Click here first if you need to cross reference common name to scientific name, family name to scientific name, or search directly by scientific name

 2. Click on letter for list of plant scientific names   

Herbaceous Plants
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 3. Click on species name to view images. 15 record(s) found

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Oenothera fruticosa    Sundrops
Oenothera macrocarpa    Ozark Sundrops
Onopordum acanthium    Giant Thistle
Ophiopogon planiscapus 'Nigrescens'    Black Mondo Grass
Opuntia basilaris    Beavertail Cactus
Opuntia fragilis    Brittle Cactus
Opuntia humifusa    Eastern Prickly Pear
Opuntia phaeacantha var. major    Prickly Pear (this plant is no longer in collection)
Opuntia polyacantha    Plains Prickly Pear
Opuntia polyacantha var. erinacea    Long-spined Prickly Pear
Ornithogalum nutans    Nodding Star of Bethlehem
Orontium aquaticum    Golden-club
Osmunda cinnamomea    Cinnamon Fern
Osmunda claytoniana    Interrupted Fern
Osmunda regalis var. spectabilis    Royal Fern