What is another word for Order Psilotales?
Pronunciation: [ˈɔːdə sˈɪlətˌe͡ɪlz] (IPA) 
Order Psilotales, a group of primitive plants that lack true leaves and roots, can be referred to by a number of synonyms. These include Psilotopsida, Psilophytales, and Psilophyta. Additionally, some taxonomists classify these plants within the class Equisetopsida, which includes horsetails and ferns. The common name for this group of plants is whisk ferns, due to their thin, branching stems that resemble brooms or whisk brushes. Despite their primitive appearance, whisk ferns are important in the history of land plant evolution, as they diverged from the lineage that gave rise to modern ferns and seed plants over 400 million years ago.
