Class Psilopsida (Noun)
Meaning
Whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs.
Classification
Nouns denoting plants.
Examples
- Class Psilopsida includes two genera, Psilotum and Tmesipteris, of vascular plants with simplified morphological characteristics.
- Class Psilopsida contains plants without leaves that photosynthesize through scale-like, whisk-like or rhizome structures.
- Members of the class Psilopsida represent ancient types of vascular plants from early Earth.
- Most recent literature synonymizes the whisk fern family under Ophioglossales; historically though some also treat whisk ferns in a class Psilopsida of its own.
- Plant anatomy enthusiasts view Class Psilopsida specimens, given whisk fern roots typically arise only where its lower sections require supplementary mechanical stability and so few lower surfaces give evidence they indeed belong in some definition with Vascular group categories, offering evolution- oriented support at given occasions requiring Class context perspectives with new additions later possible alongside major prior discovery narratives.scalablytyped