''Odontosoria biflora'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

fern A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except t ...

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 Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...

, and the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

. 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

by the Ivatan name ''tubho'', sun-dried leaves are used to make tubho tea.

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