Phytoliths in Taxonomy of Phylogenetic Domains of Plants

Table 3

Evolutionary aspects of the morphotypes of phytoliths.

Age	Morphotypes	Plant taxons
Ancient	Irregular smooth, irregular ruminate, needles, elongated, elongate, and geometrically correct (pyramids, hexagons, etc.)	Red algae, lichens
Median	Circular and polylobate, silicification of a surface of a plant	Horsetails, Coniferous plants
Modern	Rectangular, elongated, and polygonal	Brown algae, floral