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Featured researches published by A. K. Asthana.


Journal of Bryology | 2014

New national and regional bryophyte records, 40

L. T. Ellis; Michele Aleffi; A. K. Asthana; A. Srivastava; Vadim A. Bakalin; N. Batan; T. Özdemir; H. Bednarek-Ochyra; E. A. Borovichev; Montserrat Brugués; María J. Cano; S. S. Choi; D. De Beer; Jan Eckstein; P. Erzberger; Anna Ganeva; Rayna Natcheva; C. Garcia; Cecília Sérgio; Ricardo Garilleti; Belén Albertos; Felisa Puche; S. Gücel; M. Higuchi; Vincent Hugonnot; Kristoffer Hylander; Mesut Kirmaci; G. Aslan; T. Koponen; Francisco Lara

1. Aneura pseudopinguis (Herzog) PocsContributor: K. HylanderEthiopia: Kaffa, Bonga, Gimbo, Meligawa, Barta forest, 3 km ENE of Bonga, moist Afromontane forest, among other bryophytes on dead wood,...


Journal of Bryology | 2013

New national and regional bryophyte records, 37

L. T. Ellis; Silvia C. Aranda; A. K. Asthana; P Bansal; Virendra Nath; Vinay Sahu; J. Bayliss; G Asthana; S Srivastava; S Yadav; Montserrat Brugués; María J. Cano; M V Dulin; E Fudali; E. Fuertes; Rosalina Gabriel; Fernando E. A. P. Pereira; J A F Silva; S R Gradstein; Petra Hájková; Michal Hájek; Patxi Heras; M Infante; M Lebouvier; J Marka; K K Newsham; Ryszard Ochyra; Jovana Pantović; Marko Sabovljevic; Nonkululo Phephu

We report the first record of Drepanocladus longifolius for Slovakia evidenced by herbarium specimen.


Pharmaceutical Biology | 2000

ETHNOTHERAPEUTICS OF BRYOPHYTE PLAGIOCHASMA APPENDICULATUM AMONG THE GADDI TRIBES OF KANGRA VALLEY, HIMACHAL PRADESH, INDIA

Kushal Kumar; K.K. Singh; A. K. Asthana; Virendra Nath

The use of thalloid liverwort Plagiochasma appendiculatum Lehm. et. Lind. by Gaddi tribes of Kangra Valley, Himachal Pradesh in India, for the cure of burns, boils, and blisters of skin is reported for the first time.


Journal of Bryology | 2016

New national and regional bryophyte records, 46

L. T. Ellis; A. K. Asthana; P. Srivastava; I. Omar; K. K. Rawat; Vinay Sahu; María J. Cano; Denise Pinheiro da Costa; E. M. Dias; N. Dias dos Santos; Joan Bruno Silva; M. N. Kozhin; Elena A. Ignatova; S. R. Germano; E. O. Golovina; N. J. M. Gremmen; R. Ion; S. Ştefǎnuţ; M. von Konrat; M. S. Jimenez; Guillermo M. Suárez; Thomas Kiebacher; Marc Lebouvier; David G. Long; D. Maity; Ryszard Ochyra; I. Parnikoza; Vítězslav Plášek; Lucie Fialová; Z. Skoupá

L. T. Ellis1, A. K. Asthana2, P. Srivastava2, I. Omar2, K. K. Rawat2, V. Sahu2, M. J. Cano3, D. P. Costa4, E. M. Dias5,8, N. Dias dos Santos5,6, J. B. Silva5, V. E. Fedosov7, M. N. Kozhin7, E. A. Ignatova7, S. R. Germano8, E. O. Golovina9, N. J. M. Gremmen10, R. Ion11, S. Ştefǎnuţ11, M. von Konrat12, M. S. Jimenez13,14, G. M. Suárez13,15, T. Kiebacher16, M. Lebouvier17, D. G. Long18, D. Maity19, R. Ochyra20, I. Parnikoza21, V. Plášek22, L. Fialová22, Z. Skoupá22, S. Poponessi23, M. Aleffi23, M. S. Sabovljević24, A. D. Sabovljević24, P. Saha25, M. N. Aziz25, J. Sawicki26,22, M. Suleiman27, B.-Y. Sun28, J. Váňa29, T. Wójcik30, Y.-J. Yoon31, J. Żarnowiec32, J. Larraín33


Journal of Bryology | 2011

New national and regional bryophyte records, 27

L. T. Ellis; A. K. Asthana; Vinay Sahu; P Bansal; Virendra Nath; P. Erzberger; Tomas Hallingbäck; M Infante; P Lazarević; Leena Luís; Rafael Medina; Ryszard Ochyra; N. Pande; Beáta Papp; Vítězslav Plášek; Marko Sabovljevic; Jakub Sawicki; Manuela Sim-Sim; Adam Stebel; Guillermo M. Suárez; J. van Rooy; Nonkululo Phephu

ub lis he d by M an ey P ub lis hi ng ( c) B rit is h B ry ol og ic al S oc ie ty Bryological Note New national and regional bryophyte records, 27 L T Ellis, A K Asthana, Vinay Sahu, P Bansal, V Nath, P Erzberger, T Hallingback, M Infante, P Lazarevic, L Luis, R Medina, R Ochyra, N Pande, B Papp, V Plasek, M Sabovljevic, J Sawicki, M Sim-Sim, A Stebel, G M Suarez, J van Rooy, N Phephu Department of Botany, The Natural History Museum, London, UK, Bryology Laboratory, National Botanical Research Institute, Lucknow, India, Belziger Str. 37, Berlin, Germany, Swedish University of Agricultural Sciences, Uppsala, Sweden, Museo de Ciencias Naturales de Alava, Vitoria-Gasteiz, Spain, Institute for Nature Conservation of Serbia, Belgrade, Serbia, Faculdade de Ciencias de Lisboa, Universidade de Lisboa, Portugal, Instituto Piaget, Campus Universitario de Santo Andre, Portugal, Universidad Autonoma de Madrid, Spain, Laboratory of Bryology, Institute of Botany, Polish Academy of Sciences, Krakow, Poland, Department of Botany, Kumaun University, Nainital, India, Botanical Department, Hungarian Natural History Museum, Budapest, Hungary, Department of Biology and Ecology, University of Ostrava, Czech Republic, Faculty of Biology, Institute of Botany and Botanical Garden, University of Belgrade, Serbia, Deparment of Botany and Nature Protection, University of Warmia and Mazury in Olsztyn, Poland, Museu Nacional de Historia Natural, Lisboa, Portugal, Department of Pharmaceutical Botany, Medical University of Silesia in Katowice, Poland, Facultad de Ciencias Naturales, Fundacion Miguel Lillo, Tucuman, Argentina, National Herbarium, South African National Biodiversity Institute, Pretoria, South Africa


Archive | 2001

Reproductive Biology of Bryophytes

Virendra Nath; A. K. Asthana

The bryophytes include three parallel groups; Musci, Hepaticae and Anthocerotae. Some workers (Crandall Stotler 1980) have considered these groups even to be independent phyla. However, plants of all of these three groups possess a basically similar pattern of life cycle, bearing the photosynthetically autonomous, usually perennial, haploid gametophyte as the dominant phase of the life cycle, which gives rise to an unbranched independent/partially-dependent diploid sporophyte carrying a single capsule. Despite wide-ranging modalities in reproduction, there are some basic constraints in the life cycle of bryophytes (Longton and Schuster 1983) due to the necessity of water for fertilization, production of a terrestrial gametophyte, short durability of the sporophyte and one-time production of spores. Some valuable contributions regarding the life cycles of bryophytes have been made by Gayat (1897), Longton and Greene (1967, 1969), Longton (1969, 1980, 1988), Udar (1976), Zander (1979), Pujos (1992), Hadderson and Longton (1995).


Cryptogamie Bryologie | 2013

In vitro Study on the Reproductive Behavior of the Endemic and Threatened Indian Liverwort: Cryptomitrium himalayense Kashyap (Aytoniaceae)

Vishal Awasthi; A. K. Asthana; Virendra Nath

Abstract Axenic cultures of the thalloid liverwort Cryptomitrium himalayense Kashyap were established from spores and propagated in vitro under a variety of culture media and controlled environments to determine the optimum conditions for the onset of sexual phase. Enhanced vegetative growth in form of overlapping rosette-forming thalli occurs on half strength Knops medium as well as in Hoagland medium under continuous illumination of 2.93 W/m2 at 21°C from the production of innovations from the basal parts of the dorsal surfaces of the thalli. Thalli became shorter and produced tuberous swelling following nutrient depletion and drying out of the medium. Sex organs were produced only on Hoagland medium supplemented with 1% sucrose under a long day regime with colder nights (16 hours light at 21°C and of 8 hours darkness at 15°C). Thalli acclimatized and transferred on soil also produced sex organs under similar conditions of photoperiod and temperature.


Journal of Bryology | 2004

Observations on the rare Indian hornwort Anthoceros alpinus Steph.

A. K. Asthana; Virendra Nath

in Lesotho, the Natal Drakensberg and the Orange Free State, southern Africa. Journal of Bryology 21: 133–155. Hyvönen J. 1989. A synopsis of genus Pogonatum (Polytrichaceae, Musci). Acta Botanica Fennica 138: 1–87. Jelenc F. 1955. Muscinées de l’Afrique du Nord. Bulletin de la Société Geographie et d’Archeologie de la Province d’Oran 72–76: 1–152. Kis G. 1985. Mosses of South-East tropical Africa. An annotated list with distributional data. Vácrátót: Institute of Ecology and Botany of the Hungarian Academy of Sciences. Koponen T, Niemelä T, Härkönen M, Koponen A, eds. 1990. Vegetation and ecology of the Tanzanian montane rain forests. Final report of FINNIDA project no. 282097 01-1. Helsinki: FINNIDA. Laaka S. 1990. The bryophyte vegetation and flora on disturbed soil in north eastern Tanzania. In: Koponen T, Niemelä T, Härkönen M, Koponen A. eds. Vegetation and ecology of the Tanzanian montane rain forests. Final report of FINNIDA project no. 282097 01-1. Helsinki: FINNIDA, 121–133. Muhle H. 1982. A checklist of mosses of the Cape Verde Islands. Courier Forschungsinstitut Senckenberg 52: 277–281. O’Shea BJ. 2003. Checklist of the mosses of sub-Saharan Africa (version 4, 12/03). Tropical Bryology Research Reports. 4: 1–182. Pócs T. 1994. The altitudinal distribution of Kilimanjaro bryophytes. In: Seyani JH, Chikuni AC, eds. Proceedings of the XIIIth plenary meeting of AETFAT, Malawi, Vol. 2. Zomba: National Herbarium and Botanic Gardens of Malawi, 797–812. Ros RM, Cano MJ, Guerra, J. 1999. Bryophyte checklist of Northern Africa. Journal of Bryology 21: 207–244. Sollman P. 1998. Several mosses (Pottiales) new or rarely collected in Africa. Tropical Bryology 14: 21–24. Wigginton MJ. 2002. Checklist and distribution of the liverworts and hornworts of sub-Saharan Africa, including the East African Islands (edition 1, February 2002). Tropical Bryology Research Reports 3: 1–88. Wigginton MJ, Grolle R. 1996. Catalogue of the Hepaticae and Anthocerotae of sub-Saharan Africa. Bryophytorum Bibliotheca 50: 1–267.


Cryptogamie Bryologie | 1999

Distributional patterns of the genus Folioceros Bharad. in India

A. K. Asthana; Virendra Nath

The genus Folioceros Bharad. is represented in the Indian subcontinent by 12 species: F. assamicus Bharad., F. appendiculatus (Steph.) Udar et Singh, F. dixitianus (Mahabale) Bharad., F. glandulosus (L. et L.) Bharad., F. indicus Bharad., F. kashyapii Sriv. et Asthana, F. mangaloreus (Steph.) Bharad., F. paliformis Singh, F. physocladus Bharad. ex Schiffn. et Pande, F. satpurensis (Sriv.) Bharad. et Srivastava, F. amboinensis (Schiffn.) Piippo and F. udarii Asthana et Sriv. The greatest concentration of species has been observed in the moist subtropical evergreen as well as deciduous forests of the eastern Himalaya and south India, possessing 6 and 4 species, respectively. Western Himalaya and central India host one species each while the Andaman Islands possess two species. All species are endemic to their bryogeographical zones except F. appendiculatus, F. glandulosus and F. amboinensis, as F. appendiculatus occur in Samoa, Java, Sumatra and New Guinea while F. glandulosus occurs in New South Wales, Australia and F. amboinensis in Java beyond the Indian subcontinent. Folioceros indicus, F. physocladus and F. satpurensis are restricted to slightly higher altitudes, whereas F. mangaloreus, F. assamicus, F. paliformis and F. amboinensis are restricted to comparatively lower altitudes.


Proceedings of the National Academy of Sciences, India Section B: Biological Sciences | 2014

Two Mosses New to West Himalayan Bryoflora

Vinay Sahu; A. K. Asthana

The Govind Wildlife Sanctuary is situated in Uttarakashi district of Uttarakhand. The area is very rich in biodiversity in general and bryodiversity in particular. During recent investigation on the bryoflora of this area, two species of mosses viz., Cyathophorella burkillii (Dixon) Broth. (Family-Hypopterygiaceae) and Symphyodon erraticus (Mitt.) A. Jaeger. (Family-Symphyodontaceae) have been identified, which are new additions to the bryoflora of western Himalaya. Both the taxa were earlier known from eastern Himalaya only. About 16 taxa of Cyathophorella are known all over the world; in India it is represented by five valid species. Fifteen species of Symphyodon are known worldwide, while in India the genus is represented by seven valid species. A morpho-taxonomic account of above two taxa is provided.

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Virendra Nath

National Botanical Research Institute

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Vinay Sahu

National Botanical Research Institute

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Reesa Gupta

National Botanical Research Institute

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Vishal Awasthi

National Botanical Research Institute

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K. K. Rawat

National Botanical Research Institute

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L. T. Ellis

Natural History Museum

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Ankita Srivastava

National Botanical Research Institute

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Ryszard Ochyra

Polish Academy of Sciences

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