Abstract
The vascular anatomy of seven genera of Magnoliaceae:Elmerrillia, Liriodendron, Magnolia, Manglietia, Michelia, Paramichelia andTalauma, was examined. Based on the primary vascular bundles, and not on the protoxylem courses, the vasculature was reconstructed. The vasculature was observed ontogenetically throughout the axes in both the flowers and vegetative shoots to determine the fundamental plan of the vascular systems, including the cortical and outer cortical vascular systems in the flowers. Each cortical strand, which was previously treated as a single strand, was found to consist of several collateral bundles arranged concentrically. The central, cortical and outer cortical vascular systems in the flowers are homologous and show parastichous patterns. The primary vascular system in the vegetative shoots is likewise arranged in a parastichous pattern, although it was previously considered to have a non-parastichous pattern.
The fundamental plan of the vascular system in the Magnoliaceae is always consistent in having no relation to the size of flowers.
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References
Beck, C.B., R. Schmid andG.W. Rothwell. 1983. Stelar morphology and the primary vascular system of seed plants. Bot. Rev.48: 691–815.
Benzing, D.H. 1967a. Developmental patterns in stem primary xylem of woody Ranales. I. Species with unilacunar nodes. Amer. J. Bot.54: 805–813.
— 1967b. Developmental patterns in stem primary xylem of woody Ranales. II. Species with trilacunar and multilacunar nodes. Amer. J. Bot.54: 813–820.
De Bary, A. 1884. Comparative Anatomy of the Vegetative Organs of the Phanerogams and Ferns. Engl. ed. (translated and annotated by F.O. Bower and D.H. Scott.) Clarendon Press, Oxford.
Devadas, C. andC.B. Beck. 1971. Development and morphology of stelar component in the stems of some members of the Leguminosae and Rosaceae. Amer. J. Bot.58: 432–446.
. 1972. Comparative morphology of the primary vascular systems in some species of Rosaceae and Leguminosae. Amer. J. Bot.59: 557–567.
Eames, A.J. 1931. The vascular anatomy of the flower with refutation of the theory of carpel polymorphism. Amer. J. Bot.18: 147–188.
— 1961. Morphology of Angiosperms. McGraw Hill, New York.
Esau, K.. 1965. Plant Anatomy, 2 ed. John Wiley and Sons, New York.
— 1977. Anatomy of Seed Plants, 2 ed. John Wiley and Sons, New York.
Hiepko, P. 1965. Vergleichend-morphologische unt entwicklungsgeschichtliche Untersuchungen über das Perianth bei den Polycarpicae. Bot. Jb.84: 359–508.
Ito, M. 1984. Studies in the floral morphology and anatomy of the Nymphaeales IV. Floral anatomy ofNymphaea tetragona George. Acta Phytotax. Geobot.35: 94–102.
— 1986. Studies in the floral morphology and anatomy of the Nymphaeales IV. Floral anatomy ofNelumbo nucifera. Acta Phytotax. Geobot.37: 82–96.
Jeffrey, E.C. 1917. The Anatomy of Woody Plants. Univ. of Chicago Press, Chicago.
Jensen, L.C. 1968. Primary stem vascular patterns in three subfamilies of the Crassulaceae. Amer. J. Bot.55: 553–563.
Melville, R. 1963. A new theory of the angiosperms flower: II The androecium. Kew Bull.17: 1–63.
— 1969. Studies in floral structure and evolution. I. Magnoliales. Kew Bull23: 133–180.
Metcalfe, C.R. andL. Chalk. 1979. Anatomy of the Dicotyledons, 2 ed. Vol. 1 Clarendon Press, Oxford.
Moseley, M.F. 1961. Morphological studies of the Nymphaeaceae II. The flowers ofNymphaea. Bot. Gaz.122: 233–259.
Namboodiri, K.K. andC.B. Beck. 1968a. A comparative study of the primary vascular system of conifers. I. Genera with helical phyllotaxis. Amer. J. Bot.55: 447–457.
. 1968b. A comparative study of the primary vascular system of conifers. II. Genera with opposite and whorled phyllotaxis. Amer. J. Bot.55: 458–463.
. 1968c. A comparative study of the primary vascular system of conifers. III. Stelar evolution in gymnosperms. Amer. J. Bot.55: 464–472.
Nast, C.G. 1944. The comparative morphology of the Winteraceae. VI. Vascular anatomy of the flowering shoot. J. Arn. Arb.25: 454–466.
Ozenda, P. 1949. Recherches sur les dicotylédones apocarpiques, contribution à l'étude des angiospermes dites primitives. Publ. Lab. L'Ecole Norm. Sup., Sér. Biol. Fasc.II: 1–183.
Philipson, W.R. andE.E. Balfour. 1963. Vascular patterns in dicotyledons. Bot. Rev.29: 382–404.
Skipworth, J.P. 1970a. Floral anatomy ofHelleborus niger andCaltha palustris and its bearing on the Gonophyll Theory. Phytomorphology20: 222–228.
— 1970b. Development of floral vasculature in the Magnoliaceae. Phytomorphology20: 228–236.
— andW.R. Philipson. 1966. The cortical vascular system and the interpretation of theMagnolia flower. Phytomorphology16: 463–469.
Skvortsova, N.T. 1958. On the floral anatomy ofMagnolia grandiflora L. Bot. Zhurn.43: 401–408 (in Russian).
Sporne, K.R. 1976. Girdling vascular bundles in dicotyledon flowers. Gard. Bull., Singapore29: 165–172.
Swamy, B.G.L. 1949. Further contributions to the morphology of the Degeneriaceae. J. Arn. Arb.30: 10–38.
Tucker, S.C. 1961. Phyllotaxis and vascular organization of the carpels inMichelia fuscata. Amer. J. Bot.48: 60–71.
Ueda, K. 1982. On the fundamental vascular pattern in the flowers of the Magnoliales. Acta Phytotax. Geobot.33: 383–391 (in Japanese).
Zimmermann, M.H. andP.B. Tomlinson. 1972. The vascular system of monocotyledonous stems. Bot. Gaz.133: 141–155.
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Ueda, K. Vascular systems in the magnoliaceae. Bot Mag Tokyo 99, 333–349 (1986). https://doi.org/10.1007/BF02488714
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DOI: https://doi.org/10.1007/BF02488714