Psilophyta
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.
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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…
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Psilophyta