||In general 514 have been identified species of trees and plants with the dominant type of family Dipterocarpaceae, Euphorbiaceae, Lauraceae, Myrtaceae, Fagaceae, Annonaceae, and Meliaceae. Besides, there are at least 15 species of bamboo from 5 (five) genera, namely Bambussa, Dendrocalamus, Dinochloa, Gigantochloa, and Schizatochyum, 26 types of rattan and 126 species of orchids from 59 genera, some of which have been cultivated, including the moon orchid (Phalaenopsis amabilis) orchid necklace (Coelogyne dayana), and pigeon orchid (Dendrobium crumenatum).
From the inventory of 157 species of plants in Bukit Barisan Selatan National Park can be used as medicinal plants, such as pasak bumi (Eurycoma longifolia), and pulai (Alstonia scholaris). This National Park is also a habitat for unique flowering plants, rare and still in the process of evolution, the rafflesia (Rafflesia sp) and 2 (two) types of Amorphophallus titanum and Amorphophallus deculsilvae
Common vegetations found in wetlands and coastal areas are Terminalia cattapa, Hibiscus sp, Baringtonia asiatica, Callophyllum inophyllum, Casuania sp, Pandanus sp, and Ficus septica.
The lowland rain forest is dominated by Shorea sp, Dipterocarpus sp, and Hopea sp, with lower plant species including Urophyllum sp, Phrynium sp, Korthalsi sp, and Calamus sp.
The hill forest is dominated by the Dipterocarpaceae, Lauraceae, Myrtaceae, and Annonaceae family with Neolitsea cassianeforia, Psychotria rhinocerotis, Areaca sp, and Globba pendella.
The lower mountain rainforests are inhabited by species of the Lauraceae, Myrtaceae, Dipterocarpaceae and Fagaceae families, such as Magnolia sp, Quercus sp, and Garcinia sp. While the high mountain rain forest is dominated by Eugenia sp, and Castanopsis sp.
The sea weed species are found on the southern coast of Sumatra, such as Sargasum gracillum, S. echinocarpum, Acanthopora specifesa, Hypnea musciformis, and Turbinaria ornata, while sea weed Thallasis sp species live along the bay of Belimbing.
This national park area is also an important habitat for various types of plants that have tardisional utilization, such as the type of resin producer of cat’s eye resin (Shorea javanica), damar stone (S. Ovalis), and jelutung (Dyera costulata). In addition there are 11 Sumatran endemic flora, namely Bacaurea multiflora, Madhuca magnifolia, Memecylon multiflorum, Drypetes subsymetrica, Drypetes simalurensis, Ryparosa multinervosa and others.
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