Pyrrosia penangiana

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Pyrrosia penangiana

Description

Stellate hairs monomorphic, a sparse to dense mat, sometimes fugacious, brown, straight rays acicular.

Distribution

Asia-Tropical: Jawa (Jawa present); Lesser Sunda Is. present; Malaya (Peninsular Malaysia present); Sumatera (Sumatera present), Southwestern Indochina present
Southwestern Indochina. Malesia: Peninsular Malaysia, Sumatra, Java, Lesser Sunda Islands.

Anatomy

Anatomy:

Notes

1 Small forms have been confused with P. porosa, e.g. by Ching (1935). Pyrrosia penangiana can be recognised by the short rhizome with pseudopeltate, nearly entire scales, and by the strictly monomorphic indument. 2. Specimens from the drier, eastern part of the range are often more compact, and have a denser layer of hairs than specimens from the everwet western part.

Citation

Alderw., Malayan Ferns. 1908: 686
Hook., Gen. Fil. 1842: pl. 83
Hovenkamp - in Leiden Bot. Ser. 1986: 218
Backer & Posth., Varenfl. Java. 1939: 242
Dickason - in Ohio J. Sc. 1946: 129
Tagawa & Iwats. - in Acta Phytotax. Geobot. 1968: 52
Baker, Syn. Fil. 1867: 352
Alderw., Malayan Ferns. 1908: 688
Dickason - in Ohio J. Sc. 1946: 129
Holttum, Nov. Bot. Inst. Bot. Univ. Car. Prag. 1968: 31
Giesenh., Niphobolus. 1901: 97
Holttum, Nov. Bot. Inst. Bot. Univ. Car. Prag. 1968: 31