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Plant Systematics and Evolution

, Volume 289, Issue 1–2, pp 13–33 | Cite as

Leaf anatomy as a contribution to the taxonomy of Salacioideae N.Hallé ex Thorne & Reveal (Celastraceae)

  • Sandra Maria Alvarenga GomesEmail author
  • Julio Antonio Lombardi
Original Article

Abstract

The current classification systems recognize Salacioideae as a monophyletic group within Celastraceae. Nonetheless, some divergences exist for genera: in some cases, most species of the subfamily have been included in only two genera; in others, these genera have been subdivided. This study characterizes the leaf anatomy of 31 species of the subfamily Salacioideae as a contribution to identifying them through features that may also help distinguish among genera. Cross-sections of the median region of the leaf blade and of the petiole and dissociated and macerated epidermis were analyzed. Taxonomically relevant anatomical characters include the type of crystals in the parenchymatous tissue (monocrystals in Cheiloclinium and druses in other genera); the presence of laticifers in Cheiloclinium and Tontelea only; the variable form of the petiole vascular system among studied species; the type of stomata (cyclocytic with two concentric circles of subsidiary cells in P. dulcis; anomocytic in T. attenuata, T. fluminensis, and T. leptophylla; laterocytic in C. anomalum and C. hippocrateoides; and ciclocytic in the other species); the sinuosity of the anticlinal walls of the epidermal cells (sinuous in Cheiloclinium and Peritassa, except P. laevigata, and in S. arborea, S. insignis, S. mosenii, S. nemerosa, and S. opacifolia, and straight in all other studied species); the presence of crystalliferous idioblasts in the epidermis of P. dulcis, P. flaviflora, and P. mexiae; and the presence, form, and disposition of sclereids in the leaf blade, which is a highly variable character among the studied species.

Keywords

Celastraceae Salacioideae Leaf anatomy Taxonomy 

Notes

Acknowledgments

We thanks CNPq-Conselho Nacional de Desenvolvimento Científico e Tecnológico, for Sandra M. A. Gomes Doctor Fellowship, and Julio A. Lombardi for the Research Fellowship grants (nº 523026/96-0, 300220/2003-0, and 306395/2006-1). We would also like to thank the reviewers Louis Ronse De Craene and Mark P. Simmons, who critically reexamined his manuscript.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Sandra Maria Alvarenga Gomes
    • 1
    Email author
  • Julio Antonio Lombardi
    • 2
  1. 1.Departamento de Botânica, Setor de Ciências BiológicasUFPR-Universidade Federal do ParanáCuritibaBrazil
  2. 2.Instituto de BiociênciasUNESP-Universidade Estadual PaulistRio ClaroBrazil

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