Drynaria are tropical ferns found in Eastern and South Eastern Asia, commonly called the oak leaf fern.
Drynaria Sinica – oak leaf fern
The medium sized species are suitable indoors with adequate light because the foliage usually tolerates the drier air. During the dry season, or when the fronds become old the lobes are shed from the midrib, but the midrib itself remains attached to rhizome, sticking outwards like a ling spine. The green fronds may yellow when temperatures drop below 15C