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Rhynchospora radicans (Schltdl. & Cham.) H.Pfeiff.
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Rhynchospora radicans subsp. microcephala (Bertero ex Spreng.) W.W.Thomas
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Rhynchothorax arenicolus Stock, 1989
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Rhynchozoon rostratum (Busk, 1855)
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Rhyparobia maderae (Fabricius, 1781)
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Rhypasma mariagratiae Marcuzzi, 1953
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Rhypasma venezuelense Marcuzzi, 1953
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Riccardia chamedryfolia (With.) Grolle
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Riccardia sprucei (Steph.) Meenks & C.De Jong
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Ricinus communis L.
Castor Plant
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Ricordea florida Duchassaing & Michelotti, 1860
Florida Corallimorph
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Rimosodaphnella morra (Dall, 1881)
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Rimula frenulata (Dall, 1889)
Bridle Rimula
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Rimula pycnonema Pilsbry, 1943
Threaded Rimula
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Rinodina antillarum Vain.
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Rinodina colobinoides (Nyl.) Müll. Arg.
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Rinodina intrusa (Nyl.) Malme
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Rinodina pyxinoides Vain.
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Riparia riparia (Linnaeus, 1758)
Sand Martin
Oeverzwaluw
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Risor ruber (Rosén, 1911)
Tusked Goby
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Rissoella caribaea Rehder, 1943
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Rissoina dyscrita Faber, 1990
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Rissoina hummelincki De Jong & Coomans, 1988
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Rissoina labrosa Schwartz von Mohrenstern, 1860
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Rissoina multicostata (Adams, 1850)
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Rissoina vanderspoeli De Jong & Coomans, 1988
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Rissopsetia hummelincki Faber, 1984
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Rivina humilis L.
Jumby Pepper
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Robertina hathawayae McCulloch, 1981
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Robertina subcylindrica (Brady, 1881)
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Robertinoides bradyi (Cushman & Parker, 1936)
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Robinsichthys nigrimarginatus Tornabene, Manning, Robertson, van Tassell & Baldwin, 2023
Black-margined goby
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Robulus atomiformis McCulloch, 1981
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Robulus convergiformis McCulloch, 1981
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Robulus orbiculariformis McCulloch, 1981
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Robulus tortugaensis McCulloch, 1981
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Roccella gracilis Bory
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Roccella peruensis Darb.
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Roccella verruculosa Follmann
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Roccellographa circumscripta (Leight.) Ertz & Tehler
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Rocellaria stimpsonii Tryon, 1861
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Rochefortia acanthophora (DC.) Griseb.
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Rodolia cardinalis (Mulsant, 1850)
Vedalia Beetle
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Rogeria curvipubens Emery, 1894
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Rogeria foreli Emery, 1894
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Rormopsolus orientalis Yamaguti, 1934
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Rosalina clariformis McCulloch, 1981
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Rosalina floridana (Cushman, 1922)
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Rosalina globularis d'Orbigny, 1826
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Rosenvingea intricata (J. Agardh) Børgesen, 1914
