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FOC | Family List | FOC Vol. 2-3 | Pteridaceae | Haplopteris

10. Haplopteris sikkimensis (Kuhn) E. H. Crane, Syst. Bot. 22: 514. 1998.

锡金书带蕨 xi jin shu dai jue

Vittaria sikkimensis Kuhn, Linnaea 36: 66. 1869.

Plants very small. Rhizome very slender, shortly creeping or ascending; scales pale-brown, bright iridescent, subulate-lanceolate, 2-4 × 0.25-0.5 mm, marginal row of areole thin-walled, middle areole wall thick, dark colored; margin minutely denticulate, apex long bristlelike. Fronds clustered; stipe short, slender, appressed; lamina thinly herbaceous, linear, (1.5-)4-6(-12) cm × (0.5-)1(-1.5) mm, margin slightly revolute, apex acute or rounded, base long attenuate; costa invisible adaxially, raised abaxially, wide, flattened. Soral line deeply immersed in groove, covered by costa, occupying area between costa and margin when mature; paraphyses long, with head obconic, longer than wide. Spores monolete, elliptic in outline, surface sparsely papillate.

Epiphytic or epilithic in evergreen broad-leaved forests, mixed with Leucobryum; 1400-2200 m. SE Xizang, S, SE, and W Yunnan [N India, Myanmar, N Thailand, N Vietnam].


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