Index of plants by genus

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Species Common Name Family
     
Oenothera biennis Common Evening Primrose Onagraceae
Oenothera clelandii Sand Evening Primrose Onagraceae
Oenothera perennis Small Sundrops Onagraceae
Onoclea sensibilis Sensitive Fern Dryopteridaceae
Opuntia humifusa Eastern Prickly Pear Cactaceae
Orontium aquaticum Golden Club Araceae
Oryzopsis racemosa  Black-seeded Rice Grass Poaceae
Osmorhiza claytonii Hairy Sweet Cicely Apiaceae
Osmorhiza longistylis Sweet Cicely Apiaceae
Osmunda cinnamomea Cinnamon Fern Osmundaceae
Osmunda claytonia Interrupted Fern Osmundaceae
Osmunda regalis Royal Fern Osmundaceae
Ostrya virginiana Hop-hornbeam Betulaceae
Oxalis montana Mountain Woodsorrel Oxalidaceae
Oxalis violacea Violet Woodsorrel Oxalidaceae
Oxydendrum arboreum Sourwood Ericaceae

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2004 Michael Hough