According to Sculthorpe (1985), some genders of Alismataceae
possess more evident thickening in the central cylinder, information confirmed for Echinodorus grandiflorus.
However, Tofieldiaceae and Alismataceae
, although characteristic of marshy habitats (ranging from savannah seeps to ponds), have vessels in roots.
Ecotone Macrophyte Macrophyte littoral type typologies families Lentic Emergent Alismataceae
Emergent, fixed submersed Cyperaceae Fixed floating Menyanthaceae Fixed submersed Najadaceae Fixed floating Nymphaeaceae Emergent Pontederiaceae Emergent Typhaceae Lotic Emergent, fixed submersed Eriocaulaceae Emergent Sphagnaceae Lentic/lotic Amphibian, emergent, fixed Poaceae submersed Fixed submersed Mayacaceae * López and Ferreira (2005) and Pedralli et al.
SC/NM 1 N T R Sp ALISMATACEAE
Alisma triviale Pursh NM 4 N P W Su Echinodorus rostratus (Nutt.
Families represented by a single species are the Alismataceae
, Araceae, Cabombaceae, Juncaceae, Lamiaceae, Najadaceae, Rubiaceae, Saururaceae, Sparganiaceae, Typhaceae, and Zannichelliaceae.
, Cabombaceae, Ceratophyllaceae, Rhizophoraceae, Typhaceae), or are families with species that probably recently colonized from elsewhere in the Southern Hemisphere (Coriariaceae, Winteraceae) or from the Northern Hemisphere (Betulaceae, Cornaceae), with no or limited divergence since their arrival.
In the Alismataceae
and Limnocharitaceae the derivation of stolonlike structures from inflorescences is obvious: vegetative features have been incorporated into structures that are recognizably inflorescences.
We found only two exceptions to this rule: Bignoniaceae and Alismataceae