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Phylogeny and Evolution of Flowering Plants

Home | Theories of Evolution | Phylogentic Tree & Dichotomous Key | Monocots & Dicots | Cyanobacteria | Green Algae | Psilophyta | Lycophyta | Ginkgophyta | Coniferophyta | Gnetophyta | Anthophyta | Sphenophyta | Bryophyta | Hepatophyta | Anthocerophyta | Pterophyta | Cycadophyta | Angiosperm Evolution Essay | Work Cited



Psilophyta is classified under the kingdom, Plantae. It lacks true roots and leaves but contains elements that are seen in many vascular plants, making itself a vascular plant. Psilophyta included forms such as Psilophyton and Rhynia but are now classified in two genres of Psilophytes, which are Psilotum and Tmesipteris. Because Psilophyta does not have true roots, it is anchored by a long stem called a rhizome. Rhizomes produce unicellular rhizoids which act like root hairs for Psilophyta to stay erect and structured.

By Brittany, Katelyn, Kyle, and Robbie