1. What recorded them were embryos of angiosperm and gymnosperm.

2. China has the richest flora of gymnosperm in the world, which is crucial for understanding the change of global distribution and phylogeny of gymnosperm.

3. Accessorial types such as fern and its spore, gymnosperm and its pollen appeared from Devonian to Jurassic.

4. It has also been found that the gymnosperm plants have few copies of CHS gene in a particular nuclear genome, but copy number varies greatly in the angiosperm plants.

5. Gymnosperm A general term for any seed plant except the angiosperms, characterized by bearing naked seeds.

6. Plants of Gymnosperm had been through a long historical evolution on earth, fossil records of which originated from the late Devonian period.

7. There was, of course, a considerable overlap between the gymnosperms and angiosperms.

8. The characters of assemblage are that the pollen of gymnosperm make up absolute predominance, content of pteridophytic spores are very low.

9. Contrary to common variation type in Angiosperms, the variation from high unsymmetric karyotype to low unsymmetric karyotype was found in existence in Gymnosperm.

10. By data collection of the database, we analyzed chromosome features of the group Gymnosperm.

11. Investigated the Huhhot 12 main road green space plant landscape present situation, The path afforests the tree seed to have 27 kinds, in which gymnosperm 5 kinds, the angiosperm 22 kinds.

12. Plastid of most angiosperms is uniparental maternal inheritance, yet a majority of gymnosperm is uniparental paternal inheritance.

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13. From the present results, we considered that tracheary elements that conduct water and mineral in ferns and gymnosperm are tracheids .

14. In Mesozoic, Guangdong flora had a big change, the gymnosperm was prosperous, but it was evolved from the late Paleozoic Cathaysian flora as a whole.

15. Guangdong flora became more complex and multiplex from the beginning of Tertiary. The angiosperm developed in mass and dominated instead of gymnosperm.