Tectaria beccariana

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Tectaria beccariana

Description

Very near Tectaria vasta (Blume) Copel., differing in firmer texture of fronds with all veins prominent on lower surface, wider wing on stipe (to 2 cm wide on each side) and rachis, wider lamina-lobes on largest fronds (to 10 cm wide), basal ones of large fronds always with a large basiscopic lobe, sori exindusiate or rarely with very small indusia.

Distribution

Asia-Tropical:, Borneo present (Sabah present); New Guinea present; Philippines (Philippines present) Luzon: present Mindanao: present Negros: present SE Celebes: present Samar: present
Malesia: Borneo (Sabah), Philippines (Luzon, Negros, Samar, Mindanao), SE Celebes, widely in New Guinea.

Taxonomy

The relationship of this species to T. vasta needs experimental study. The widely distributed indusiate T. vasta must be the more primitive of the two; it does not occur in Taiwan, so that the Philippine T. beccariana may be an eastern development from T. vasta in Vietnam. In Sabah are possible hybrids between the two species.

The type of T. celebica is an immature plant; the lamina of its largest frond is 50 × 9 cm with entire or subrepand margins, fertile, with sori as in T. beccariana.

Citation

Copel. - in Philipp. J. Sci. 1951: 419
C. Chr. - in Dansk Bot. Ark. 1937: 51
Copel. - in Philipp. J. Sci. 1907: Bot. 412
C. Chr., Fern Fl. Philipp. 1960: 308