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4,927 species in Cuyahoga Valley National Park
Noturus flavus
Oecanthus niveus
Orthoseira roeseana
Oryzopsis asperifolia
Otiorhynchus sulcatus
Oxalis corniculata
Paectes oculatrix
Panicum capillare
Arabidopsis thaliana
Panopoda carneicosta
Panus conchatus
Parancistrocerus perennis
Parasa chloris
Paronychia canadensis
Phaeophyscia adiastola
Phaeoura quernaria
Phleogena faginea
Phlox subulata
Phoberia atomaris
Pholiota aurivella
Plagodis kuetzingi
Platydracus maculosus
Platynus reflexus
Pluteus petasatus
Lolium perenne
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