Erythronium oregonum is an herbaceous perennial standing up to 30 cm tall on a stem porduced from a segmented corm. All members of the genus Erythronium posess a segmented corm that sits at least 10 cm below the soil surface. The basal leaves are typically paired and oblong in shape, measuring up to 20 cm long. The upper leaf surface is mottled with light green and brown patches. The nodding flowers are borne singly on top if the leafless stem. The tepals are white with orange and yellow coloring toward the base, each of the six reaching upward. The fruit is a club shaped capsule with a notch at the top measuring up to 4 cm in length. The leaves and color of the tepals together, will indicate the identity of this species. The large bright yellow anthers contrast sharply with the muted colors of the tepals.
E. oregonum is typically found in well drained soils of various habitats, including open, grassy to dense rocky wooded areas of low elevations west of the Cascades. The geographic distribution runs from British Columbia south through the Puget Trough but does not extend west of the Olympic Peninsula, to the Columbia River and through the Willamette Valley to Josephine County in Oregon.
The common name of E. oregonaum is the white fawn lily, because the mottled leaves suppossedly look like the pricked ears of a fawn.
The photos were taken at Chip Ross Park in Corvallis, Oregon.
Hitchcock, C.L. and A. Cronquist (1994) Flora of the Pacific Northwest, University of Washington Press, Seattle and London.
Kozloff, E.N. (1976) Plants and Animals of the Pacific Northwest. University of Washington Press, Seattle and London.
Pojar, J. and A. McKinnon (1994) Plants of the Pacific Northwest Coast. Lone Pine Publishing, Washington, Canada.