|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|L. R. Mautino and L. M. Anzótegui 2002||Pollen grain isopolar, radiosimetric, oblate-spheroidal to prolate, tricolporate, trilobate to subtriangular in outline. Colpi almost reaching the poles, bordered by a zone of smooth exine forming a prominent margo clearly observed in polar view; in equatorial view often obscured especially when the pollen grain is partially collapsed. Ora 3.2-6.7 μm wide and 1-6 μm height. Exine microreticulate 2-3, 3 μm thick clearly stratified; sexine of 1.5-2.2 μm and nexine generally half the thickness of the sexine, of 0.5-1.1 μm. Microreticulum with lumina of uniform size over the whole grain (0.5 to 1 μm).|