Tmesipteris
Tmesipteris, the hanging fork ferns, is a genus of ferns, one of two genera in the family Psilotaceae, order Psilotales.
Tmesipteris is restricted to certain lands in the Southern Pacific, notably Australia, New Zealand and New Caledonia.
In New Zealand this hanging epiphyte is common in the warm temperate rain forests of both main islands, where it can normally be found as short spiky dark-green fronds, often with lighter bag-like sporangia at the bases of some of its "leaves". The plant possesses no true leaves; what appear to be leaves are flattened stems. The fronds emerge directly from the fibrous root-mats which clad the trunks of mature tree ferns such as Dicksonia and Cyathea. Tmesipteris is from the Greek language, meaning a "cut fern", referring to the truncated leaf tips.
Taxonomy
The Smith et al. classification of 2006, based on molecular phylogeny, placed Tmesipteris in Psilotaceae. Subsequent classifications have maintained this placement.Species
Species include:- Tmesipteris alticola Perrie & Brownsey
- Tmesipteris elongata P.A.Dang - Australia and New Zealand
- Tmesipteris gracilis Chinnock 2003
- Tmesipteris horomaka Perrie, Brownsey & Lovis - New Zealand
- Tmesipteris lanceolata P.A.Dang. - New Caledonia and New Zealand
- Tmesipteris norfolkensis P.S.Green
- Tmesipteris obliqua Chinnock
- Tmesipteris oblongifolia A.F.Braithw. 1986
- Tmesipteris ovata N.A.Wakef.
- Tmesipteris parva N.A.Wakef.
- Tmesipteris sigmatifolia Chinn. - New Caledonia and New Zealand
- Tmesipteris solomonensis Braithwaite 1973
- Tmesipteris tannensis Bernh. - New Zealand
- Tmesipteris truncata Desv. - Australia
- Tmesipteris vanuatensis Braithwaite 1986
- Tmesipteris vieillardii P.A.Dang - New Caledonia
- Tmesipteris zamorae Gruèzo & Amoroso, 2012 - Philippines