Key to Tasmanian Dicots
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Sphaerocionium applanatum (formerly known as Aptopteris applanata; Hymenophyllaceae)

 
Sphaerocionium applanatum is the only member of this genus in Tasmania. It is an uncommon native rainforest epiphyte. Like all filmy ferns, the leaf laminas are only one cell thick, but in this species are densely covered in hairs so the leaves look quite thick and are not translucent. It typically grows on the trunks of Athrotaxis species, especially King Billy Pine.
 

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Contact: Greg.Jordan@utas.edu.au