Problem

Threatened species of Cycadophyta

Other Names:
Threatened species of Cycadophytina
Threatened species of Cycadales
Threatened species of cycads
Background:

This is the most primitive extant gymnosperm order and contains upwards of 206 species.

The gymnosperms have been subdivided along a variety of different lines and the recent flood of information on fundamental taxonomic characters (such as chloroplast DNA) has led to further revisions. The principal point of contention between various schemes for dividing gymnosperms above the family level seems to be at what point in the hierarchy are distinctions to be made. The cycads are variously treated as a phylum, subphylum or order within the gymnosperms.

Related UN Sustainable Development Goals:
GOAL 15: Life on Land
Problem Type:
C: Cross-sectoral problems
Date of last update
17.04.2019 – 10:39 CEST