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3,375 species in Joshua Tree National Park
Prionus californicus
Pseudognaphalium luteoalbum
Pseudoscaeva diversifasciata
Psora russellii
Psorothamnus polydenius
Pupoides albilabris
Quercus palmeri
Rena humilis
Rhionaeschna multicolor
Rhus ovata
Salix lasiolepis
Salsola paulsenii
Salticus palpalis
Schizopus laetus
Scolopocerus uhleri
Scolopsella reticulata
Scyphophorus yuccae
Senecio vulgaris
Senna covesii
Serradigitus joshuaensis
Setaria verticillata
Sisyrinchium micranthum
Slaterocoris flavipes
Sphex lucae
Squamulea subsoluta
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