Rock Fern - Cheilanthes austrotenuifolia

''Cheilanthes austrotenuifolia'' is a species of Australian rock fern from the family Pteridaceae. Once a common understory plant along streams in moist areas of Southern Australia, ''Cheilianthes austrotenuifolia'' is still quite widespread in remnant bush-land, such as areas of the Adelaide Hills, although it has been affected significantly by land clearance and competition from invasive species.