dicantha
Hygrocybe miniata
Hygrophorus sordidus
Hygrotus impressopunctatus
Hymenochara rufipes
Hypagyrtis unipunctata
Hyperaspis proba
Hypericum boreale
Hypericum swinkianum
Hypocaccus iris
Hypomyces chlorinus
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