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Vegetation
ANIMALS BIRDS BUTTERFLIES HERPETOFAUNA VEGETATION FLORISTICS MEDICINAL PLANTS

Tropical evergreen and semi evergreen forests constitute 74.6% of the total area of Periyar Tiger Reserve, followed by moist deciduous forests that form 12.7% and grasslands which are 1.5% and eucalyptus come under 7.1% of the area. Periyar Lake constitutes the rest of the area i.e., 3.5%.

Floral diversity
Angiosperms 1966 Spp.
Gymnosperms 3 Spp.
Pteridophytes 170 Spp.
Medicinal Plants 350 Spp.

Pectelis gigantea
-a threatened ground orchid
Endemic Plants of PTR
1 Mucuna pruriens thekkadiensis
2 Habenaria periyarensis
3 Syzygium periyarensis

1
West coast tropical evergreen forests

Vateria indica, Cullenia exarillata, Hopea parviflora, Canarium strictum, Thottea siliquosa, Calamus vattayila, Gnetum ula, Impatiens parasitica etc.

2
West coast semi-evergreen forests
Artocarpus hirsutus, Bischofia javanica, Myristica dactyloides, Psychotria thwaitessii, Strobilanthus ciliatus, Jasminum flexile, Mucuna hirsuta etc.
3
Southern moist mixed deciduous forests
Tectona grandis, Dalbergia latifolia, Grewia tiliifolia, Pterocarpus marsupium, Lagerstroemia microcarpa, Desmodium pulchellum, Helicteres isora, Pavetta indica etc.
4
Southern hilltop tropical evergreen forests
Syzygium gardneri, Litsea oleoedes, Hydnocarpus alpina, Drypetes wightii, Actinodaphne bourdilloni, Agrostistachys borneensis, Amomum muricatum etc.
5
Southern montane wet temperate forests
Actinodaphne campanulata, Rhododendron arboreum, Vernonia travancorica, Garcinia cowa, Syzygium parameswaranii, Symplocos pulchra ... etc.
6
South Indian sub-tropical hill savannahs
Terminalia chebula, Careya arborea, Phyllanthus emblica, Themeda cymbaria, Chrysopogon hackelii etc.
7
Southern wet montane grasslands
Phoenix loureirii, Strobilanthus kunthianus, Hypericum mysorense, Arundinella ciliata, Tripogon bromoides etc.

 

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