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Contributions to the morphology ofDennstaedtia

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Proceedings / Indian Academy of Sciences

Abstract

The rhizome ofDennstaedtia appendiculata var.elwesii andD. scabra is creeping, slender, sparsely branched and covered by multicellular, uniseriate, acicular, gland-tipped, non-chlorophyllous hairs. The ground tissue is parenchymatous. The vascular cylinder is siphonostelic, pierced by two alternate, closely placed, dorsal rows of small non-overlapping leaf gaps. Leaf trace is solitary, broad, gutter-shaped and placed lateral to the leaf gap. Branching is dichotomous and the branch trace is siphonostelic; there are no branch gaps. The leaf is 2–3-pinnate with the stipe and rachis cylindrical and adaxially grooved; the adaxial groove of the branches of the rachises are interrupted at the base. Vascular connection to the secondary rachis is extramarginal. The ultimate segments of the leaf are small and bear multicellular, uniseriate hairs on both the surfaces. The sori are terminal on the apices of the veinlets (mostly on the apex of the superior basal veinlet so that only one sorus per segment is present), and protected by cup-shaped indusia which are glabrous. The sporangial stalk is 3–4 cells long and 3 cells thick at the apex. The spores are trilete with the exine smooth or bearing small circular protuberances. Spore germination is of the Vittaria-type and prothallial development of the Adiantum-type. Adult prothallus is cordatethalloid bearing leptosporangiate-type of sex organs. MorphologicallyDennstaedtia is very close toMicrolepia.

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References

  • Alston, A. H. G... “The subdivision of the Polypodiaceae,”Taxon, 1956,5, 23–25.

    Article  Google Scholar 

  • Ching, R. C... “On natural classification of the Polypodiaceae,”Sunyatsenia, 1940,5, 201–68.

    Google Scholar 

  • Christensen, C. ..Filicineae. In Verdoorn’s Manual of Pteridology, The Hague, 1938.

  • Copeland, E. B...Genera Filicum, Chronica Botanica Co., Waltham, Mass., 1947.

    Google Scholar 

  • Erdtman, G...Pollen Morphology and Plant Taxonomy. Almquivstand Wicksells, Uppsala, 1952.

    Google Scholar 

  • Holttum, R. E... “A revised classification of leptosporangiate ferns,”J. Linn. Soc. Bot., 1947,53, 123–58.

    Article  Google Scholar 

  • ----- ..Flora of Malaya, Vol. II,Ferns, Singapore, 1954.

  • ————— and Sen, U... “Morphology and classification of the tree ferns,”Phytomorphology, 1961,11, 406–20.

    Google Scholar 

  • Hooker, W. J. and Baker, J. G.Synopsis Filicum, London, 1868.

  • Mehra, P. N... “Cytological evolution of ferns with particular reference to Himalayan forms—Presidential Address,”Proc. Indian Sci. Congr., 1961,48, 1–24.

    Google Scholar 

  • Nayar, B. K... “Morphology of two Indian species ofBolbitis,”J. Indian Bot. Soc., 1960,39, 259–77.

    Google Scholar 

  • Nayar, B. K... “Morphology of the spores and prothalli of some species of the Polypodiaceae,”Bot. Gaz., 1962,123, 223–32.

    Article  Google Scholar 

  • —————.. “A phylogenetic classification of the homosporous ferns,”Taxon, 1970,19, 229–36.

    Article  Google Scholar 

  • —————..Classification of Homosporous Ferns. In Nayar and Kaur’s Companion to Beddome’s Ferns of British India. Chronica Botanica Co., Ajmer, 1972.

    Google Scholar 

  • —— and Devi, S... “Spore morphology of the Pteridaceae—III. The Dicksonioid, Dennstaedtioid and Lindsayoid Ferns,”Grana Palyn., 1968,8, 185–203.

    Article  Google Scholar 

  • —— and Kaur, S... “Contributions to the morphology of some species ofMicrolepia,”J. Indian Bot. Soc., 1963,42, 225–32.

    Google Scholar 

  • —————.. “Spore germination in homosporous ferns,”J. Palyn., 1968,4, 1–14.

    Google Scholar 

  • —————.. “Types of prothallial development in homosporous ferns,”Phytomorphology, 1969,19, 179–88.

    Google Scholar 

  • —————.. “Gametophytes of homosporous ferns,”Bot. Rev., 1971,37, 295–396.

    Article  Google Scholar 

  • Pichi-Sermolli, R. E. G. ..The Higher Taxa of the Pteridophyta and Their Classification. In Hedberg’s Systematics of Today. Uppsala Univ. Arsskrift, 1958, pp. 70–90.

  • ----- ..Pteridophyta. In Turril’s Vistas in Botany, London. 1959, pp. 421–93.

  • Tryon, R... “A review of the genusDennstaedtia,”Contr. Gray Herb 1960,188, 23–52.

    Google Scholar 

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Authors and Affiliations

  1. National Botanic Gardens, Lucknow, India

    Surjit Kaur

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  1. Surjit Kaur
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Communicated by Dr. T. N. Khoshoo,f.a.sc.

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Kaur, S. Contributions to the morphology ofDennstaedtia . Proc. Indian Acad. Sci. 75, 32–39 (1972). https://doi.org/10.1007/BF03045332

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