Synopsis top ↑
This catalogue comprises the taxa of the lichens reported from the
political boundaries of India (continental and insular), Nepal,
Pakistan and Ceylon. The consideration together of these territories
falling within a single phytogeographical unit, has been taken up with
a view to give the research workers in any of these countries an
opportunity to assess their floristic component with reference to the
neighbouring country. The catalogue is an out-come of compilation for
a number of years in India (major part of this, comprising 702 species
excluding lichens from Ceylon was included as an appendix in the
Ph. I). thesis submitted by the author at the University of Lucknow in
1,960), and subsequently completed in its present form during the
author’s stay (1960—63) at the University of Colorado, U.S.A. This
long period for the compilation was necessitated on account of the
much dispersed literature on Indian lichens in the publications of the
l.9th and early 20th century several of which were not available in
India. Under the schematic representation followed, the taxa
comprising the catalogue number 1310 species belonging to 158 genera
and 50 families. The thus consolidation of the taxa, it is hoped, will
form a firm foundation on which future taxonomic investigations on the
lichens of this region can be satisfactorily carrie out.
The taxa that have been described on the material collected from this subcontinent have been marginally marked by an asterisk (*) in the catalogue. A large number of these taxa are known from their original collections only. The type specimens are located in the various European herbaria and thus not within an easy reach to an Indian worker. Even the duplicates of the earlier collections are either altogether absent or insignificantly represented in the Indian herbaria. This has made the comparison of fresh collections a formidable task Tropical lichens in general are in great need of revision on world-wide basis and there is possibility that many taxa have been described more than once not only from other parts of the world but even from India. Such tangles can be resolved only after a thorough examination of the type specimens preserved in numerous herbaria.
The genera, the species within the genus, are arranged alphabetically for easy reference. The name of the family has been noted within parenthesis against the name of the genus according to the system of Zaiilbruckner (1926) excepting those for which a subsequent authority has been quoted. Catalogus Lichenum Universalis by Zahlbruckner (1922—40), abbreviated to CATAL. for brevity in the catalogue, has been followed closely for nomenclatural purposes except in few cases. The latter mostly pertain to either revisions or "the monographs published subsequently. Each taxon described on the material from the subcontinent has been provided with complete citations of the references of the original author (and the author of a transfer), the name of the collector, the area of collection, and the location of the type specimen(s). For all other taxa, reference is made to the CATAL. to conserve space. The type specimens that have been seen by the author have been marked by the sign “I” following the abbreviation for the name of the herbarium. Under whichever name (the correct name, the basionym or the synonym) a taxon has been reported by an author has been cited as such along with the locality. Monographic works, such as by Motyka. (1936—38), Santesson (1952), Runemark (1956), and Kurokawa (1962) have been followed in toto. Few cross references have been given to avoid confusion. Few desirable new combinations have also been effected. Personal Opinion has been kept at a minimum unless they are warranted for clarification. Every attempt has been made to make the catalogue as comprehensive as possible within its limited scope. However, errors of omission or commission that may have crept in will be welcomed by the author, if brought to his notice.