Abstract
The pollen grains ofLauraceae andHernandiaceae are characteristic in having a tubular exine of ± microfibrillar structure. This is coated with a layer of medium electron-dense globules and very peculiar spines, made up of a substance differing from that of the exine. Such a pollen wall structure is otherwise unknown in seed plants and thus adds to the list of odd features erratically present in various taxa of the Ranalean complex.
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References
Dilcher, D. L., Crepet, W. L., Beeker, C. D., Beynolds, H. C., 1976: Reproductive and vegetative morphology of a Cretaceous angiosperm. — Science191, 854–856.
Doyle, J. A., Van Campo, M., Lugardon, B., 1975: Observations on exine structure ofEucommiidites and lower Cretaceous Angiosperm pollen. — Pollen et Spores17, 429–486.
Erdtman, H., 1952: Pollen Morphology and Plant Taxonomy. Vol. I. Angiosperms. — Stockholm: Almquist & Wiksell.
Heslop-Harrison, J., 1976: The adaptive significance of the exine. InFerguson, I. K., &Müller, J., (Eds.): The Evolutionary Significance of the Exine, 27–37. — Linn. Soc. Symp. Series 1. — London: Academic Press.
Hesse, M., 1978: Entwicklungsgeschichte und Ultrastruktur von Pollenkitt und Exine bei nahe verwandten entomophilen und anemophilen Angiospermensippen:Ranunculaceae, Hamamelidaceae, Platanaceae undFagaceae. — Pl. Syst. Evol.130, 13–42.
Kubitzki, K., 1969: Monographie der Hernandiaceen. — Bot. Jahrb.89, 78–209.
Le Thomas, A., 1978: Interprétation phylogénétique des angiospermes primitives a la lumière des charactères ultrastructuraux du pollen des Annonacées africaines. — Thèse (Sciences), Univ. Montpellier.
Mitroiu, N., 1970: Études morphopolliniques et des aspects embryologiques sur les „Polycarpicae“ etHelobiae, avec des considérations phylogénétiques. — Acta Bot. Horti Bucurest.1969, 3–241.
Pohl, R. W., 1965: Dissecting equipment and materials for the study of minute plant structures. — Rhodora67, 95–96.
Sampson, F. B., 1977: Pollen tetrads ofHedycarya arborea J. R. & G. Forst. (Monimiaceae). — Grana16, 61–73.
Takhtajan, A. L., Meyer, N. R., 1976: Pollen morphology ofDegeneria. — Bot. Žurn.61, 1531–1535.
Tiffney, B. H., 1977: Dicotyledonous angiosperm flower from the Upper Cretaceous of Martha's Vineyard, Massachusetts. — Nature265, 136–137.
Van Campo, M., 1971: Précisions nouvelles sur les structures comparées des pollens de Gymnospermes et d'Angiospermes. — C. R. Acad. Sci., Paris, Sér. D,272, 2071–2074.
Walker, J. W., 1976: Comparative pollen morphology and phylogeny of the Ranalean complex. — InBeck, C. B., (Ed.): Origin and Early Evolution of Angiosperms, 241–299. — New York-London: Columbia University Press.
—, Skvarla, J. J., 1975: Primitively columellaless pollen: A new concept in the evolutionary morphology of Angiosperms. — Science187, 445–447.
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Kubitzki, K. The tubular exine ofLauraceae andHernandiaceae, a novel type of exine structure in seed plants. Pl Syst Evol 138, 139–146 (1981). https://doi.org/10.1007/BF00984614
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DOI: https://doi.org/10.1007/BF00984614