"Tracheophyta" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.
MeSH information
A subset of plants bearing a vascular system; examples are ferns and seed-bearing species.

This graph shows the total number of publications written about "Tracheophyta" by people in this website by year, and whether "Tracheophyta" was a major or minor topic of these publications.
Bar chart showing 221 publications over 18 distinct years, with a maximum of 34 publications in 2017
To see the data from this visualization as text, click here.