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Ludwigia peruviana (Linnaeus) H. Hara [Onagraceae]: a new record for West Bengal, India
Abstract
Ludwigia peruviana (Linnaeus) H. Hara [Onagraceae] is a robust bushy wetland plant that has been collected first time from Mahananda river bed at Naukaghat near Siliguri and from the campus of North Bengal University of the Darjeeling district of West Bengal. The taxonomic description, photograph, distribution and ecology of the species are provided for its easy identification.
... Its roots took up in the most Cd, with 27%, but its shoots only accumulated 14%. It is considered that L. peruviana is a good accumulator of heavy metals such as Cu, Zn, Pb, and Cd, and it is one of the most important genera of wetland plants (Chowdhury et al. 2013; Anyinkeng et al. 2020). Furthermore, S. trilobata accumulates more than 100 mg/kg of Cd and has the tolerance mechanisms that make it a viable candidate for phytoremediation of this element (Pernía et al. 2019). ...
... Some representative ecological research on the flora of the KL include those by Acharya et al. (2010), Chettri et al. (2002), Dey et al. (2015), Moktan et al. (2009), Singh andSundriyal (2005), Subba et al. (2015), Pradhan and Badola (2015), Tambe and Rawat (2010). A small number of studies are related to new records of floral species (for instance, Chettri et al., 2012;Chettri et al., 2012;Chowdhury et al., 2013;Thapa and Lama, 2015) and exploration of newer populations of rare rhododendrons (Badola and Pradhan, 2010a, b) and micro-habitat diversity and conservation aspects of threatened species (Pradhan and Badola, 2015). This indicates the high biodiversity value of the KL in terms of species richness, which may increase with more intensive and systematic exploration in the less explored areas. ...
The Kangchenjunga Landscape (KL) in the Eastern Himalayas is a transboundary complex shared by Bhutan, India, and Nepal. It forms a part of the 'Himalayan Biodiversity Hotspot' and is one of the biologically richest landscapes in the Eastern Himalayas. In this paper, we use secondary information to review and consolidate the knowledge on the flora of the KL. We reviewed 215 journal articles, analysed the history of publications on the flora of the KL, their publication pattern in terms of temporal and spatial distribution and key research areas. Our review shows that the landscape has a long history of botanical research that dates back to the 1840s and progressed remarkably after the 1980s. Most of the studies have been carried out in India, followed by Nepal and Bhutan. The majority of these have been vegetation surveys, followed by research on ethnobotanical aspects and Non-Timber Forest Products (NTFPs). This paper describes the forest types and characteristic species of the KL and details the species richness, diversity and dominant families of seed plants. A total of 5198 species of seed plants belonging to 1548 genera and 216 families have been recorded from the landscape, including 3860 dicots, 1315 monocots and 23 gymnosperms. Among families, Orchidaceae is the most diversely represented family in terms of species richness. This paper also draws attention to the threatened and endemic flora of the KL, including 44 species that are threatened at national and global level and 182 species that are endemic. Finally, the paper reviews the major challenges facing the KL, the conservation efforts and practices that are currently in place and recommends systematic and comprehensive floral surveys, particularly long-term data collection and monitoring and transboundary collaboration, to address the existing knowledge gaps on floral diversity of the KL.
Alongside anthropogenic activities and habitat destruction, invasions are regarded as one of the most influential components of global change. India as a growing economy and rapidly developing nation has been constantly engaged in infrastructure development which consequently has led to depletion of natural resources and declining quality of habitats aquatic systems in particular. Invasions that have established from the introductions in past during the colonial era and recently spread species are great challenges that hamper survival of aquatic resources. As of 2015, 20 plants, one mollusc and 38 fishes are known to have naturalized in the Indian water bodies. Awareness on the invasive species along with detailed information on the ecosystem-wide impacts is essential for management.
The genus Ludwigia L. consists of seven species and one infraspecific taxon in India, of which L. decurrens forms the first report for India. This revision provides a key to species, descriptions and illustrations along with data on phenology, distribution and notes on ecology.
A formal classification of the land plants that is compatible with the APG III classification is proposed. Previous classifications inflated taxonomic ranks, particularly of the angiosperms. If the major clades of green algae are recognized as classes, then all land plants, the embryophytes, should be included in a single class, here recognized as Equisitopsida. Accordingly, the 16 major clades of land plants, including the angiosperms, should all be recognized as subclasses, the angiosperms as Magnoliidae. Major clades within the angiosperms are then recognized as superorders. This classification still uses a few informal categories (e.g. eudicots, lamiids, etc.) within the angiosperms because this is convenient. Two new names are established: Amborellanae and Austrobaileyanae. © 2009 The Linnean Society of London, Botanical Journal of the Linnean Society, 2009, 161, 122–127.
Resource manual on lowland rice weeds in Southeast Asia. Searle (India) Limited
- L M Arceo
Arceo, L.M. 1979. Resource manual on lowland rice weeds in Southeast Asia. Searle
(India) Limited, Bombay.
Onagraceae In: The Flora of the Presidency of Bombay
- T Cook
Cook, T. 1901. Onagraceae. In: The Flora of the Presidency of Bombay. Vol. 1. Taylor &
Francis. London. Pp. 548 – 552.
- H E Baillon
Baillon, H.E. 1877. Historia Plantarum. Vol. 6.
- Guha Bakshi
Guha Bakshi, D. N. 1984. Flora of Murshidabad District, West Bengal, India, Scientific
Publisher, Jodhpur, India, Pp. 440.
Ludwigia versus Jussiaea
- H Hara
Hara, H. 1953. Ludwigia versus Jussiaea. J. Jap. Bot. 28 (10): 1 -6.