The recent flora of China, one of the richest in the world, is a mixture of northern temperate elements and tropical to (northern) subtropical elements.It is characterized by many relic genera and has a close floristic relations!ip with that of eastern North America.As to the relicts, in ferns there are Angiopteris and Archangiopteris; in gymnosperms, Ginkgo, Metasequoia, Cephalotaxus, Amentotaxus, Tor-Liriodendron, Schisandra, Nelumbo, E uptelea, Eucommia Cercidiphyllum, Aralia, Nyssa, and Menispermum.Most of them are relic genera of the Late Cretaceous.Europe by Florin (1958); Metasequoia was quite abundant in the Late Cretaceous and the Late Eocene of northeastern China.Metasequoia, Glyptostrobus, Cryptomeria, C unninghamia, Cephalotax-' I am especially grateful to D I. Axelrod for critical comments on the manuscri ?[nstitute of Botany, Academia Sinic ANN.Missouri Bor.Garp.70
No takes yet. Share an insight, caveat, or question.
Jen Hsü (1983) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: