Willamette Valley Butterflies and Native Host Plants
By Bruce Newhouse, January 2001
| Common Name of Host Plant | Latin Name | Documented Butterflies | Suspected Butterflies |
|---|---|---|---|
| nettle, stinging | Urtica dioica | Red Admiral, Painted Lady, West Coast Lady, Satyr Comma, Milbert's Tortoiseshell | Green Comma |
| cherry, choke | Prunus virginiana | Western Tiger and Pale Swallowtails, Lorquin's Admiral, Echo Azure Blue | Painted Lady |
| lupine, many-leaved | Lupinus polyphyllus | Painted Lady, Western Tailed Blue, Silvery Blue | Clouded Sulpher, West Coast Lady, Gray Hairstreak, Echo Azure Blue, Fender's Blue, Acmon Blue, Silver-spotted Skipper |
| vetch, American | Vicia americana | Orange Sulpher, Clouded Sulpher, Gray Hairstreak, Western Tailed Blue | Silvery Blue |
| oceanspray | Holodiscus discolor | Pale Swallowtail, Lorquin's Admiral, Echo Azure Blue | |
| willow, Scouler's | Salix scouleriana | Western Tiger Swallowtail | Lorquin's Admiral |
| yellow monkeyflower | Mimulus guttatus | Buckeye, Mylitta Crescent | Snowberry Checkerspot, Edith's Checkerspot |
| cress, American winter | Barbarea othoceras | Julia (Sara) Orangetip | Western White |
| violet, early blue | Viola adunca var. adunca | Great Spangled Fritillary, Hydaspe Fritillary, Callippe Fritillary | Pacific Fritillary, Zerene Fritillary |
| mugwort | Artemesia douglasiana | Painted Lady, American Painted Lady | West Coast Lady |
| oak, Oregon white | Quercus garryana | Propertius Duskywing | Lorquin's Admiral, California Sister, Gray Hairstreak, Echo Azure Blue |
| everlasting, pearly | Anaphalis margaritacea | Painted Lady, American Painted Lady | West Coast Lady |
| violet, stream | Viola glabella | Pacific Fritillary, Hydaspe Fritillary, Callippe Fritillary | Great Spangled Fritillary, Zerene Fritillary |
| maple, bigleaf | Acer macrophyllum | Western Tiger Swallowtail | Mourning Cloak, Echo Azure Blue |
| milkweed, showy | Asclepias speciosa | Monarch | Gray Hairstreak |
| yarrow | Achillea millefolium | Painted Lady | Purplish Copper, Gray Copper, Two-banded Checkered Skipper |
| heart, bleeding | Dicentra formosa | Clodius Parnassian | |
| lomatium, fernleaf | Lomatium dissectum | Anise Swallowtail | |
| cinquefoil, slender | Potentilla gracilis | Purplish Copper, Two-banded Checkered Skipper | |
| checkermallow, meadow | Sidalcea campestris | West Coast Lady, Common Checkered Skipper, Two-banded Checkered Skipper | |
| checkermallow, rosy | Sidalcea virgata | West Coast Lady, Common Checkered Skipper, Two-banded Checkered Skipper | |
| strawberry, broadpetal | Fragaria virginiana var. platyphylla | Painted Lady | Gray Hairstreak |
| rose, Nootka | Rosa nutkana | Gray Hairstreak, Snowberry Checkerspot | |
| wildrye, blue | Elymus glaucus | Common Wood Nymph, Skippers | |
| fescue, California | Festuca californica | Common Wood Nymph, Skippers | |
| brome, California | Bromus carinatus | Common Wood Nymph, Skippers | |
| Compiled by: | Bruce Newhouse, 2001 |