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5,334 species in Acadia National Park
Rosa nitida
Rudbeckia laciniata
Ruppia maritima
Russula lutea
Salix pyrifolia
Salvelinus alpinus
Scapania nemorea
Schizura ipomaeae
Sempervivum ruthenicum
Shortia galacifolia
Silene flos-cuculi
Sisyrinchium mucronatum
Somatochlora elongata
Sonchus asper
Sonchus oleraceus
Sparganothis sulfureana
Spergula arvensis
Sphagnum imbricatum
Sphagnum subnitens
Sphagnum warnstorfii
Spilopteron vicinum
Stellaria humifusa
Stereocaulon pileatum
Sternula antillarum
Stomoxys calcitrans
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