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Scientific Name Common Name(s) Plant Category Image
Quercus glauca Japanese blue oak, Ring cupped oak Poisonous Plants, Trees
Quercus hemisphaerica Laurel oak Native Plants, Poisonous Plants, Trees
Quercus imbricaria Shingle oak Poisonous Plants, Trees
Quercus laevis Turkey oak Poisonous Plants, Trees
Quercus lyrata Overcup oak Native Plants, Poisonous Plants, Trees
Quercus macrocarpa Bur oak Poisonous Plants, Trees
Quercus michauxii Cow oak, Michaux oak, Swamp chestnut oak Native Plants, Poisonous Plants, Trees
Quercus muehlenbergii Chinkapin oak Poisonous Plants, Trees
Quercus nigra Possum oak, Water oak Native Plants, Poisonous Plants, Trees
Quercus nutallii Nuttall oak Poisonous Plants, Trees
Quercus oglethorpensis Oglethorpensis oak Poisonous Plants, Trees
Quercus pagoda Cherry bark oak, Cherrybark oak Native Plants, Trees
Quercus palustris Pin oak Native Plants, Poisonous Plants, Trees
Quercus petraea Durmast oak, Sessile oak Poisonous Plants, Trees
Quercus phellos Willow oak Native Plants, Poisonous Plants, Trees
Quercus prinus Chestnut oak Poisonous Plants, Trees
Quercus robur English oak, Truffle oak Poisonous Plants, Trees
Quercus robur 'Fastigiata' Columnar English oak Poisonous Plants, Trees
Quercus rubra Northern Red oak, Red oak Native Plants, Poisonous Plants, Trees
Quercus schumardii Shumardi red oak Native Plants, Poisonous Plants, Trees
Quercus shumardii Shumard Oak Native Plants, Trees
Quercus spp. Oak Poisonous Plants
Quercus stellata Post oak Native Plants, Poisonous Plants, Trees
Quercus variabilis Oriental oak Poisonous Plants, Trees
Quercus velutina Black oak Native Plants, Trees
Quercus virginiana Live oak Native Plants, Poisonous Plants, Trees
Ranunclus flammula Lesser spearwort, Minature spearwort Water Garden
Ranunculus Persian buttercup, Ranunculus Poisonous Plants, Summer Bulbs
Ranunculus carolinianus Carolina buttercup Poisonous Plants, Wildflowers
Ranunculus hybrids Persian Buttercup Poisonous Plants, Spring Bulbs
Ranunculus spp. Buttercup, crowfoot Annuals, Perennials, Poisonous Plants
Ratibida columnifera Long-headed coneflower, Mexican hat, Prairie coneflower Perennials
Ratibida pinnata Gray-headed coneflower Wildflowers
Rhamnella franguloides Rhamnella Trees
Rhamnus caroliniana Carolina buckthorn Poisonous Plants, Trees
Rhamnus cathartica Common buckthorn Poisonous Plants, Trees
Rhamnus fragula Alder buckthorn, Glossy buckthorn Poisonous Plants, Shrubs
Rhamnus spp. Buckthorn Poisonous Plants
Rhaphiolepis indica Indian hawthorn Shrubs
Rhaphiolepis umbellata Indian hawthorn, Yeddo hawthorn Shrubs
Rhaphiolepis x delacourii Indian hawthorn Shrubs
Rhapidiophyllum hystrix Needle palm Shrubs
Rheum X cultorum (R. rhaponticum, R. rhabarbarum) Rhubarb Poisonous Plants
Rhexia virginica Meadow beauty Perennials, Wildflowers
Rhodochiton atrosanguineus Purple bell vine Vines
Rhododendron 'Ramapo' Ramapo rhododendron Poisonous Plants, Shrubs
Rhododendron 'Windbeam' Windbeam Poisonous Plants, Shrubs
Rhododendron (PJM Group) PJM Rhododendron, Rhododendron Shrubs
Rhododendron ×bakeri 'Clyo Red' Cumberland azalea Native Plants, Poisonous Plants, Shrubs
Rhododendron alabamense Alabama azalea Poisonous Plants, Shrubs