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Unformatted text preview: A. progymnosperms B. seed ferns III. P: Cycadophyta = cycads sago palms IV. P: Ginkgophyta = ginkgoes Ginkgo biloba V. P: Coniferophyta = conifers A. large group So. Hemisphere: Podocarpus , Agathis , Araucaria B. dominate forests C. leaves xerophytic adaptations D. some are dioecious E. sperm F. economically very valuable G. some of record holders VI. P: Gnetophyta = gnetophytes 3 very different genera 1. Ephedra 2. Gnetum 3. Welwitschia...
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- Spring '12