Abstract
Interrelationships of the ribbed araphid diatoms have been reinvestigated using a cladistic analysis of a revised morphological dataset. The presence of silicified transapical ribs has previously been used to distinguish between different groups and its ability to serve as a distinguishing feature is reevaluated. The importance of valve symmetry, not fully appreciated in a previous paper, is examined. The evolution of heteropolarity, and its importance in taxonomy appear more complex than is implied by a simple dichotomy dividing groups of species into heteropolar and isopolar forms, involving an inferred evolutionary transformation from one condition to the other. This analysis proposes a close relationship betweenDiatoma, Fragilariforma, Asterionella, Distrionella, Meridion, Tabellaria, andTetracyclus. It also confirms the sub-division ofDiatoma into two closely related taxa. The genusMeridion, however, should not include both heteropolar and isopolar species in a single genus. Although the species are closely related, the isopolar species are more closely related toTabellaria andTetracyclus than they are to the heteropolar species ofMeridion.
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Desikachary, T. V., Prema, P., 1988: Atlas of diatoms. Fasc. 3. — Madras: Madras Science Foundation.
Farris, J. S., 1988: HENNIG-86 reference manual. Version 1.5. — New York.
Gibson, R. A., 1978: An ultrastructural study ofPseudohimantidium pacificum Hust. & Krasske (Bacillariophyceae: Protoraphidaceae) with special reference to the labiate processes. — Nova Hedwigia, Beih.64: 147–126.
, 1979:Protoraphis atlantica sp. nov., a new marine epizoic diatom. — Bacillaria2: 109–126.
Geitler, L., 1973: Auxosporenbildung und Systematik bei pennaten Diatomeen und die Cytologie vonCocconeis-Sippen. — Österr. Bot. Zeit.122: 299–321.
Hustedt, F., 1959: Die Kieselalgen Deutschlands, Österreichs und der Schweiz unter Berücksichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. — In Dr.L. Rabenhorst's Kryptogamenflora von Deutschland, Österreich und der Schweiz,7 (2), pp. 177–320. — Leipzig: Akademische Verlagsgesellschaft.
Kociolek, J. P., Stoermer, E. F., 1988: A preliminary investigation of the phylogenetic relationships among the freshwater, apical pore field-bearing cymbelloid and gomphonemoid diatoms (Bacillariophyceae). — J. Phycol.24: 377–385.
, 1986: Review ofWilliams, D. M. (1985): Morphology, taxonomy and interrelationships of the ribbed araphid diatoms from the generaDiatoma andMeridion (Diatomaceae: Bacillariophyta). Bibliotheca Diatomologica 8, 228 pp. Cramer: Vaduz. — Phycologia25: 585–586.
, 1989: Inferring diatom phylogeny: a cladistic perspective. — Diatom Research4: 289–300.
Korner, H., 1970: Morphologie und Taxonomie der DiatomeengattungAsterionella. — Nova Hedwigia20: 557–724.
Ladiges, P. Y., Humphries, C. J., 1983: A cladistic study ofArillastrum, Angophora, andEucalyptus (Myrtaceae). — Bot. J. Linn. Soc.87: 105–134.
Mann, D. G., 1982: Structure, life history and systematics ofRhoicosphenia (Bacillariophyta). 1. The vegetative cell ofRh. curvata. — J. Phycol.18: 162–176.
, 1986: Review ofWilliams, D. M. (1985): Morphology, taxonomy and interrelationships of the ribbed araphid diatoms from the generaDiatoma andMeridion (Diatomaceae: Bacillariophyta). — Phycologia25: 269–270.
Nelson, G., Platnick, N. I., 1981: Systematics and biogeography. Cladistics and vicariance. — New York: Columbia University Press.
Patrick, R., Reimer, C. W., 1966: The diatoms of the United States. — Monogr. Acad. Nat. Sci. Philadelphia,13 (1): 1–686.
Reichardt, E., 1988: Neue Diatomeen aus Bayerischen und Nordtiroler Alpenseen. — Diatom Research3: 237–244.
Reid, F. M. H., Round, F. E., 1987: The Antarctic diatomSynedra reinboldii: taxonomy, ecology and transference to a new genus,Trichotoxon. — Diatom Research2: 219–227.
Rivera, P. S., Gonzales, H. E., Barrales, H. L., 1986: Cingulum and valve morphology ofPseudohimantidium Hustedt & Krasske (Bacillariophyceae). — Phycologia25: 19–27.
Ross, R., Cox, E. J., Karayeva, N. I., Mann, D. G., Paddock, T. B. B., Simonsen, R., Sims, P. A., 1979: An amended terminology for the siliceous components of the diatom cell. — Nova Hedwigia, Beih.64: 518–533.
Round, F. E., Crawford, R. M., Mann, D. G., 1990: The diatoms. — Cambridge: Cambridge University Press (in press).
Simonsen, R., 1970:Protoraphidaceae, eine neue Familie der Diatomeen. — Nova Hedwigia, Beih.31: 383–394.
Stosch, H. A. von, 1975: An amended terminology of the diatom girdle. — Nova Hedwigia, Beih.53: 1–35.
Wahrer, R. J., Fryxell, G. A., Cox, E. R., 1985: Studies in pennate diatoms: valve morphologies ofLicmophora andCampylostylus. — J. Phycol.21: 206–217.
Wiley, E. O., 1981: Phylogenetics: the theory and practice of phylogenetic systematics. — New York: Wiley.
Williams, D. M., 1985: Morphology, taxonomy and interrelationships of the ribbed araphid diatoms from the generaDiatoma andMeridion (Diatomaceae: Bacillariophyta). — Bibliotheca Diatomologica8. — Vaduz: Cramer.
, 1986: comparative morphology of some species ofSynedra Ehrenb. with a new definition of the genus. — Diatom Research1: 131–152.
, 1987: Observations on the genusTetracyclus Ralfs (Bacillariophyta). 1. Valve and girdle structure of the extant species. — Brit. Phycol. J.22: 383–399.
- 1989:Distrionella Williams, nov. gen., a new araphid diatom genus closely related toDiatoma Bory. — Arch. Protistenk. (in press).
, 1986: Revision of the genusSynedra Ehrenb. — Diatom Research1: 313–339.
, 1987: Revision of the genusFragilaria Lyngb. — Diatom Research2: 267–288.
, 1988: Phylogenetic systematics ofSynedra. — InRound, F. E., (Ed.): Proceedings of the 9th International Diatom Symposium, pp. 303–315. — Koenigstein: Koeltz; Bristol: Biopress.
, 1989:Fragilariforma, nom. nov., a new generic name forNeofragilaria Williams & Round. — Diatom Research3: 265–267.
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Williams, D.M. Cladistic analysis of some freshwater araphid diatoms (Bacillariophyta) with particular reference toDiatoma andMeridion . Pl Syst Evol 171, 89–97 (1990). https://doi.org/10.1007/BF00940597
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DOI: https://doi.org/10.1007/BF00940597