Nelumbo - The Bulletin of the Botanical Survey of India

M. P. Nayar ¹, P. Venu ¹

Affiliations
1 Botanical Survey of India, Calcutta, IN

Abstract

The present report attempts to evaluate the existing literature with regard to geobotanical and biogeochemical methods of investigation for mineral prospecting. The emphasis is laid o.i the validity of grouping of indicator plants into 'Universal' and 'Local' in the light of their limitations in application value. The report also stresses the essentiality of biosystematic studies prior to making any new reports from any mineralized areas. This suggestion is made taking in view the prevailing opinions on the evolution and adaptation of indicator plants. Moreover, few notable indicator species are now recognised as only ecotypes of the related species growing on unmineralised areas. A compilation of indicator plants is made and the scope of utilisation and profitable exploitation of these taxa is discussed. A few important aspects of biogeochemistry are also given which are necessary in systematic and effective orientation surveys. It was felt that instead of taking up this subject in the established line, the analysis of herbarium material, procured from different herbaria of the country would be of great use for a quick tracing and assessment of mineral rich areas in the country.

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P. Venu ¹, P. Daniel ¹

Affiliations
1 Botanical Survey of India, Southern Circle, Coimbatore-641 003, IN

Abstract

Strobilanthes circarensis described by Gamble based on incomplete material is subjected to critical studies and its identity is compared with that of S. neilgherrensis Bedd, and S. pulneyensis C.B. Clarke. The reports of its rarity md its occurrence elsewhere after type collection are reviewed. It is now proved conspecific with S. pulneyensis and a detailed description with an illustration is included.

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P. Venu ¹, P. Daniel ¹

Affiliations
1 Botanical Survey of India, Southern Circle, Coimbatore - 641 003, IN

Abstract

Hemigraphis venosa, a species described from Tamil Nadu, India and in all probability never collected after the type, is described in detail and illustrated for the first time. The confusion in its taxonomy and nomenclature is pointed out. The need to rediscover it is stressed.

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P. Venu ¹, P. Daniel ¹

Affiliations
1 Botanical Survey of India, Southern Circle, Coimbatore - 641 003, IN

Abstract

The long established Kanjarum palghatense Ramam. is now proved that it is nothing but the less known Strobilanthes dupeni Bedd. ex C. B. Clarke. It is redescribed, illustrated and its critical status reviewed.

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P. Venu ¹, P. Daniel ¹

Affiliations
1 Botanical Survey of India, Southern Circle, Coimbatore - 641 003, IN

Abstract

The specific status of Strobilanthes pushpangadanii E.S.S. Kumar & al. is disputed and the name is reduced to a synonym under S. lawsoni Gamble.

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M. Sanjappa ¹, P. Venu ²

Affiliations
1 Botanical Survey of India, Kolkata, IN
2 Botanical Survey of India, Hyderabad, IN

Abstract

No Abstract.

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P. Venu ¹, W. Dinesh Albertson ²

Affiliations
1 Botanical Survey of India, Hyderabad, IN
2 Botanical Survey of India, Southern Circle, Coimbatore, IN

Abstract

No Abstract.

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M. Venkat Ramana ¹, P. Venu ², M. Sanjappa ³

Affiliations
1 Andaman & Nicobar Regional Centre, Port Blair - 744 102, IN
2 Central National Herbarium, Botanical Survey of India, Howrah - 711 103, IN
3 Botanical Garden, University of Agricultural Sciences, GKVK, Bengaluru - 560 065, IN

Abstract

Cleidion nitidum (Mull. Arg.) Thwaites ex Kurz is collected from a range of localities from Andaman & Nicobar Islands. The issues concerning its identity, affinity with C. javanicum, C. microcarpum and C. ramosii and distribution are deliberated. It is described and illustrated.

Keywords

Cleidion javanicum, Cleidion microcarpum, Cleidion ramosii, Taxonomy.

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M. Sanjappa ¹, P. Venu ¹

Affiliations
1 Botanical Survey of India, Kolkata, IN

Abstract

No Abstract.

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M. Sanjappa ¹, P. Venu ¹

Affiliations
1 Botanical Survey of India, Kolkata, IN

Abstract

No Abstract.

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M. Sanjappa ¹, P. Venu ¹

Affiliations
1 Botanical Survey of India, Kolkata, IN

Abstract

No Abstract.

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P. S. Annamma ¹, N. Venugopal ¹, P. Venu ²

Affiliations
1 Botanical Survey of India, Deccan Regional Centre, Hyderabad - 500 048, IN
2 Laila Nutra R & D Centre, Vijayawada - 520 007, IN

Abstract

No Abstract.

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V. Seshavatharam ¹, B. S. M. Dutt ¹, P. Venu ¹

Affiliations
1 Andra University, Waltair, IN

Abstract

Kolleru lake is a large fresh water body extending over 850 sq. km in the Krishna and West Godavari districts of Andhra Pradesh, between 81°40' and 80°20' E and 17°25' and 1.6°28' N. The entire lake being shallow, has only littoral vegetation with practically no limnetic and profoundal zones. As the lake receives rich nutrients as effluents from the several drains that empty into it, the vegetation is luxuriant. About nineteen species of hydrophytes belonging to thirteen angiosperm families are recorded. Data on the distribution of these hydrophytes in the lake and their frequency, relative frequency and abundance from different regions of the lake at different periods of the year, are presented.

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