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Scientific Name Common Name(s) Plant Category Image
Oenothera fruticosa Sundrops Herbs, Native Plants, Perennials, Wildflowers
Oenothera tetragona Sundrops Perennials, Wildflowers
Orontium aquaticum Golden club Poisonous Plants, Water Garden, Wildflowers
Oxalis Clover, Good luck plant, Lucky clover, Oxalis, Shamrock, Wood-sorrel Annuals, Perennials, Poisonous Plants, Summer Bulbs, Wildflowers
Oxalis corniculata L. Creeping woodsorrel Annuals, Perennials, Wildflowers
Oxalis grandis Large yellow wood-sorrel, Oxalis, Sourgrass Poisonous Plants, Wildflowers
Oxalis montana Common wood sorrel, Sourgrass Poisonous Plants, Wildflowers
Oxalis stricta L. Common yellow woodsorrel, Lemon clover, Pickle plant, Sourgrass, Yellow woodsorrel Annuals, Perennials, Wildflowers
Oxalis violacea Violet wood sorrel Poisonous Plants, Wildflowers
Pachysandra procumbens Allegheny spurge Wildflowers
Parnassia asarifolia Grass-of-parnassus, Kidney-leaf grass-of-parnassus Wildflowers
Parthenium integrifolium American feverfew, Wild quinine Perennials, Wildflowers
Passiflora incarnata Maypop, Passion flower Edible Plants, Native Plants, Perennials, Vines, Wildflowers
Pedicularis canadensis Lousewort, Wood betony Wildflowers
Penstemon canescens Beard-tongue, Penstemon Herbs, Native Plants, Perennials, Wildflowers
Penstemon cobaea Cobaea beardtongue Wildflowers
Penstemon digitalis Foxglove beardtongue, White beardtongue Native Plants, Perennials, Wildflowers
Penstemon laevigatus Eastern beardtongue, Eastern smooth beardtongue, Smooth beardtongue Herbs, Native Plants, Perennials, Wildflowers
Penstemon smallii Beard tongue Herbs, Native Plants, Perennials, Wildflowers
Phacelia bipinnatifida Loose-flowered phacelia, Purple phacelia Wildflowers
Phacelia purshii Miami mist, Scorpionweed Wildflowers
Phlox carolina Carolina phlox, Summer phlox, Thickleaf phlox Herbs, Native Plants, Perennials, Wildflowers
Phlox divaricata Blue phlox Herbs, Native Plants, Wildflowers
Phlox glaberrima Smooth phlox Wildflowers
Phlox paniculata Fall phlox, Garden phlox, Tall phlox Herbs, Native Plants, Perennials, Wildflowers