Psilophyta A phylum of primitive tracheophyte plants that contains two extant genera – Psilotum (whisk ferns) and Tmesipteris – as well as numerous extinct forms that flourished in the Devonian period. Psilophytes have rhizoids rather than roots; the stems, which show dichotomous branching, may be naked or bear scalelike leaves.
More From encyclopedia.com
Spermatophyte , spermatophyte Seed-bearing plant, including most trees, shrubs, and herbaceous plants. It has a stem, leaves, roots, and a well-developed vascular sy… Thallophyte , thallophyte A plant that is not differentiated into root, stem, and leaves; the plant body is known as a thallus. In some classifications, thallophyt… Pteridophyta , Pteridophyta (pteridophytes) A division of the plant kingdom, comprising the vascular cryptogams. They are flowerless plants exhibiting an alternatio… Hepatica , Hepatophyta (liverworts) A division of plants, formerly ranked as the class Hepaticae, characterized by a combination of features. The capsule is usu… Stonewort , stonewort The common name for the brittle, calcified plants of the Charophyta; Chara and Nitella are the commonest British genera. The plant consists… Root Nodule , root nodule A swelling on the roots of certain plants, especially those of the family Fabaceae (Leguminosae), that contains bacteria (notably Rhizobi…
About this article
Updated About encyclopedia.com content Print Article
You Might Also Like