Lygodium microphyllum Cav. R.Br.
Old World Climbing Fern, Small Leaf Climbing Fern
Lygodium scandens (L.), Ugena microphylla Cav. R.Br.
Old World climbing fern, Lygodium microphyllum, is a large and
distinctive ground-to-crown climbing fern species. It has long
climbing, stem-like fronds (= leaves) and wiry brown rhizomes.
Fronds spread along the ground, overgrow shrubs, and also climb up
and overgrow trees and other structures by twining around them. The
rhizomes can accumulate to form dense (1 m or more) mats on the
ground. The leaflets (pinnules) are of two types: non-reproductive
leaflets are unlobed along their margins, and oblong to lanceolate
(pointed); reproductive leaflets (see below) have tiny lobes along
their margins covering the sporangia