Stems: scale slender, six to eighteen inches high. Leaves: broadly lanceolate to ovate. Flowers: perianth broadly funnel form, of six distinct broadly lanceolate segments, slenderly acuminate, the inner ones with small teeth at base. Fruit: capsule membranaceous, obtusely triangular, seeds in two rows in each cell, ascending, with brown or black rugulose testa somewhat loose at the apex.

This Adder's Tongue has lovely white flowers, the segments of the perianth being more or less revolute, and orange at the base. The leaves are pale green, and not mottled, they are oval and abruptly contracted at the base into a winged petiole. One to three flowers grow on the slender stalks that are six to twelve inches high.