iSpot applies the name Plantae to the clade Archaeplastida, corresponding to the Plants group in iSpot revision 3 (kelps and other meta-algae having been moved to other organisms under Chromista).
Archaeplastida is divided into Biliphyta (glaucophytes and red algae) and Viridiplantae (green algae and land plants). iSpot also places Tracheophyta directly under Plantae, rather than under VIridiplantae, which is where it should go if the browser hierarchy is to reflect the current consensus on taxonomy and phylogeny.
5 vascular plant groups are placed under Tracheophyta (lycopodiophytes, horsetails, conifers, gingko and flowering plants); the 6th (ferns) is placed under Viridiplantae. That is a problem. There is also the issue that horsetails tend to be included within ferns nowadays, but I’m not sure that’s 100% settled - older molecular work had horsetails and whisk ferns nested within “true ferns”, but there are now cladograms showing eusporangiate and leptosporangiate ferns as sister groups.
Viridiplantae is divided into the 3 non-vascular land plant groups (mosses, liverworts and hornworts), the misplaced ferns, and green algae split into two groups. Not all green algae groups are included in the browser (perhaps some are absent from Britain and Ireland), which complicates comparison with other classifications, but it looks as if the modern concepts of Charophyta and Chlorophyta are being used. Chlorophyta is split into 4 groups, which are all “core chlorophytes” - the paraphyletic prasinophytes appear to be absent from the browser. One of those 4 groups - Bryopsidophyceae - seems to have been sunk into a second - Ulvophyceae - in more recent work.
There is also a seaweeds entry in the taxonomy browser, which includes red algae, brown algae, and the two green algae groups. This ends up incorporating freshwater algae, both red and green, including stoneworts, and also terrestrial algae.
Looking upwards, there’s no direct way into Chromista and Protozoa. That might also be the case for Coelenterata (jellyfish and hydras), Ctenophora (comb jellies), Porifera (sponges), Bryozoa (moss animals), and Brachiopoda (lamp shells). Most other non-arthropod, non-mollusc, metazoan phyla are accessible via Worms.
Magnoliopsida (flowering plants) goes direct to the orders (and Boraginaceae; the order Boraginales was added in APG4, so that could be used instead).
Proposed fixes for plants
- Move Tracheophyta to Viridiplantae
- Move Pteridophyta to Tracheophyta
- move Bryopsidophyceae to Ulvophyceae as Bryopsidales