Tapeinidium luzonicum (Hook.) K.U.Kramer

Rhizome usually short-creeping, to 4 mm ø; scales golden brown, narrowly triangular, long-acuminate, to 4 mm long. Petioles about as long as to twice as long as the lamina, abaxially terete at the base, in the upper half or less often only near the apex obtusely to acutely bi-angular, flat or usually sulcate. Lamina oblong, narrowly oblong, triangular, or occasionally subpentagonal, at least once pinnate + pinnatifid. Primary rachis stramineous or pale brown, abaxially sharply carinate. Secondary rachises (costae) abaxially elevated, sharply carinate, pale. Upper pinnae and pinnules (segments) gradually reduced, confluent. Sori uninerval. Spores pale brown, ellipsoidal, smooth, c. 40 by 28 μ.