Abstract
THE arrival of reprints relating to researches by Swedish algologists during the war years has been welcome. Some of these have a bearing on life-histories in the Nemalionales, and in particular reference should be made to the work of Svedelius on Galaxaura. On the basis of morphological knowledge the existence of different types of life-history in this order seems obvious. So far, however, those which have been investigated cytologically have all conformed to one type: in this type reduction division occurs immediately after fertilization, the two dissimilar haploid phases (the gametophyte and carposporophyte) being separated by a diploid phase of the shortest possible duration.
Article PDF
References
Howe, M. A., Bull. Torrey Bot. Cl., 43, 621 (1916); Brooklyn Bot. Gdn. Mem., 1, 191 (1918).
Kjellmann, R., K. svenska Vetensk. Akad. Handl., 33, 109 (1900).
Børgesen, F., K. danske Vidensk. Selsk., Biol. Medd., 6, 3 (1927).
Svedelius, N., "Zytologisch-entwicklungsgeschichtliche Studien über Galaxaura", Nova Acta Soc. Sci. upsal., Ser. 4, 13, 4 (1942).
Svedelius, N., "Critical Notes on some Species of Galaxaura from Ceylon", Ark. Bot., 32, 6 (1945).
Svedelius, N., "On the Development of the Cystocarp in the genus Galaxaura and the Auxiliary Cells in the Order of Nemalionales", Blumea. Suppl. 2 (1942).
Svedelius, N., "Galaxaura, a Diplobiontic Floridean Genus within the order Nemalionales: Farlowia", 1, 4, 495 (1944).
Svedelius, N., Bot. Gaz., 83, 362 (1927).
Kylin, H., "Über den Auxiliarzellen der Florideen", Acta Univ. Lund, 14, 20 (1944).
Wilke, H., and Ziegenspeck, H., Bot. Arkiv., 24 (1929).
Kylin, H., "Über den Generationswechsel von Bonnemaisonia asparagoides", Acta Univ. lund, 15, 20 (1945).
Feldmann, J., and Feldmann, G., C.R. Acad. Sci. Paris, 208, 1425 (1939).
Feldmann, J., and Feldmann, G., Ann. Sci. Nat., 11, 3 (1942).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
DREW, K. LIFE-HISTORIES IN THE NEMALIONALES. Nature 157, 274–275 (1946). https://doi.org/10.1038/157274a0
Issue Date:
DOI: https://doi.org/10.1038/157274a0