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Brittonia

, Volume 38, Issue 1, pp 17–26 | Cite as

A new species of ceratozamia (Zamiaceae) from Veracruz, Mexico with comments on species relationships, habitats, and vegetative morphology in ceratozamia

  • Dennis Wm. Stevenson
  • Sergio Sabato
  • Mario Vázquez Torres
Article

Abstract

Ceratozamia euryphyllidia from Veracruz is described and illustrated. This species differs from all others in the genus in its very large, broad leaflets (9–16 cm wide) which have undulate margins, prominent veins, and a membranous to translucent texture at maturity. It is apparently related to a group of species which all have relatively small strobili and leaflets that are attenuate basally, oblanceolate to obovate, inequilateral, abruptly acuminate apically, and generally papyraceous to membranaceous. The allopatric species of this group inhabit moist to very wet areas. The wetter the habitat, the larger and thinner the leaflets. Thus, for example,C. latifolia which has the smallest leaflets grows in the driest habitat whereasC. euryphyllidia which grows in the wettest habitat has the largest leaflets in the genus.

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Literature Cited

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Copyright information

© The New York Botanical Garden 1986

Authors and Affiliations

  • Dennis Wm. Stevenson
    • 1
    • 2
  • Sergio Sabato
    • 3
  • Mario Vázquez Torres
    • 4
  1. 1.Department of Biological Sciences, Barnard CollegeColumbia UniversityNew York
  2. 2.New York Botanical GardenBronx
  3. 3.Dipartmento di Biológia VegetaleUniversitá di NapoliNapoliItaly
  4. 4.Facultad de Ciencias BiológicasUniversidad Veracruzana, XalapaVeracruzMexico

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