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Lichens & Fungi

Bryophytes (mosses, liverworts, hornworts)

Vascular Plants (ferns, seed plants)

Marine Invertebrates

Terrestrial Molluscs

Arthropods (centipedes, millipedes, spiders, insects)

Vertebrates (fish, amphibia, reptiles, birds, mammals)

Ochna atropurpurea DC.

Ochna kirkii Oliv.

Ocotea foetens (Aiton) Baill.

Oenothera affinis Camb.

Oenothera biennis L.

Oenothera glazoviana Micheli

Oenothera indecora Camb.

Oenothera laciniata Hill

Oenothera longiflora L.

Oenothera rosea L'Hér. ex Aiton

Oenothera stricta Ledeb. ex Link

Oenothera tetraptera Cav.

Onychium japonicum (Thunb.) Kunze

Ophioglossum azoricum C. Presl

Ophioglossum lusitanicum L.

Opuntia ammophila Small

Opuntia ficus-indica (L.) Mill.

Prickly Pear, Tuna

Opuntia stricta Haw. (Haw.)

Oreopteris limbosperma (All.) Holub

Lemon Scented Fern

Origanum majorana L.

Marjoram, Origanium

Origanum vulgare L.

Wild marjoram

Origanum vulgare L. subsp. virens (Hoffm. & Link) Ietsw.

Wild marjoram

Ornithogalum arabicum L.

Ornithopus compressus L.

Yellow Serradella

Ornithopus perpusillus L.

Ornithopus pinnatus (Mill.) Druce

Orange Bird's Foot

Ornithopus sativus Brot.

Orobanche crenata Forssk.

Orobanche hederae Duby

Ivy Broomrape

Orobanche minor Sm.

Common Broomrape, Lesser Broomrape

Orobanche sanguinea C. Presl

Bloody Broomrape

Osmunda regalis L.

Oxalis articulata Savigny

Pink Oxalis, Pink Sorrel

Oxalis corniculata L.

Oxalis corymbosa DC.

Large Flowered Pink Sorrel

Oxalis latifolia Kunth

Garden Pink Sorrel

Oxalis pes-caprae L.

Oxalis purpurea L.