Sem studies on vessel elements of Saururaceae

E. L. Schneider, S. Carlquist

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Vessel elements in Anemopsis have simple perforation plates and alternate (sometimes scalariform) lateral wall pitting; Anemopsis has tracheids with large, densely placed pits. These conditions are in contrast with tracheary element features of Gymnotheca, Houttuynia, and Saururus, in which perforation plates are scalariform (many with notably slender bars) and with scalariform lateral wall pitting. Porose pit membrane remnants, which cannot be seen with light microscopy, are newly reported in Houttuynia and Saururus. These porose pit membranes underline the primitive nature of vessels in Gymnotheca, Houttuynia, and Saururus. The highly specialized vessels of Anemopsis may relate to entry into seasonally dry habitats, whereas Gymnotheca, Houttuynia, and Saururus may have experienced unbroken occupancy of mesic habitats.

Original languageEnglish (US)
Pages (from-to)183-192
Number of pages10
JournalIAWA Journal
Volume22
Issue number2
DOIs
StatePublished - 2001

Keywords

  • Paleoherbs
  • Perforation plates
  • Piperales
  • Pit membranes
  • Vessel evolution
  • Vessel pitting

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