circinate

As with other ferns, the leaves develop in a circinate pattern.

However, this plant retains the circinate vernation characteristic of most ferns.

This uncurling of the leaf is termed circinate vernation.

They are light green, often crinkled, with a black midrib, and exhibit circinate vernation.

Circinate vernation is the manner in which a fern frond emerges.

Sporangia are circinate (ring-shaped) and bear multicellular stalks.

Left on the plant, each fiddlehead would unroll into a new frond (circinate vernation).

And he stood with his shoulders squared and his head raised, braced on the crux of his circinate doom.

Circinate vernation may also be observed in the extension of leaflets, in the compound leaves of Cycads.

The fronds of tree ferns also exhibit circinate vernation, meaning the young fronds emerge in coils that uncurl as they grow.

They bore lateral, reniform sporangia, branched dichotomously, and grew at the ends by unrolling (circinate vernation).

Roughly 20 to 40 percent of the men with the disease develop penile lesions called balanitis circinata (circinate balanitis).

Circinate vernation is also typical of the carnivorous plant family Droseraceae, for example see this photo of Drosera filiformis.

Circinate balantitis (also known as balanitis circinata) is a serpiginous annular dermatitis associated with Reiter's syndrome.

Patients can also present with mucocutaneous lesions, as well as psoriasis-like skin lesions such as circinate balanitis, and keratoderma blennorrhagicum.

It has many unusual relict characteristics not found in most other Drosera species, including woody rhizomes, operculate pollen, and the lack of circinate vernation in scape growth.

Many fern fronds are initially coiled into a "fiddle-head" or "crozier" (see circinate vernation) although cycad and palm fronds do not have this type of vernation.

The scapes emerge vertically, lacking the circinate vernation of its leaves and all other scapes of the genus Drosera, with the exception of D. arcturi.

Obermeyer noted the unusual characteristics that set D. regia apart from any other Drosera species: the operculate pollen, circinate leaf vernation, undivided styles, and woody rhizomes.

The 20- to 40-cm (8- to 16-in) glandular leaves, which uncoil from a central rosette, lack the power of movement common to most sundews, but have the unusual characteristic of coiling 'outward' when immature (outward circinate vernation).

A species of sundew, it is unusual within its genus in that the long, erect, filiform (thread-like) leaves of this plant unroll in spirals - an arrangement similar to the circinate vernation seen in Ferns.