Flora
Sahyadri Tiger Reserve is one of the most floristically diverse protected areas in the northern Western Ghats, harbouring an impressive 1,452 species of plants. The reserve’s remarkable floral richness is a result of its wide altitudinal range, high annual rainfall, varied topography, and diverse habitats, which include tropical evergreen forests, semi-evergreen forests, moist deciduous forests, montane forests, riparian forests, grasslands, and lateritic rocky plateaus. These varied ecosystems support an extraordinary diversity of plant life and form the foundation of the reserve’s ecological integrity.
The forests are dominated by a rich assemblage of native tree species that provide essential ecosystem services, including soil and water conservation, carbon sequestration, nutrient cycling, and habitat for wildlife. The reserve is particularly renowned for its abundance of fruit-bearing trees, which ensure year-round food availability for a wide range of animals, including hornbills, pigeons, bulbuls, barbets, fruit bats, macaques, langurs, sloth bears, civets, squirrels, and many other mammals and birds. Important fruit-bearing species include Zizyphus rugosa, Ficus racemosa, Ficus arnottiana, Sideroxylon tomentosum, Acacia concinna, Terminalia chebula, Terminalia bellirica, Phyllanthus emblica (Emblica officinalis), Vangueria spinosa, and Carissa congesta. The continuous availability of fruits throughout the seasons plays a vital role in sustaining wildlife populations and facilitates seed dispersal, thereby supporting natural forest regeneration.
Equally important are the reserve’s fodder species, which provide forage for wild herbivores such as gaur, sambar, barking deer, mouse deer, and wild pig. Species such as Karvi (Strobilanthes callosa), Bamboo, and Kumbal are widely distributed across suitable habitats and contribute significantly to the productivity of the forest ecosystem. The periodic mass flowering of Karvi, which occurs once every several years, is a remarkable ecological phenomenon that attracts a variety of pollinators and influences forest dynamics.
The reserve is also recognized for its exceptional botanical diversity. Floristic surveys have recorded 37 species of orchids, 59 climber species, 41 fern species, 123 herb species, more than 34 shrub species, 77 grass species, and 8 species belonging to the endemic genus Ceropegia. These groups occupy a wide range of ecological niches, from dense evergreen forests and riparian habitats to open grasslands and lateritic plateaus. The high diversity of orchids, ferns, and climbers reflects the humid climatic conditions and relatively undisturbed nature of the forests.
Sahyadri Tiger Reserve is an important centre of plant endemism in the Western Ghats. Botanical studies have documented 206 endemic plant species that are restricted to this globally recognised biodiversity hotspot, along with 60 threatened species listed under various conservation categories. The reserve therefore plays a crucial role in safeguarding rare and geographically restricted flora that are vulnerable to habitat loss and climate change. Many endemic species are associated with specialised habitats such as lateritic plateaus, rocky escarpments, and evergreen forest patches, making the conservation of these habitats particularly important.
Representative plant species recorded from the reserve include Oberonia recurva, Habenaria crassifolia, Moullava spicata, Piper malamiris, Adiantum philippense, Tectaria coadunata, Chlorophytum glaucoides, Smithia hirsuta, Zingiber neesanum, Carissa inermis, Grewia umbellifera, Syzygium salicifolium, Memecylon talbotianum, Ceropegia bulbosa, and Ceropegia jainii. Many of these species are characteristic of the Western Ghats and contribute to the region’s outstanding botanical significance.
The rich floral diversity of Sahyadri Tiger Reserve supports intricate ecological interactions involving pollination, seed dispersal, nutrient cycling, and habitat formation. It provides food, shelter, and breeding sites for a vast array of insects, amphibians, reptiles, birds, and mammals, thereby sustaining the reserve’s rich biodiversity. As one of the northernmost strongholds of the Western Ghats’ unique flora, Sahyadri Tiger Reserve serves as an invaluable repository of plant genetic resources and remains a priority landscape for long-term biodiversity conservation, ecological research, and climate resilience.