Stems: pubescent with brownish hairs. Leaves: round-cordate, three-to-five lobed, toothed. Flowers: small, green, in simple spicate racemes; calyx short, campanulate; petals pectinately pinnate, with filiform pinnaea.
The Mitrewort is one of the few absolutely green flowers that grow in the mountains; it derives its name of Mitella, or Bishop's Cap, from the form of the seed-pod. It differs from Nancy-over-the-ground, first, in that its blossoms are much more fragile and green, and secondly, in that it is more leafy and is covered with tiny hairs.
Mitella nuda, or Bishop's Cap, has a stoloniferous stem. The leaves are circular and deeply cordate at the base, bluntly toothed at the edge, and covered on both sides with scattered hairs. The greenish flowers are similar to those of the preceding species.
Mitella pentandra, or Five-stamened Mitrewort, has leaves which are circular in outline, but usually three-to-five lobed and unequally toothed at the edge. The flowers have a bell-shaped calyx with very short lobes and compound petals. The five stamens are placed opposite the petals.
Mitella trifida, or Alpine Mitrewort, is sparingly covered with coarse white hairs, and the flowers grow in a one-sided cluster, each tiny stalk being subtended by a white bract. Both the bell-shaped calyx and the three-toothed petals are white.