Tectaria decurrens
Distribution
Asia-Tropical: New Guinea present; Philippines (Philippines present), Perak present, W Malay Peninsula present, in the Pacific eastwards to Tahiti present, tropical mainland Asia present
Widely in tropical mainland Asia; Malesia: W Malay Peninsula (in Perak only), Philippines, New Guinea; in the Pacific eastwards to Tahiti.
Morphology
Young plants collected by M. G. Price in Luzon have unlobed linear fronds to about 30 cm long; such fronds may be ferule, the smallest fertile ones seen 9 cm long.
Taxonomy
In the Philippines and in New Guinea are intermediates between this species and T. repanda; they have narrow fertile pinnae decurrent to a narrow wing on the rachis and a short stipe-wing.
Cytology
T. G. Walker found that three plants in New Guinea were diploids; Manton found tetra- ploids in Sri Lanka. Structural differences between diploid and tetraploid have not been established.
Citation
Bedd. 1863: Ferns S India: pl. 82
Holttum 1963: Revis. Fl. Malaya, ed. 2: 635
Sledge 1972 – In: Kew Bull.: 420
Racib. 1898: Pteridop. Buitenzorg: 196
Molesworth Allen 1967: p. 177. – In: Gard. Bull. Sing.: with photo
Ching 1931 – In: Sinensia: 22
Bedd. 1883: Handb. Ferns Brit. India: 219
Copel. 1960: Fern Fl. Philipp.: 315
Backer & Posth. 1939: Varenfl. Java: 73
Holttum 1969 – In: Novit. Bot. Delect. Seminum Horti Bot. Univ. Carol. Prag.: 9
Mett. 1858 – In: Farngatt.: 120
Alderw. 1908: Malayan Ferns: 247
Holttum 1981 – In: Gard. Bull. Sing.: 139