The fronds spring up in clusters and emerge as fiddleheads (circinate vernation). As with other ferns, the leaves develop in a circinate pattern. This uncurling of the leaf is termed circinate vernation. Left on the plant, each fiddlehead would unroll into a new frond (circinate vernation). They are light green, often crinkled, with a black midrib, and exhibit circinate vernation. As in most ferns, young fronds have circinate vernation. Circinate vernation is the manner in which a fern frond emerges. Circinate balanitis is one of the most common cutaneous manifestation of reactive arthritis. However, this plant retains the circinate vernation characteristic of most ferns.