Owen's Writings
 
 
 

Poisonous Plants Commonly Occurring in
Southern California

LATIN NAME COMMON NAME
Aesculus californica California Buckeye
Agapanthus spp. Lily of the Nile
Allium spp. Wild Garlic/Wild Onion
Alocasia spp. Elephant's Ear
Aloe spp. no common name
Amaryllis spp. no common name
Anagallis arvensis Pimpernel
Anemone spp. Pasque Flower
Argemone munita Prickly Poppy
Aucuba japonica Japanese Aucuba
Brassica spp. Mustard, Wild Radish
Buxus sempervirens Boxwood
Caladium spp. no common name
Calycanthus spp. Allspice, Sweetshrub
Cannabis sativa You-Know-What
Capsicum spp. Chili Pepper
Caryota spp. Fishtail Palm
Cassia fistula Golden Shower
Catharanthus roseus Periwinkle
Cestrum nocturnum Night-Blooming Jasmine
Chamaemelum nobile Chamomile
Clematis spp. no common name
Clivia spp. Kaffir Lily
Colocasia spp. Elephant's Ear
Conium maculatum Poison Hemlock
Corynocarpus laevigatus New Zealand Laurel
Cotyledon spp. no common name
Crassula arborescens Silver Jade Plant
Crassula argentea Jade Plant
Cyclamen europaeum Common Cyclamen
Cytisus spp. Broom
Datura spp. Jimson Weed
Dieffenbachia spp. Dumbcane
Digitalis purpurea Foxglove
Duranta repens Golden Dewdrop, Skyflower
Eriobotrya japonica Loquat
Erythrina spp. Coral Tree
Eschscholzia californica California Poppy
Euphorbia spp. various common names
Gelsemium sempervirens Carolina Jessamine
Hedera spp. Ivy
Hydrangea macrophylla no common name
Ilex spp. Holly
Ipomoea tricolor Morning Glory
Iris spp. no common name
Kalanchoe spp. no common name
Lantana camara no common name
Lathyrus odoratus Sweet Pea
Ligustrum vulgare Privet
Lobelia cardinalis Cardinal Flower
Lonicera spp. Honeysuckle
Mahonia spp. Holly Grape, Barberry
Malus spp. Apple
Mangifera indica Mango
Melaleuca quinquinervia Cajeput Tree
Melianthus major Honeybush
Mirabilis jalapa Four-O'Clock
Monstera deliciosa Cutleaf Philodendron
Myoporum laetum no common name
Narcissus spp. Daffodil
Nerium oleander Oleander
Nicotiana glauca Tree Tobacco
Philodendron spp. no common name
Phoradendron spp. Mistletoe
Prunus spp. Apricot, Peach, Plum
Ranunculus spp. Buttercup
Rhamnus californica Buckthorn
Rheum rhabarbarum Rhubarb
Rhododendron spp. Azalea, Rhododendron
Ricinus communis Castor Bean
Robinia pseudoacacia Black Locust
Sambucus caerulea, S. mexicana Elderberry
Schinus molle California Pepper
Schinus terebenthifolius Brazilian Pepper
Scilla spp. Squill
Senecio spp. various common names
Solandra spp. Chalice Vine
Solanum spp. various common names
Symphoricarpos spp. Snowberry
Taxus spp. Yew
Thevetia peruviana Yellow Oleander
Viola odorata Sweet Violet
Wisteria spp. no common name
Zantedeschia aethiopica Calla
Zigadenus spp. Death Camas
 
 

Plants Causing Dermatitis Commonly Occurring in
Southern California

LATIN NAME COMMON NAME
**Achillea millefolium
[PHYTOPHOTODERMATITIS]
Yarrow
**Agave spp.
[IRRITATING SAP]
various common names
Allium spp. Wild Onion
**Artemisia spp.
[CONTACT DERMATITIS]
Mugwort
Aster spp. no common name
Caladium bicolor no common name
Caryota mitis Fishtail Palm
Chrysanthemum spp. Daisy
**Citrus aurantifolia
[PHYTOPHOTODERMATITIS]
Lime
**Clematis spp.
[IRRITATING SAP]
Virgin's Bower
Cynodon dactylon Common Bermudagrass
**Daucus carota
[PHYTOPHOTODERMATITIS]
Carrot
Dichondra repens no common name
Dieffenbachia spp Dumbcane
Erigeron spp. Fleabane
**Eucalyptus globulus
[CONTACT DERMATITIS]
Blue Gum
Euphorbia spp. various common names
Ficus carica Fig
**Ficus pumila
[PHYTOPHOTODERMATITIS]
Creeping Fig
Gingko biloba Gingko Tree
Grevillea robusta Silk Oak
**Hedera spp.
[CONTACT DERMATITIS]
Ivy
Humulus lupulus Hops
Hyacinthus spp Hyacinth
Hydrangea spp. Hydrangea
Iva spp. Marsh Elder
Juglans nigra Black Walnut
**Larrea tridentata
[CONTACT DERMATITIS]
Creosote Bush
**Lupinus hirsutissimus
[STINGING HAIRS]
Stinging Lupine
**Lycopersicon esculentum
[CONTACT DERMATITIS]
Tomato
Maclura pomifera Osage Orange
**Magnolia grandiflora
[CONTACT DERMATITIS]
Magnolia
Narcissus spp. Daffodil
**Nerium oleander
[CONTACT DERMATITIS]
Oleander
**Opuntia spp.
[STINGING HAIRS, DETACHABLE NEEDLES]
various common names
Parthenocissus quinqefolia Virginia Creeper
Parthenocissus tricuspidata Boston Ivy
**Phacelia imbricata
[STINGING HAIRS]
no common name
Phacelia spp. various common names
Philodendron scandens Heartleaf Philodendron
Philodendron selloum no common name
Phoradendron serotinum Mistletoe
Plumbago capensis Cape Plumbago
Plumeria rubra no common name
Primula obconica German Primrose
Prosopis glandulosa Mesquite
Ranunculus spp. Buttercup
Ricinus communis Castor Bean
Rudbeckia hirta Blackeyed Susan
**Ruta graveolens
[PHYTOPHOTODERMATITIS]
Rue
Schinus terebenthifolius Brazilian Pepper
Senecio cineraria Cineraria, Dusty Miller
**Tagetes minuta
[CONTACT DERMATITIS]
Mexican Marigold
**Toxicodendron diversilobum
[CONTACT DERMATITIS]
Western Poison Oak
Tulipa spp. Tulip
**Umbellularia californica
[CONTACT DERMATITIS]
California Bay Laurel
Urtica dioica Stinging Nettle

SOURCES:

1. Lampe, Dr. Kenneth F. and Mary Ann McCann, AMA Handbook of Poisonous and Injurious Plants, c.1985, American Medical Association, Chicago

2. Fuller, Thomas C. and Elizabeth McClintock, Poisonous Plants of California, c.1986, University of California Press, Berkeley.

Other Articles by Owen E. Dell