Flora: India
Flora, 1911
This article was written around 1911 when conditions were Readers will be able to edit existing articles and post new articles |
Extracted from:
Encyclopaedia of India
1911.
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Extracted from: Encyclopaedia of India 1911.
Unlike many other large geographical areas, India is remarkable for having no distinctive botanical features peculiar to itself. It differs conspicuously in this respect from such countries as Australia or South Africa. Its vegetation is in point of fact of a composite character, and is constituted by the meeting and more or less blending of adjoining floras, - those of Persia and the south-eastern Mediterranean area to the north-west, of Siberia to the north, of China to the east, and of Malaya to the south-east. Regarded broadly, four tolerably distinct types present themselves.
I. The upper levels of the Himalayas slope northwards gradually to the Tibetan uplands, over which the Siberian temperate vegetation ranges. This is part of the great temperate flora which, with locally individualized species, but often with identical genera, ranges over the whole of the temperate zone of the northern hemisphere. In the western Himalayas this upland flora is marked by a strong admixture of European species, such as the columbine (Aquilegia) and hawthorn (Crataegus Oxyacantha). These disappear rapidly eastward, and are scarcely found beyond Kumaon. The base of the Himalayas is occupied by a narrow belt forming an extreme north-western extension of the Malayan type described below. Above that there is a rich temperate flora which in the eastern chain may be regarded as forming an extension of that of northern China, gradually assuming westwards more and more of a European type. Magnolia, Aucuba, Abelia and Skimmia may be mentioned as examples of Chinese genera found in the eastern Himalayas, and the tea-tree grows wild in Assam. The same coniferous trees are common to both parts of the range. Pinus longifolia extends to the Hindu-Kush; P. excelsa is found universally except in.
Sikkim, and has its European analogue in P. Peuce, found in the mountains of Greece. Abies smithiana extends into Afghanistan; Abies webbiana forms dense forests at altitudes of 8000 to 12,000 ft., and ranges from Bhutan to Kashmir; several junipers and the common yew (Taxus baccata) also occur. The deodar (Cedrus Deodara), which is indigenous to the mountains of Afghanistan and the north-west Himalaya, is nearly allied to the Atlantic cedar and to the cedar of Lebanon, a form of which is found in Cyprus. A notable further instance of the connexion of the western Himalayan flora with that of Europe is the holm oak (Quercus Ilex), which is characteristic of the Mediterranean region.
2. The north-western area is best marked in Sind and the Punjab, where the climate is very dry (the rainfall averaging less than 15 in.), and where the soil, though fertile, is wholly dependent on irrigation for its cultivation. The flora is a poor one in number of species, and is essentially identical with that of Persia, southern Arabia and Egypt. The low scattered jungle contains such characteristic species as Capparis aphylla, Acacia arabica (babul), Populus euphratica (the " willows " of Ps. cxxxvii. 2), Salvadora persica (erroneously identified by Royle with the mustard of Matt. xiii. 31), tamarisk, Zizyphus, Lotus, &c. The dry flora extends somewhat in a south-east direction, and then blends insensibly with that of the western peninsula; some species representing it are found in the upper Gangetic plain, and a few are widely distributed in dry parts of the country.
3. For the Malayan area, which Sir Joseph Hooker describes as forming " the bulk of the flora of the perennially humid regions of India, as of the whole Malayan peninsula, Upper Assam valley, the Khasi mountains, the forests of the base of the Himalaya from the Brahmaputra to Nepal, of the Malabar coast, and of Ceylon," see AssAM, Ceylon and Malay Peninsula.
4. The western India type is difficult to characterize, and is in many respects intermediate between the two just preceding. It occupies a comparatively dry area, with a rainfall under 75 in. In respect to positive affinities, Sir Joseph Hooker pointed out some relations with the flora of tropical Africa as evidenced by the prevalence of such genera as Grewia and Impatiens, and the absence, common to both countries, of oaks and pines which abound in the Malayan archipelago. The annual vegetation which springs up in the rainy season includes numerous genera, such as Sida and Indigofera, which are largely represented both in Africa and Hindustan.
Palms also in both countries are scanty, the most notable in southern India being the wild date (Phoenix sylvestris); Borassus and the coco-nut are cultivated. The forests, though occasionally very dense, as in the Western Ghats, are usually drier and more open than those of the Malayan type, and are often scrubby. The most important timber trees are the tu'n (Cedrela Toona), sdl (Shorea robusta), the present area of which forms two belts separated by the Gangetic plain; satin wood (Chloroxylon Swietenia), common in the drier parts of the peninsula; sandalwood, especially characteristic of Mysore; iron-wood (Mesua ferrea), and teak (Tectona grandis). Mammals. - First among the wild animals of India must be mentioned the lion (Felis leo), which is known to have been not. uncommon within historical times in Hindustan proper and the Punjab. At present the lion is confined to the Gir, or rocky hill-desert and forest of Kathiawar. A peculiar variety is there found, marked by the absence of a mane; but whether this variety deserves to be classed as a distinct species, naturalists have not yet determined. These lions at one time were almost extinct, but after being preserved since about 1890 by the Nawab of Junagarh, they have once more become comparatively plentiful. A good lion measures from 9 to 92 ft. in length.
21st century: new species
148 species of plants completely new to science discovered in India
India Today, Akash Vashishtha, New Delhi, June 10, 2015
According to current estimates, India has 11.4 per cent of the total recorded floral species in the world.
148 new species of plants have been discovered by the Botanical Survey of India (BSI).
While these 148 species are altogether new to science, scientists at the BSI have also discovered 19 new varieties (sub-species) during 2014-15.
Besides, 101 species have been recorded for the first time in India.
While 114 novelties (new traits in a plant species) were described and published by scientists at the BSI, those from other institutes reported 164 novelties during 2014. Seed plants contributed the maximum with 42 per cent of the total discoveries followed by fungi at 19 per cent. Microbes contributed to 13 per cent of the new findings, while lichens had 12 per cent. Algae formed 9 per cent of the total new species while pteridophytes and bryophytes contributed to 2 and 3 per cent, respectively.
Region-wise, most of the new species were discovered in Western Ghats, which accounted for 22 per cent of the total discoveries made, followed by Eastern Himalaya at 15 per cent. The North-East India contributed to 15 per cent of the total discoveries (see New Taxa of Botanical Survey of India, Shillong )while Andaman and Nicobar Islands shared 13 per cent of the new species found. About 11 per cent of the new findings were recorded from Peninsular India, followed by Western Himalaya with 9 per cent.
The Gangetic Plains, Eastern Plains and Central India, collectively, contributed to 10 per cent of the total new discoveries of 2014.
According to the current estimates of BSI, India has about 11.4 per cent of the total recorded floral species in the world. "We are in the process of identifying several new species. But the existing floral biodiversity is under severe threat from human factors like urbanisation, industrialisation, pollution, destruction of habitats, overgrasing and deforestation among others," said a senior scientist at the BSI.
