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FOC | Family List | FOC Vol. 2-3 | Polypodiaceae | Loxogramme

4. Loxogramme acroscopa (Christ) C. Christensen, Dansk Bot. Ark. 6: 48. 1929.

顶生剑蕨 ding sheng jian jue

Polypodium acroscopum Christ, J. Bot. 9: 75. 1905.

Rhizome creeping, slender; scales pale brown, lanceolate, margin entire, cells longer than width. Fronds distant, monomorphic; stipe slender, 2-3 cm; lamina linear-lanceolate, 4-6 × 0.3-0.4 cm, base decurrent to a winged stipe, apex bluntly acute; texture thin; costa raised adaxially, veins hidden. Sori 3-5 pairs, linear, very oblique, subparallel to costa, superficial, paraphyses absent. Spores globose-trilete.

On wet rocks by streams, possibly a seasonal rheophyte; 200-500 m. S Guizhou, SE Yunnan [N Vietnam].

Loxogramme acroscopa is similar to L. chinensis in characters of scales and spores and so might be an ecological form of the latter.


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