''Odontosoria biflora'' is a species of fern in the family

Lindsaeaceae Lindsaeaceae is a pantropical family of ferns in the order Polypodiales. It contains six or seven genera with about 220 known species, some of which also extend into the more temperate regions of eastern Asia, New Zealand, and South America.

. As with other species in the family, it has been placed in different genera;

synonyms A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ...

include ''Sphenomeris biflora'' and ''Sphenomeris chinensis'' ssp. ''biflora''. It is native to

Southeast China The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sepa ...

, Korea, Japan and its offshore islands, Taiwan, and the Philippines. The fronds are leathery in texture, with the final segments being wedge-shaped. In the northern Philippines, it is described as "common", being found on ridges and rocks at elevations of up to about 150 m. Known in parts of the Philippines by the Ivatan name ''tubho'', sun-dried leaves are used to make

tubho tea Tubho tea (sometimes spelled tubha), is a traditional herbal tea of the Ivatan people in the Philippines made from dried leaves of the tubho fern. Tubho fern Tubho tea is made from the tubho fern, ''Odontosoria biflora'', also known as ''Sphenom ...

References

Lindsaeaceae Flora of Southeast China Flora of Japan Flora of Korea Flora of Taiwan Flora of the Philippines Plants described in 1824 {{Polypodiales-stub