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3,329 species in Kejimkujik National Park
Rhizoplaca subdiscrepans
Rhodobryum ontariense
Rhodocollybia butyracea
Rhodocollybia prolixa
Rhomphaea fictilium
Rhytidiadelphus subpinnatus
Rhytisma americanum
Rhytisma punctatum
Robertus banksi
Rosa multiflora
Rubus allegheniensis
Rubus canadensis
Rugathodes sexpunctatus
Rumex obtusifolius
Russula praeumbonata
Sagittaria graminea
Sanicula marilandica
Scaptomyza flava
Sceliphron caementarium
Scelolyperus meracus
Sciaphilus asperatus
Sciapus tener
Sciastes truncatus
Scirpus longii
Sclerophora peronella
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