Problem

Threatened species of Psilotophyta

Other Names:
Threatened species of Lycosphen
Threatened species of Psilotophytina
Endangered species of whisk ferns
Background:

The pteridophytes (ferns and fern-allies) have been subdivided along a variety of different lines. The principal point of contention between various schemes for dividing pteridophytes above the family level seems to be at what point in the hierarchy are distinctions to be made. Different taxonomic systems treat the the psilotophytes as a single phylum within the group of ferns and fern-allies, or as a division or subphylum.

Related UN Sustainable Development Goals:
GOAL 15: Life on Land
Problem Type:
C: Cross-sectoral problems
Date of last update
14.05.2020 – 03:16 CEST