*************************************************************
Aconitum, Monkshood
     Entire plants, especially roots and seeds
Arisaema triphyllum, Jack-in-the-Pulpit
     Roots
Asparagus officinalis, Asparagus
     Berries
*************************************************************
Buxus sempervirens, Boxwood
     Entire plant
*************************************************************
Caladium
     Entire plant
Convallaria majalis, Lily-of-the-Valley
     Entire plant
*************************************************************
Datura species, Jimson Weed, Angel's Trumpet
     All parts fatal, especially seed
Delphinium ajacis, Larkspur
     Entire plant, especially the seeds
Dieffenbachia species, Dumb cane
     Entire plant
Digitalis purpurea, Foxglove
     Leaves
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Euphorbia pulcherrima, Poinsettia
     Milky sap, fresh leaves or stems (no documented deaths)
Euphorbia milii, Crown of Thorns
     Milky sap and entire plant
Euphorbia tirucalli, milk-bush
     Milky sap and entire plant
Euphorbia marginata, Snow-on-the-Mountain
     Leaves, stems, milky sap
*************************************************************
Gelsemium sempervirens, Carolina Jessamine
     Roots, leaves, flowers
Gloriosa Lily
     All parts of the plant, especially tubers
************************************************************
Hedera helix, English Ivy
     Berries
Helleborus niger, Christmas Rose
     All parts poisonous, especially the leaves
Hippeastrum, Amaryllis
     Bulbs
Hydrangea macrophylla
     Entire plant, especially leaves and buds
Hyacinth
     Bulbs
*************************************************************
Ilex aguifolium, opaca, vomitoria
     Leaves and berries
Iris species
     Leaves and especially the rhizome
Ipomoea species, Morning Glory
     Seeds
*************************************************************
Kalmia latifolia, Mountain Laurel
     Young leaves and shoots
*************************************************************
Lathyrus, Sweet Pea
     Entire plant, especially the seeds
Lantana
     All parts, especially the green berries
Ligustrum species, Privet
     Fruit
Lupinnus, Lupine
     Entire plant, especially the seeds
Lobelia species
     Entire plant
Lycopersicon, Tomato
     Leaves, vines, sprouts
*************************************************************
Mirabilis jalapa, Four O'Clock
     Roots and seeds
*************************************************************
Narcissus, Daffodil
     Bulbs
Nerium oleander, Oleander
     Foliage
*************************************************************
Ornithogalum species
     Bulbs, leaves, flowers
*************************************************************
Philodendron species
     Entire plant
Phytolacca americana, Pokeweed
     Root
Prunus serotina, Wild Black Cherry, Rum Cherry
     Withered leaves quite poisonous, also fresh bark, leaves, seeds
*************************************************************
Rhododendron, Azalea and Rhododendron
     Entire plant
Rheum rhabarbarum, Rhubarb
     Leaves
Ricinus communis, Castor Oil Bean
      All parts fatal, especially the seeds
*************************************************************
Solanum dulcamara, Deadly Night Shade
     Berries
Solanum nigrum, Black Nightshade
     Leaves, berries especially when green
Solanum pseudocapsicum, Jerusalem Cherry
     Entire plant, especially leaves and unripened berries
Solanum tuberosum, Irish Potato
     Green potatoes, sprouts, and unripened berries
*************************************************************
Tanacetum vulgare, Tansy
     Leaves, stems, flowers
Taxus species, Yew
     Leaves, twigs, seeds
*************************************************************
Wisteria species, Wisteria
     Pods and seeds
*************************************************************
The above list may have omissions as to parts of plants that are poisonous and there are many other species and varieties, not listed, that are also poisonous to humans. Many of the Solanums are poisonous. The Ornamental and Christmas Peppers are not recommended for table consumption and normally used for colorful decorative purposes.