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Drosera burmannii
''Drosera burmannii'', the tropical sundew,〔Erickson, Rica. 1968. ''Plants of Prey in Australia''. Lamb Paterson Pty. Ltd.: Osborne Park, Western Australia.〕 is a small, compact species in the carnivorous plant genus ''Drosera''. It normally spans only in diameter. It is one of the fastest trapping sundews as well, and its leaves can curl around an insect in only a few seconds, compared to the minutes or hours it takes other sundews to surround their prey. In nature, ''D. burmannii'' is an annual, but in cultivation, when grown indoors during the cold months, it can live for many years. Since ''D. burmannii'' is an annual, it produces large amounts of seed.〔The International Carnivorous Plant Society. (Growing ''Drosera burmannii'' and ''D. sessilifolia'' ). Accessed online: 12 September 2009.〕 ''Drosera burrmannii'' has been considered a powerful rubefacient in Hindu medicine.〔Lewis, Walter H., 1977 ''Medical Botany - Plants Affecting Man's Health''. John Wiley & Sons, St. Louis, Missouri.〕
''Drosera burmannii'' is an herb that produces very short stems and leaves in a rosette. Each wedge-shaped leaf is typically 8–10 mm long and 5–6 mm wide. White flowers are produced in groups of 3 to 10 on tall racemose inflorescences, of which there can be one to three per plant.〔Marchant, N. G., and George, A. S. 1982. Droseraceae. ''Flora of Australia'', Vol. 8. pp. 9-64.〕
The first brief description of the species was written by Paul Hermann and published after Hermann's death by William Sherard in ''Musaeum Zeylanicum''. It was described in more detail by Johannes Burman in his 1737 publication on the flora of Ceylon. Burman used the polynomial ''Ros solis foliis circa radicem in orbem dispositis'',〔Burman, Johannes. 1737. (Thesaurus zeylanicus, exhibens plantas in insula Zeylana nascentes. ) Amsterdam. p. 207.〕 but the species was not formally published until 1794 when Martin Vahl named it in honor of Burman as ''Drosera burmanni'' (the species epithet is usually orthographically corrected to ''burmannii''). In 1871 Heinrich Gustav Reichenbach described a new species, ''D. dietrichiana'', named after its discoverer Amalie Dietrich. In his 1906 monograph of the Droseraceae, Ludwig Diels reduced this species to a variety of ''D. burmannii''. This variety was described as being a larger and more robust plant than ''D. burmannii'' var. ''burmannii''. Both ''D. dietrichiana'' and the variety are now considered synonyms of ''D. burmannii''.〔〔Schlauer, J. 2009. (World Carnivorous Plant List - Nomenclatural Synopsis of Carnivorous Phanerogamous Plants ). Accessed online: 12 September 2009.〕
==See also==
*List of ''Drosera'' species
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