Nelumbo - The Bulletin of the Botanical Survey of India

M. S. Mondal ¹

Affiliations
1 Botanical Survey of India, Howrah, IN

Abstract

The Paper Presents Pollen Morphological Study of the Aquatic Flora Growing in the Different Pools and Lakes of the Indian Botanic Garden, Shibpur, Howrah, West Bengal. in the Present Study 64 Species, Comprising 4 Pteridophytes, 23 Dicotyledons and 37 Monocotyledons have been Described with Special Notes And/or Remarks, if Any. This Study will be Helpful for Correct Taxonomic Identification of the Aquatic Plants as well as Correlation of the Lake Sediments.

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Debjyoti Battacharya ¹, N. Partia ¹, M. S. Mondal ¹

Affiliations
1 Botanical Survey of India, Calcutta, IN

Abstract

Pollen morphology of 30 plant species collected from Salt Lake City area has been examined for the present study. Most of these species are new entrants in terms of plant succession after reclamation of saline swampy low land area of the present day greater Calcutta by dredged silt from Hooghly river. Pollen morphology shows a heterogeneous assemblage of morphoforms. Pollen dimorphism is also observed in some species. This study will be very much helpful in correlation of sedimentary samples of the area towards better understanding of past and present vegetation.

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M. S. Mondal ¹

Affiliations
1 Botanical Survey of India, Calcutta, IN

Abstract

Connarus andamanicus Mondal is a newly described species from Andaman and Nicobar Islands. Pollen morphology of the taxon is described in the present paper. Palynological characters have been considered towards the intrafamilial relationships of the taxa.

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Bhaswapti Panchanan ¹, M. S. Mondal ¹

Affiliations
1 Botanical Survey of India, Howrah, IN

Abstract

Present paper deals with 8 samples of water fern-Ceratopteris thalictroides (L.) Brongn. growing in the fresh water lakes of Indian Botanic Garden, Shibpur, Howrah and in nearby areas inundated by different factory wastes containing hydrocarbons, saponins, mercury residues and various heavy metals in addition to acidic and alkaline residues.

Biology of the water fern including spore production, fertility, germination etc. have been studied under control (IBG lakes) and field stress conditions. It is observed that environmental and pollution stress cause severe alteration in the life cycle of this aquatic fern affecting spore production rate, fertility percentage and germination. It is also observed that presence of humus in the soil, salinity and pH of the water also affect the biology and phenotypic plasticity of this water fern. Present observation will be very much helpful in further studies on the biology of the aquatic plants.

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A. N. Mahata ¹, A. Mukherjee ¹, M. S. Mondal ¹

Affiliations
1 Botanical Survey of India, Calcutta, IN

Abstract

The Pandanaceae R. Br, is represented in North East India by 4 species of the only genus PANDANUS Parkinson among which Pandanus unguifer. Hook.f. is endemic to,this region and the Eastern Himalaya. This work provides informations about morphology, chromosome number, distribution and uses of the concerned taxa. P. unguifer Hook.f. and P. furcatus Roxb. have so far remained unrepresented in taxonomic literature on Meghalaya.

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A. Pal ¹, M. S. Mondal ¹, P. K. Pal ¹

Affiliations
1 University of Burdwan, Burdwan, IN

Abstract

Pollen morphology of 10 species and 2 varieties of Rhamnacequs taxa belonging to all the four tribes have been worked out. Pollen morphology of the family shows a tendency of evolution from basic morphoforms to the derived ones. Pollen grains of all the taxa investigated have been found to possess triangular or sub-triangular amb with three equatorial apertures situated at the angles (angulo aperturate). In Ziziphus xylopyrus the pollen grains are pororate and in rest nine species those are colporate with circular or lalongate endoapertures. Exinc ornamentation shows a gradual tendency from granulose to rugulo-reticulate or reticulate pattern. Palynological features have been evaluated in understanding the taxonomy of the family.

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M. S. Mondal ¹, R. Guha ¹

Affiliations
1 Botanical Survey of India, Howrah, IN

Abstract

The family Connaraceae comprises of 24 genera and 385 species (Schellenberg, 1938) and is distributed exclusively in the tropics of the World. Africa is very well represented by 12 genera and 154 species. Asia and America are not so rich but having 9 genera and 142 species and 5 genera and 89 species respectively. The members of the family are largely restricted to lowland rain forests. Leenhouts (1958) led to a considerable reduction in the number of species and also substantial reduction of genera. His revision led to reduction of genera and species to 9 genera and 142 species for Asia and adjacent areas, 6 genera and 36 species for Malaysia, and 10 genera and 49 species for Africa. Forero (1983) estimated 101 species under 5 genera for America. Mabberley (1997) considers 180 species from 12 genera all over the world. India is represented by 4 genera, 15 species including 1 subspecies and 2 varieties (Mondal, 2000). The family was first designated by Robert Brown (1818) with 3 genera from Terebintaceae of de Jussieu (1789), a group of Genera Tbrebinacies affinia. Since then many more taxa have been added to this family and their distributional area have been revalued. Present paper deals with the distribution of Indian members of Connaraceae with latest nomenclature. The extension of Indian elements outside the country and the influcnec exerted by foreign taxa are presented. Fossil remains so far reported are also discussed. The paper will be very much helpful in better understanding of the world distribution pattern of the family and also to correlate the fossil remains and impressions.

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