Viola selkirkii is a species of violet known by the common names Selkirk's violet and great-spur violet. It is native throughout the Northern Hemisphere, its distribution circumboreal. This species is a rhizomatous perennial herb with hairy, heart-shaped leaves. The flowers are up to 1.5 centimeters wide and are violet in color. They lack the beards that some other violets have. Each flower has a spur up to 7 millimeters long. The fruit is a capsule up to 6 millimeters wide. Flowering occurs between April and July. In some regions this violet may be confused with its relatives, the hookedspur violet (V. adunca) and the common blue violet (V. sororia). Its relatively large spur is a good distinguishing characteristic.