Tracheophytes
Development of the root-stem-leaf vascular system
nonvascularized body (thallus) that may be variously shaped ...
tracheophytes Plants with a well-defined vascular system.
tract A bundle of nerve fibers within the central nervous system.
Vascular plants (tracheophytes)
†Rhyniophyta-rhyniophytes
†Zosterophyllophyta-zosterophylls
Lycopodiophyta-clubmosses
†Trimerophytophyta-trimerophytes
Pteridophyta-ferns and horsetails
†Progymnospermophyta ...
We can divide the plants into two groups, the bryophytes (literally meaning moss plants) and tracheophytes (plants with trachea or "pipes").
microspore
The smaller of the two types of spore produced by ferns and higher plants, giving rise to the male gametophyte. In Tracheophytes the microspore is the pollen grain.
 See also: Organ, Sperm, Plant, Cells, Bacteria
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