Tectaria semipinnata

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Tectaria semipinnata

Description

minute hairs present on both surfaces of costae only;

Distribution

Asia-Tropical:, Malaya (Peninsular Malaysia present) N Sumatra: present Peninsular Thailand: present
Peninsular Thailand; Malesia: Malay Peninsula and N Sumatra.

Taxonomy

This species appears to be closely allied to the fern of S China and Tonkin first named Gym- nopteris decurrens Hook. . The latter has smaller, firm, fronds, the stipe never winged and all sori running along veins, almost filling the lower surface. The type of Tectaria simulans Ching is somewhat intermediate between T. semipinnata and Gymnopteris decurrens, having fertile fronds like the former and a frond-form like the latter.

Cytology

Diploid (Manton in Holttum 1955: 626).

Citation

Morton - in Contr. U. S. Natl. Herb. 1974: 360
Bedd., Handb. Ferns Brit. India. 1883: 302
C. Chr. - in Gard. Bull. Straits Settlem. 1929: 393
Bedd., Handb. Ferns Brit. India. 1883: 392
Holttum - in Revis. FL. Malaya. 1955: (f. 302), 513, 626