English: Australian brake; Tender brake; Tender brakefern; Shaking brake.
Name: specific epithet tremula is the Latin, meaning tremulous or shaking.
Clades:
Pteridoideae;
Pteridaceae.
Genus: ± 300 species, 7 found in Australia.
Region: eastern Australia, New Zealand, Tasmania, Lord Howe, Norfolk Island, Kermadec Islands, Fiji; naturalized in Argentina.
Habitat: shady, sheltered areas and forests; wet sclerophyll and rainforest.
Ecology: hyperaccumulating arsenic.
Content: two cytotoxic indanonic sesquiterpenes.
Use: ornamental, can become weedy.
BotanyFern; terrestrial; fast-growing; 1 to 2 m high.
Root: rhizome erect, tufted, covered with narrow brown scales; stipe brown.
Leaves: pale, light green; lacy; up to 2 meters long; 3-pinnate or more.
Sori: brownish; line the undersides margins.