Gleichenia subg. Diplopterygium

Primary tabs

Gleichenia subg. Diplopterygium

Distribution

Asia-Temperate, Asia-Tropical, Burma present, Japan present, Malaysia present present, NE. India present, Pacific: Hawaii present, Polynesia present, tropical America present
More than 20 spp. in NE. India, Burma and Indo-China, China, Japan, Malaysia, Polynesia, Hawaii, and tropical America (1 sp.). This subgenus is far more diversified in Malaysia than elsewhere.

Notes

Some fossils of Cretaceous age in West Greenland (lat. 70-71°N) have exactly the characters of this subgenus (habit of branching, venation, position of sori, nature of sporangia).

Citation

Copel. 1947: Gen. Fil.: 28