| Division | # of species | Description |
| Rhodophyta | ~4,000 | Red algae. No flagellated cells; most marine, some freshwater, a few terrestrial. E.g., Irish moss, nori. |
| Phaeophyta | ~1,500 | Brown algae. All multicellular, some very large; almost all marine. E.g., Fucus, giant kelps. |
| Chlorophyta | ~7,000 | Green algae. Chlorophylls a and b, store starch; unicellular to multicellular; mostly freshwater, many marine, some terrestrial. E.g., Spirogyra, Ulothrix, Ulva. |
| Bryophyta | ~23,000 | Mosses, liverworts, hornworts. |
| Lycophyta | ~1,200 | Club mosses, ground pine. |
| Sphenophyta | ~40 | Horsetails. |
| Pterophyta | ~12,000 | Ferns. |
| Cycadophyta | ~100 | Cycads. |
| Gnetophyta | ~70 | Gnetum, Ephedra, Welwitschia. |
| Coniferophyta | ~550 | Conifers. |
| Ginkgophyta | 1 | Ginkgo biloba (the Ginkgo tree of eastern China, with fan-shaped leaves and yellow fruit) |
| Anthophyta | ~275,000 | Flowering plants. |