Calochortus subalpinus, the subalpine mariposa lily, is a North American species of flowering plants in the lily family native to the northwestern United States (States of Washington and Oregon).Piper, Charles Vancouver 1906. Contributions from the United States National Herbarium 11: 195

Description Calochortus subalpinus is a perennial herb producing an unbranched stem up to about 30 centimeters tall. Flowers are white to pale lavender with white and orange hairs on the petals.Flora of North America, Vol. 26 Page 126 Calochortus subalpinus Piper

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Turner Photographics Pacific Northwest Wildflowers Pacific Bulb Society, Calochortus Species Six photos of several species including Calochortus subalpinus