Tmesipteris truncata

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Fork fern
Tmesipteris truncata Turramurra.jpg
Turramurra, Australia
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Psilotales
Family: Psilotaceae
Genus: Tmesipteris
T. truncata
Binomial name
Tmesipteris truncata
  • Tmesipteris oblanceolata Copel.
  • Psilotum truncatum R.Br.

Tmesipteris truncata is a fern ally endemic to eastern Australia. The habitat of this primitive plant is under waterfalls, or in sandstone gullies or rainforests. Commonly referred to as a Fork Fern. It is often found growing on the base of the King Fern. Usually seen as an epiphyte or lithophyte, but it may also appear as a terrestrial plant. Found as far south as Mount Dromedary.

The stems are 15 to 30 cm long, mostly unbranched. Three or four grooves are at the base. The leaves grow shorter at the base, also shorter at the apex of the stems. Leaves are narrow linear to oblong in shape; 15 to 25 mm long, 2 to 5 mm wide. The midvein of the leaf ends in a thin point. Synangia are 3 to 5 mm long. [1]

The specific epithet truncata refers to the leaf tops, which appear abruptly cut off. [2] This plant first appeared in scientific literature in 1810 as Psilotum truncatum in the Prodromus Florae Novae Hollandiae , authored by the prolific Scottish botanist, Robert Brown.

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  1. "Tmesipteris truncata, PlantNET - NSW Flora Online, Retrieved July 22nd, 2011".
  2. Les Robinson - Field Guide to the Native Plants of Sydney, ISBN   978-0-7318-1211-0 page 303