Now showing items 1-2 of 2

    • Comparative Pollen Morphology and Ultrastructure of the Callitrichaceae 

      Cooper, Ranessa; Osborn, Jeffrey; Philbrick, Tom (2000-01-01)
      The Callitrichaceae are an aquatic family of dicots that include the single, geographically cosmopolitan genus Callitriche. Calliltriche contains 40-50 terrestial, amphibious, and oligately submersed species, and it is the ...
    • Monograph of Castelnavia (Podostemaceae) 

      Philbrick, Tom; Bove, Claudia; Edson, Thomas (2009-01-01)
      A monograph of Castelnavia is presented. Phylogenetic analyses of morphological characters reveal eight nonhomoplasious synapomorphies supporting the monophyly of the genus: 1) absence of roots, a 2) unilocular mature, 3) ...