Osmunda javanica - AbsoluteAstronomy.com

Osmunda javanica is a fern in the genus Osmunda
Osmunda
Osmunda is a genus of primarily temperate-zone ferns of family Osmundaceae. Five to ten species have been listed for this genus.The species have completely dimorphic fronds or pinnae , green photosynthetic sterile fronds, and non-photosynthetic spore-bearing fertile pinnae, with large, naked...

, section Plenasium.

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