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3,375 species in Joshua Tree National Park
Pterocheilus pimorum
Pterostichus illustris
Pyrausta pseudonythesalis
Pyrus calleryana
Quercus dumosa
Riccia cavernosa
Rufoplaca arenaria
Rumex crispus
Sagina apetala
Salsola australis
Salvia mellifera
Saprinus discoidalis
Sarcogyne hypophaea
Satyrium behrii
Satyrium sylvinus
Scantius aegyptius
Schinia erosa
Schinia felicitata
Schinia ligeae
Scotoleon longipalpis
Seila montereyensis
Sesuvium verrucosum
Setaria italica
Setophaga palmarum
Simpsonanthus jonesii
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