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Pleione 6(1): 81 - 86. 2012. © East Himalayan Society for Spermatophyte Taxonomy ISSN: 0973-9467 Ethnoecology of Indian Ephedras Rita Singh and Pragya Sourabh School of Environment Management, GGS Indraprastha University, Dwarka 16C, New Delhi 110 075, India E-mails: [email protected] (Corresponding author) & [email protected] Revised 16.05.2012; Accepted 18.05.2012 Abstract Present investigation documents the ecological and economical uses of Ephedra Tournefort ex Linnaeus (Ephedraceae) in India. Ephedra is known locally in the region of its occurrence as Soma or Somlata. All the species of Ephedra act as soil binder and enrich the soil in which they grow with silica. The dried resinous pith yields a number of alkaloids used in medicines. The fruit and fleshy bracts are edible. Key words: Somalata, Ephedra, silica, alkaloids INTRODUCTION Medicinal plant research is regaining its frequency, as synthetic drug research may not lead to the creation of all needed drugs. Ethnobotanical approach to drug discovery incorporates the use of medicinal knowledge of indigenous societies living in the tropics into plant exploration and drug discovery. Indigenous people, who have lived with and used these plants for thousands of years, are excellent sources for medical information. Fossil records reveal that human use of plants as traditional medicine dated back to the middle Paleolithic age, approximately 60,000 years ago (Solecki & Shanidar 1975). Plants were used as flavouring agents, foods, insect deterrents, ornamentals, fumigants, spices and cosmetics (Pieroni et al 2004; Stanley et al 2001). Generally, the medicinally useful plants are sold as commodities in the market, and those that are sold for medicinal purposes dominate the market (Runner et al 2001). The World Health Organization estimated that over 80 % of the people in developing countries rely on traditional remedies such as herbs for their daily needs, and about 855 traditional medicines used crude plant extracts. This means that 3.5 to 4 billion of the global human population rely on plant resources for drugs (Jan et al 2009; Maridass & Britto 2008). Rapid destruction of forests in the tropical and subtropical regions has stimulated urgency towards ethnobotanical research. In this respect the knowledge of indigenous people and vernacular names are of immense use. The genus Ephedra Tournefort ex Linnaeus, also known as Soma or Somlata, which belongs to the family Ephedraceae, is unique gymnosperm due to its natural occurrence in hot as well cold deserts and has both ecological and economical significance. It is distributed throughout all continents except Australia. Ten species of Ephedra occur in India, namely E. foliata Boissier, E. gerardiana Wallich ex Stapf, E. intermedia Schrenk & C.A. Meyer, E. kardangensis P. Sharma & P.L. Uniyal, E. khurikensis P. Sharma & P.L. Uniyal, E. nebrodensis Tineo, E. saxatilis (Stapf) Royle ex Florin, E. regeliana Florin, E. sumlingensis P. Sharma & P. Uniyal and E. przewalskii Stapf. Ephedra is one of the few gymnosperms adapted to extreme aridity and has highly reduced plant body. All the species of Ephedra are almost similar in gross morphology, with decussate 82 Ethnoecology of Indian Ephedras reduced leaves and ovulate strobili, often with fleshy bracts and seeds with an inner integument and an outer envelope. The apical part of the inner integument is extended into a micropyler tube that serves for pollen reception. The male strobili consist of stalked microsporangia surrounded by a number of paired bracts. Historically, Ephedra is described as “Somalata” in Veda. Mythologically the juice of Ephedra, which was known as somrasa, was considered as a divine drink, offered to Gods. About 20 different plants have been identified as soma on the basis of morphological, biochemical and narcotic characteristics (Mahdihasan & Mahdi 1989). The description of the Soma plant can be traced out in Rig Veda, especially in the ninth Mandala and few more hymns in other Mandalas (Padhy & Dash 2004). Various religious groups, including Hindus and Parsees, used them in their ceremonies to produce feelings of exhilaration (Lee 2011). In Aryan custom soma was used as a natural restorative for health that makes the consumer awakened and alert. It was used as a drink for longevity which was given even to the newborn. MATERIALS AND METHODS Various species of Ephedra investigated in the present study are collected from the states of Rajasthan, Gujrat, Himachal Pradesh, Uttarakhand and Kashmir during repeated field visits. The collected Herbarium specimens are deposited at IPUH (Indraprastha University Herbarium) maintained at Biosystematics Lab, Guru Gobind Singh Indraprastha University, New Delhi. While doing extensive field surveys during 2001-2011, the spatial distribution and diversity of Ephedra in India was investigated. We also surveyed information on the traditional knowledge associated with the uses of different species of Ephedra in their indigenous area of occurrence. For ethnobotanical studies, semi-structured questionnaires were prepared, which included the queries on local name, uses, myths, legends associated with Ephedra. These questionnaires were used to interview indigenous people of all age groups as well as setlers from the adjoining areas of Nepal, Tibet, in Himachal Pradesh and Ladakh. In Rajasthan, however, only local residents were interviewed. The data collected are substantiated by photographic documentation. OBSERVATIONS AND DISCUSSION Eight species of Ephedra are reported from the Western Himalaya. All these species have diverse vernacular names in their regions of occurrence (Table 1). In Kinnaur, Lahul and Spiti in Himachal Pradesh, Ephedra intermedia is one of the dominant shrub-species in the barren landscape. They are generally associated with Artemisia dracunculus, Hippophae salicifolia, H. rhamnoides and spread across the slopes and act as soil binder. Besides these E. kardangensis, E. khurikensis and E. sumlingensis from Lahul and Spiti have been found to be associated with pines (Sharma et al 2010). Further in northwest they are replaced by Ephedra gerardiana, E. nebrodensis, and E. regeliana in Leh, Ladakh and Kashmir. In Leh, Ladakh E. regeliana forms herbaceous mat or cushions. All these western Himalayan species grow in arid zone and act as an important soil binder species due to their deep and proliferating rhizome. Therefore, the practice of harvesting the entire plant along with their root leads to soil erosion and ultimately the deterioration of the soil. Ephedra saxatilis occurs in moist gullies, slopes of Deoban in Chakrata, Uttarakhand. All the species of Ephedra enrich the soil with silica contents due to the presence of large quantity of phytolith in their overall biomass. Rita Singh & Pragya Sourabh Table 1. Vernacular names of Ephedra in localities of their occurrence Name E. foliata Boissier E gerardiana Wallich ex Stapf E. intermedia Schrenk & C.A. Meyer E. nebrodensis Tineo E regeliana Florin E. saxatilis (Stapf) Royle ex Florin Vernacular Name Kuchar Suaphogro, Andhokimp Tutgantha Somlata Omah, Umah Cho-Cho dugur Dewaria, Tutgantha 83 Place Punjab (Chopra et al 1931; Sahni 1990; Saxena 1979) Western Rajasthan (Chopra et al 1931; Sahni 1990; Saxena 1979) Jaunsar, Uttaranchal (Chopra et al 1931; Sahni 1990) Lahul and Spiti, Himachal Pradesh) (Chopra et al 1931) Baluchistan(Sahni 1990) Ladakh Garhwal, Uttaranchal (Sahni 1990) E. foliata is the only climber species that occurs in the hot arid deserts of Rajasthan and Gujrat. The smooth photosynthetic branches are an important source of forage for camel, sheep and goat. The white fleshy bracts and seeds of E. foliata also form an important component of nutrition for many animal and insect species surviving in nutrient poor habitat of Rajasthan (Singh et al 2007). The species which occurs in Leh, Ladakh, Himachal Pradesh and Uttarakhand have bright-red fleshy bracts which are sweet and rich in many amino acids (Vishin & Razdan 1962) and are generally used in arid regions for the preparation of jam. The crimson juicy bracts are also eaten by birds and rodents in Lahul and Spiti valley of Himachal Pradesh and Ladakh. They devour these bracts and help in the scattering and dispersal of the seeds in higher crevices of rocks and thus extend the altitudinal distribution of the species in Lahul and Spiti valley. Ephedra is known to all natives in Himalayan region and over a period of time its uses have been crystallized into traditional medicines by the indigenous people. Ephedrine and pseudoephedrine are dominant and most pharmacologically useful alkaloids isolated from the stems of Ephedra sp. (Singh et al 2007; Stanley et al 2001; Konno et al 1979), although the related alkaloids such as norephedrine and norpseudoephedrine (Grue & Spenser 1989), methylephedrine (Sagara et al 1983) are also present. The ephedrine extracted from E. regeliana from Ladakh is used as nasal drops. It is also used for the treatment of asthma and hay fever. The juice of the fleshy bracts is given to soothe the respiratory passage infections. Sometimes bracts are used as remedy for hay fever and seeds are used as cooling medicine (Gorsi & Miraj 2002). It is mixed with tobacco for the preparation of good quality of Naswar (Saadia et al 2009), however at some places the ash of the burnt plants is also mixed with tobacco and is used as sniff. The decoction of stem and roots of Ephedra is used as a remedy for rheumatism and syphilis. It is also used as diuretic, tonic and anti-asthmatic. The thin leafless branches are considered diaphoretic and antipyretic. The roots are used as a mild astringent and it is believed to lower the blood pressure and dilates the peripheral blood vessels. The rhizome and dry plants are used as fuel in the higher altitudes where the tree line recedes. We have observed that in Himachal Pradesh Ephedra intermedia is collected in huge quantities and stacked along the roadsides in deserted and abandoned regions of Pooh in Lahul from where it is illegally transported to Punjab (Amritsar) for further processing and isolation of ephedrine and other compounds. The yellow brown resin of fresh and young stem used to cure rashes of allergic origin in army barracks in Pooh region of Lahul and Spiti and acts as an antiseptic. We have found that the villagers of Himachal Pradesh and Ladakh know the use of the dried 84 Ethnoecology of Indian Ephedras Plate I: Fig. 1. Population of Ephedra growing on loose rocky soil slopes and acting as soil binder; Fig. 2. Population of Ephedra saxatilis having fleshy red bracts; Fig. 3. Longitudinally split intermodal region of stem showing the area containing resinous pith(p); Fig. 4. Open sun drying of Ephedra harvested from wild populations; Fig. 5. Gunny bags full of dried twigs of Ephedra ready for transport to the cities 1 2 3 4 5 Plate II: Female strobilus of different Ephedra species. Fig. 1. Fractured bracts showing two seeds with twisted tubillus of E. intermedia; Fig. 2. Decussately arranged fleshy red bracts and exposed seeds of E. gerardiana; Fig. 3. Decussately arranged fleshy red bracts of E. saxatilis; Fig. 4. Strobilus of E. saxatilis enclosing two seeds; Fig. 5. strobili of E. regiliana. [Scale bars: 0.1 cm; 0.1 cm; 0.2 cm; 0.3 cm; 0.5 cm – respectively] Rita Singh & Pragya Sourabh 85 crystallized brown powdery pith resin. They scoop out the powdery resin with needle and after mixing it with milk they take it as vitalizer. Almost all the Ayurvedic and Allopathic expectorants include Ephedra as one of the ingredients. 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