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Petunia pp 1-28 | Cite as

The Genus Petunia

  • João Renato Stehmann
  • Aline P. Lorenz-Lemke
  • Loreta B. Freitas
  • João Semir

Abstract

The common garden petunia, Petunia hybrida, is derived from P. integrifolia and P. axillaris, two of many Petunia species endemic to South America. The geographic distribution includes temperate and subtropical regions of Argentina, Uruguay, Paraguay, Bolivia, and Brazil, with a center of diversity in southern Brazil. The presence of seven chromosomes and a number of morphological, anatomical, and biochemical characteristics differentiate the genus from its sister taxon, Calibrachoa. Included in this chapter is a taxononomic guide for the 14 currently recognized species, some of them restricted to very small geographic areas. Species diversity is in danger of diminishing significantly due to human intervention, particularly in the form of grassland destruction.

Keywords

Corolla Tube Anticlinal Wall Corolla Lobe Araucaria Forest Longe Pair 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • João Renato Stehmann
    • 1
  • Aline P. Lorenz-Lemke
  • Loreta B. Freitas
  • João Semir
  1. 1.Departamento de BotânicaInstituto de Ciências Biológicas, Universidade Federal de Minas GeraisBelo HorizonteBrazil

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