Inflorescence Structure in Koyamaeae and its Relationship with Sclerieae, Bisboeckelereae, Cryptagieae and Trilepideae Tribes (Cyperoideae-Cyperaceae)

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• 作者：Ignacio Dellaferrera ; Abelardo C. Vegetti
• 关键词：Koyamaea ; Cyperoideae ; Cyperaceae ; Inflorescence
• 刊名：The Botanical Review
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：81
• 期：2
• 页码：179-188
• 全文大小：494 KB
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  Reutemann, A. G., N. J. Guarise, M. G. López & A. C. Vegetti. 2009. Structure of inflorescences of selected South American species of Abildgaardia Vahl, Bulbostylis Kunth and Fimbristylis Vahl (Abildgaardieae-Cyperoideae-Cyperaceae). Plant Systematic and Evolution 283: 93-10.View Article
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• 作者单位：Ignacio Dellaferrera (2) (3)
  Abelardo C. Vegetti (1) (3)
  
  2. Cultivos Extensivos, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Santa Fe, Argentina
  3. CONICET, Consejo de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
  1. Morfología Vegetal, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Santa Fe, Argentina
  
• 刊物主题：Plant Sciences; Plant Systematics/Taxonomy/Biogeography; Plant Anatomy/Development; Plant Physiology; Plant Ecology;
• 出版者：Springer US
• ISSN：1874-9372

文摘

This paper aims to interpret and characterize the inflorescence of Koyamaeae tribe from the typological point of view in order to establish homologies and promote comparative studies and the use of inflorescence characters in future phylogenetic studies. The Koyamaeae tribe is comprised of one monotypic Koyamaea W. Thomas & Davidse genus, with K. neblinensis W. Thomas & Davidse. Koyamaea neblinensis has a synflorescence type II and/or type III made up by a many-noded culm, covered by sheaths, usually unbranched (synflorescence type II), but occasionally with 1- branches from the upper half (synflorescence type III). The inflorescence of Koyamaea shows a main axis leading to a terminal spikelet (main florescence) and a primary branch (primary paraclade) arising from the axillary bud of the single involucral bract. Accordingly, the inflorescence is composed of the main florescence and a highly reduced paracladial zone. This paracladial zone is reduced to one node where a single primary paraclade is inserted. This primary paraclade consists of a short hypopodium, a prophyll, an epipodium and a terminal spikelet (or coflorescence). The axillary bud of the prophyll develops a secondary branch (secondary paraclade) with a similar structure to that of the primary paraclade. All subsequent higher-order branches also arise in the axils of prophylls. Inflorescence characters of this tribe are discussed in relation to related tribes Sclerieae, Bisboeckelereae, Cryptangieae and Trilepideae (sensu Goetghebeur, 1998).