sudhansu sekhar dash paramjit singh (6 résultats)

Hardcover. Etat : As New. Contents: Preface. Introduction. 1. Studies on genus Impatiens in India. 2. Area of study. 3. Vegetation. 4. Habitat diversity. 5. Distribution. 6. Morphology. 7. Scanning electron microscope (SEM) studies of pollen. 8. Classification. 9. Evolution, phylogeny. 10. Cytology. 11. Phytogeographical affinities and endemism. 12. Economic importance. 13. Major threats. 14. Conservation measures. 15. Scheme of presentation. 16. Taxonomic treatment. Appendices. References. Index of botanical names. Impatiens, commonly known as Balsams or Jewelweeds belong to the family Balsaminaceae are annual and perennial herbs. The genus with more than 1000 species mainly distributed in Africa. North America, India, Sino-Himalayan region and SE Asia. The plants are mainly succulent, and with beautiful flowers, one of the prized horticultural valued plant. In India, the genus is represented with around 249 species out of which 177 species are endemic, with highest concentrations in two hotspots of India, i.e. Eastern Himalaya and Western ghats. Eastern Himalaya with diverse climatic conditions, varied topography and ecosystem diversity is known as a centre of primary diversification of the genus Impatiens. The present book Balsams of Eastern Himalaya-A regional revision presents the detailed taxonomic account of 84 taxa, of which 43 taxa from Arunachal Pradesh, 24 species from Sikkim. The book is supplemented with detailed description, photo-plates showing the details of the habit, floral parts, and also a key based on the field characters for easy identification. This work is first of its kind in the genus Impatiens L. from Eastern Himalaya and will be useful to a wider audience. (jacket).

Hardcover. Etat : New. 1st Edition. Contents: I. introduction: 1. Nicobar Islands. 2. Great Nicobar Island. 3. People of the Nicobar Archipelago. 4. Geology and soil. 5. Climate. 6. Earlier botanical history. 7. Study area. 8. Vegetation. 9. Plan of work. II. Analysis of the Flora: 10. Dominant families. 11. Diversity of life forms. 12. New discoveries. 13. Endemics texa. 14. Ethnobotanical uses. 15. Factors affecting vegetation. 16. Suggestions for conservation. III. Systematic treatment: 17. Key to families. 18. Enumeration of flora. IV. References. V. Index to scientific names.

Hardcover. Etat : As New. Contents: Foreword. I. Introduction. 1. Area Aad Physiography. 2. Topography. 3. Drainage. 4. Geology. 5. People and culture. 6. Religious beliefs and practices. 7. Climate. 8. Botanical history. II. Vegetation: 1. Primary forest. 2. Tropical forest. 3. Sub-Tropical forest. 4. Broad-leaved temperate forest. 5. IV. Cool temperate (Coniferous) forest. 6. Subalpine and alpine forest. 7. Secondary forest. III. Salient features of flora of Kurung Kumey. IV. Endemics and occurrence of primitive angiosperms. V. Phytogeographic significance. VI. Plant resources. VII. Threats and management options. VIII. Presentation of the flora. References. Dicotyledons and plates. Key to the families (Dicotyledons). Systematic enumeration dicotyledons. Monocotyledons and plates. Key to the families (Monocotyledons). Systematic enumeration monocotyledons. Index to the botanical names. The present book "Flora of Kurung Kumey District, Arunachal Pradesh" provides the concise floristic account of 1321 plant species belongs to 586 genera and 146 families of flowering plants with identification keys based on field characters. The book will not only fill the gap in knowledge about the flora of the district, but also will be useful to identify wide range of plants in the North-Eastern region of our country.

Hardcover. Etat : New. Contents: Part I: Photo plates. Introduction. References. Enumeration. Part II: Photo plates. Enumeration. Index to family. From the preface: The Himalayas, literally meaning as abode of snow , is a 2500 km long arc shaped mountain range which is not only jewelled with snow-clad peaks and glaciers, but also wide extended lush-green forests harbouring one of the most biodiversity rich regions on the earth. The entire Himalaya has also been included amongst 35 Global biodiversity Hotspots. The diverse ecosystems of Himalaya are not only not only present beautiful landscapes, but also play important role in global atmospheric circulation, the hydrological cycle, and water resources availability, and provide a wide range of ecosystem services to the local inhabitants. A comprehensive information on the plant diversity particularly on taxonomy, correct identity and distribution is need of the hour. The information is provided in two parts. All the families are arranged alphabetically. The part 1 deals from family Acanthaceae to Nymphaeaceae while the part 2 deals from family Nyssaceae to Zingiberaceae. The valid names are given in bold while the basionyms of synonyms were given in italics. The checklist divided into dicotyledons and monocotyleds, families within groups, genera within families and species and infra-specific taxa within genera are arranged alphabetically under each genus for the sake of convenience; in the end of the text a index to the family names is also included.

Hardcover. Etat : New. 1st Edition. Contents: 1. Introduction. 2. Results and discussion. 3. Taxonomic treatment. 4. Bibliography. 5. Index to families. The Mahatma Gandhi Marine National Park, more popularly known as the Labyrinth Islands, is renowned for its luxuriant coastal, mangrove, tropical evergreen forests, and marine vegetation. The book Angiosperm Diversity of Mahatma Gandhi Marine National Park, South Andaman, India deals with different species of flowering plants comprising of 762 species of dicotyledons and 248 species of monocotyledons with 15 illustrations and 144 photographs. The book also identifies the endemic species; provides specific information on local uses of the plants, distribution patterns in the Islands; different threats to biodiversity and suggesting conservation measures. I hope this book provide a comprehensive picture of the floristic richness and will be of appreciable use to students and researchers in the field of botany and forestry.

Hardcover. Etat : New. 1st Edition. Contents: Preface. 1. Introduction. 2. Brief historical background. 3. Morphological diversity. 4. Classification. 5. Diversity and distribution. 6. Analysis of orchid flora. 7. Presentation of the text and photographs. 8. Systematic enumeration and photographs. 9. Excluded taxa. 10. Generic name meaning. References. Index. Addendum. The book 'Orchids of India - A pictorial guide' presents an updated census of Indian orchids with updated nomenclature, synonyms and supplemented with photographs for help in identification. A total of 1256 taxa under 155 genera have been listed. The book depicts a concise history of orchid research in India, morphological diversity with illustrative photo plates, detailed recent classification followed by a brief analysis on distribution of orchids in different phytogeographic regions in India. This book is the first ever comprehensive census cum pictorial guide of Indian orchids, where each species has been provided with correct name, protologue citation, basionym, synonyms and their citation, life form phenology, altitude and global distribution. The book also provides more than photographs of 775 species showcasing the diversity of Orchids in India. All the information provided in the present book is based on methodical research by experienced scientists. This comprehensive and authentic inventory of Indian orchids would certainly be useful for students, researchers, amateurs, hobbyists, orchid growers, nature lovers, conservationists and policy makers and will be utilized by a wide array of people of our country from diverse background. (jacket).