Plants 0.5-4 m. Leaves 2-13 × 1-8 cm. Flowers: corolla white to pale pink or purplish, 10-17 × 3-7 mm. Capsules compressed-cylindric, ca. 10 mm. Seeds compressed-globose, lustrous. 2n = 32.
Adlumia fungosa is apparently naturalized in southwestern British Columbia. It was reported to be "freely escaping" from a garden in Alberta (H. Groh 1949), and it is a casual, but usually not persisting, escape elsewhere.