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
     
Oclemena acuminata Whorled Aster Asteraceae
Oclemena nemoralis Bog Aster Asteraceae
Oenothera biennis Common Evening Primrose Onagraceae
Oenothera clelandii Sand Evening Primrose Onagraceae
Oenothera laciniata Cutleaf Evening Primrose Onagraceae
Oenothera parviflora Northern Evening Primrose Onagraceae
Oenothera perennis Small Sundrops Onagraceae
Oenothera pilosella Prairie Sundrops Onagraceae
Onoclea sensibilis Sensitive Fern Dryopteridaceae
Ophioglossum pusillum Northern Adder's Tongue Ophioglossaceae
Opuntia fragilis Brittle Prickly Pear Cactaceae
Opuntia humifusa Eastern Prickly Pear Cactaceae
Opuntia macrorhiza Plains Prickly Pear Cactaceae
Orobanche uniflora One-flowered Cancer Root Orobanchaceae
Orontium aquaticum Golden Club Araceae
Orthilia secunda One-sided Wintergreen Ericaceae
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 stricta Yellow Woodsorrel Oxalidaceae
Oxalis violacea Violet Woodsorrel Oxalidaceae
Oxydendrum arboreum Sourwood Ericaceae

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2004 Michael Hough