Lindsaea linearis Sw.

Common Name and Etymology

Lindsaea linearis Sw. is commonly called the screw fern, named for the potential twisting appearance of its fronds.

Stem and Frond Size

It has a creeping dark stem, and its fronds can reach up to 50 cm (20 inches) in length.

Geographic Distribution

This small fern has a widespread distribution across many regions of Australia, and also occurs in New Zealand and New Caledonia.

Habitat Preferences

It grows in a range of habitats, most often near swamps, other moist areas, rocks, heathland, or open forest.

Distinguishing Features

It can be distinguished from the similar necklace fern by its dark stem; the necklace fern has a green stem.

Taxonomic History

The species was first described by Swedish botanist Olof Swartz in 1801, and it retains its original scientific name.

Recognised Varieties

Two varieties are currently recognised: Lindsaea linearis var. linearis and Lindsaea linearis var. cuneata.