GROUP A. PROTOPHYTA.
GROUP B. METAPHYTA.
The Metaphyta are subdivided into:
- 1. Cryptogams: Flowerless plants.
- 2. Phanerogams: Flowering plants.
The Cryptogams are subdivided into:
- 1. Thallophyta: Seaweeds, Fungi, Lichens.
- 2. Bryophyta: Mosses, Liverworts.
- 3. Pteridophyta: Ferns, Horsetails, Clubmosses.
The Phanerogams are subdivided into:
1. Gymnospermæ:
- Order a.—Cycadaceæ: Cycads.
- Order b.—Coniferæ: Pines, Spruces, Cypresses.