Pyrrosia angustata
Description
Stellate hairs dimorphic, forming a thin to thick mat, often fugaceous, light whitish brown, the straight upper rays boat-shaped to acicular.
Distribution
Asia-Tropical: Borneo present; Jawa (Jawa present); Malaya (Peninsular Malaysia present); Maluku (Maluku present); New Guinea present; Sumatera (Sumatera present), Peninsular Thailand present
Malesia: Peninsular Thailand, Sumatra, Peninsular Malaysia, Borneo. Rare in the Moluccas, doubtful records from Java and New Guinea.
Morphology
1 Older specimens may completely lose all indument, as well as the characteristically recurved acumens of the rhizome scales, and are then sometimes confused with P. serpens (an exclusively Pacific species).
2. Rarely, specimens occur with more than one row of sori between midrib and margin.
Citation
Alderw., Malayan Ferns. 1917: 413
Copel. - in Sarawak Mus. J. 1917: 410
Morton - in Contr. U.S. Nat. Herb. 1967: 339
Giesenh., Niphobolus. 1901: 193
Baker, Syn. Fil. 1867: 356
Copel., Fern Fl. Philipp. 1960: 470
Hovenkamp - in Leiden Bot. Ser. 1986: 156
Racib., Pterid. Buitenzorg. 1898: 100
Mett. - in Farngatt. 1856: pl. 3
Holttum - in J. Malay Br. As. Soc. 1928: 20
Hoshiz. - in Baileya. 1981: f. 1
Holttum - in Revis. Fl. Malaya. 1955: f. 58
J. Sm., Hist. Fil. 1875: 105
Copel. - in Sarawak Mus. J. 1917: 410
C. Presl, Epim. Bot. 1851: 126