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Gnetum africanum may also be known as G. buchholzianum, and is one of the two vine species from the Gnetum genus that grown in Africa. [12] There are currently no gene banks for Gnetum africanum, but approximately 19 varieties of the species have been planted in Cameroon’s Limbe Botanic Garden to begin a gene bank.
Tropical rainforest covers around 8% of the island, but used to encompass more than twice as much. It ranges from sea level to 2,750 m (9,020 ft) elevation and is mainly found on the eastern plateaus, on basement rocks with lateritic soils. In the north, humid forest extends west to the Sambirano river basin and islands including Nosy Be. [17]
A liana is a long-stemmed woody vine that is rooted in the soil at ground level and uses trees, as well as other means of vertical support, to climb up to the canopy in search of direct sunlight. [1] The word liana does not refer to a taxonomic grouping, but rather a habit of plant growth – much like tree or shrub .
Rainforests and vine thickets typically: [1] are closed-canopy forests, generally with 70% or greater foliage cover. are characterised by trees with dense, horizontally or obliquely-held foliage in the upper layers. are described in terms of leaf size: mesophyll – more than 12.5 cm long (45 – 100 cm 2), e.g. tropical rainforest
Borneo rainforest. Some tropical forest types are difficult to categorize. While forests in temperate areas are readily categorized on the basis of tree canopy density, such schemes do not work well in tropical forests. [1] There is no single scheme that defines what a forest is, in tropical regions or elsewhere.
The Hawaiian tropical rainforests are a tropical moist broadleaf forest ecoregion in the Hawaiian Islands. They cover an area of 6,700 km 2 (2,600 sq mi) in the windward lowlands and montane regions of the islands. [1] Coastal mesic forests are found at elevations from sea level to 300 m (980 ft). [2]
Amazon River rain forest in Peru. Tropical rainforests are hot and wet. Mean monthly temperatures exceed 18 °C (64 °F) during all months of the year. [4] Average annual rainfall is no less than 1,680 mm (66 in) and can exceed 10 m (390 in) although it typically lies between 1,750 mm (69 in) and 3,000 mm (120 in). [5]
Found throughout tropical Asia and the Pacific. This individual apparently in India. 4,900 feet (1.5 km) estimate. [1] [better source needed] This species can also be up to three feet (0.91 meters) thick and is therefore also one of the most massive of vines, and for that matter of all plants. [citation needed]