Abstract
We provide a check list of the vascular plants of Theog Forest Division, Himachal Pradesh, Western Himalaya. Himachal Pradesh has been extensively surveyed in terms of flora by a large number of workers, albeit highly confined to prioritized areas. The floristic inventorization resulted in a total of 442 vascular plant species belonging to 311 genera and 117 families from an area of 512 km 2 . Out of these, 408 species belonged to Angiosperms, 7 to Gymnosperms and 27 to Pteridophytes. The predominant families among Dicotyledons were Asteraceae, Rosaceae and Lamiaceae. Among the Monocotyledons, the most represented family was Poaceae, followed by Liliaceae and Cyperaceae. Pinaceae and Pteridaceae were found to be the most represented families among the Gymnosperms and Pteridophytes, respectively. Species richness was highest in shrubberies, which formed an ideal habitat for many herbaceous species within different habitat types. Strategic eradication of weed species, especially obnoxious species such as Lantana camara and Parthenium hysterophorus is required for effective management in the area.
Highlights
The Indian Himalayan Region (IHR) comprises five bio-geographic zones including Trans, North-West, West, Central and East Himalaya (Rodgers and Panwar 1988), and supports more than 18,440 species of flowering plants – out of which 25 % are endemic to the region, covering an area of ca. 419,873 km2 (Singh and Hajra 1996; Samant et al 1998)
Himachal Pradesh has been regarded as a veritable emporium of plant resources, rich in medicinal and aromatic plants (Chauhan 1999, 2003)
A total of 442 vascular plants belonging to 312 genera and 97 families, were collected and recorded
Summary
The Indian Himalayan Region (IHR) comprises five bio-geographic zones including Trans, North-West, West, Central and East Himalaya (Rodgers and Panwar 1988), and supports more than 18,440 species of flowering plants – out of which 25 % are endemic to the region, covering an area of ca. 419,873 km (Singh and Hajra 1996; Samant et al 1998). The state is a rich repository of plant wealth and has been extensively surveyed in terms of flora by a large number of workers (Chauhan 1999, 2003). The floristics and the vegetation of the state are broadly known through a number of studies (Collett 1902; Champion and Seth 1968; Nair 1977; Chowdhery and Wadhwa 1984; Aswal and Mehrotra 1994; Chauhan 1999; Dhaliwal and Sharma 1999; Kaur and Sharma 2004). 804 km with an elevational range of 600–3500 m and reported 1326 species of flowering plants belonging to 113 families Collett (1902) collected plants from Shimla and adjacent areas in 1885, covering an area of ca. 804 km with an elevational range of 600–3500 m and reported 1326 species of flowering plants belonging to 113 families
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