Common Name:

General Information

Drynaria roosii is an epiphytic, deciduous fern producing a clump of growth from a shortly-creeping rhizome around 10 - 20mm in diameter[]. Foliage fronds are around 5 - 8cm tall, fertile fronds can be 25 - 40cm[].
The plant is harvested from the wild for local use as a medicine. It is sometimes grown as an ornamental.

Known Hazards

None known

Botanical References

,

Range

E. Asia - southeast China, Thailand, Laos, Vietnam

Habitat

Epiphytic or epilithic, often on limestone, or on buildings; at elevations from 100 - 1,800 metres[].

Properties

Medicinal Rating
Habit	Deciduous Fern
Height	0.30 m
Cultivation Status	Cultivated, Wild

Cultivation Details

The rhizome is used in traditional Chinese medicine as a medicinal herb, known as a kind of 'Gu sui bu', a medicine more commonly derived from Davallia[].
Once dried, fertile fronds can be removed from the plant in the dormant season; the smaller, dried sterile fronds, however, should be allowed to remain, however, since they serve to trap leaves and other debris which rots down and feeds the plant[].

Edible Uses

None known

Medicinal

The rhizome possesses antiphlogistic and anodyne properties and has a beneficial effcct in the treatment of lumbago, arthritis, oslealgia, contusions, sprains, closed fractures, nephrosis, tinnitus, parodontosis and gingivitis[].
It is used externally in poultices applied on areas of inflammation
Rhizomes can be harvested all the year round. After all the radicles and scales have been removed from them, the rhizomes are cut into fragments, then well dried in the sun or in ovens[].

Other Uses

None known

Propagation

Spores -

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