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Lianas in India
Mixed species tangle of lianas in Tropical Australia.
Lianas Udawattakele
Lianas in Udawattakele, Sri Lanka
Monkey Ladder Vine canopy
A canopy of Entada gigas that has formed over a monkey ladder vine (Bauhinia glabra) on Kauai, Hawaii.
Liana tangle across a forest in the Western Ghats

A liana is any of various long-stemmed, woody vines that are rooted in the soil at ground level and use trees, as well as other means of vertical support, to climb up to the canopy to get access to well-lit areas of the forest. Lianas are characteristic of tropical moist deciduous forests (especially seasonal forests), but may be found in temperate rainforests. There are also temperate lianas, for example the members of the Clematis or Vitis (wild grape) genera.

Lianas can form bridges amidst the forest canopy, providing arboreal animals with paths across the forest. These bridges can protect weaker trees from strong winds. Lianas compete with forest trees for sunlight, water and nutrients from the soil. Forests without lianas grow 150% more fruit; trees with lianas have twice the probability of dying.

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