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FOC | Family List | FOC Vol. 2-3 | Athyriaceae | Deparia

17. Deparia hirtirachis (Ching ex Z. R. Wang) Z. R. Wang
[comb. nov.]

毛轴对囊蕨 mao zhou dui nang jue

Basionym: Lunathyrium hirtirachis Ching ex Z. R. Wang, Acta Phytotax. Sin. 32: 87. 1994.

Rhizomes erect, densely scaly at their apices and stipe bases; scales dark brown, ovate-lanceolate, up to 1.5 cm, membranous. Fronds caespitose; fertile fronds ca. 80 cm; stipe stramineous to pale brownish, ca. 15 cm, 3-4 mm in diam., base densely scaly, upward densely clothed with narrowly lanceolate scales and brownish multicellular long hairs; lamina pinnate-pinnatipartite, narrowly oblong, ca. 65 × 20 cm, gradually narrowed toward base, apex acuminate; pinnae 20-30 pairs, middle pinnae alternate, ascending, 2-3 cm apart, linear-lanceolate, up to 10 × ca. 1.8 cm, base subtruncate, pinnatipartite, apex acuminate, 5 or 6 pairs of lower pinnae gradually shortened to base, lanceolate; basal pinnae auriculate, 1-2 cm, basiscopic side broader; pinna segments 20 pairs or more, approximate, spreading, oblong, ca. 8 mm, adnate to broad wings of costae, toothed at margin, apex rounded. Veins on abaxial side visible, pinnate in segments, 5-7 pairs, simple. Lamina herbaceous when dried, rachis and costae with rather dense multicellular long hairs on both surfaces, veins with sparse brownish, hyaline multicellular long hairs on both surfaces, with few short multicellular hairs at sinus between pinna segments. Sori oblong, medial on veins, 3 or 4 pairs per segment, ca. 1 mm; indusia similar to sori, brown, slightly bulging, ciliate-lacerate at margin, persistent. Spores bilateral, perispore surface with few low continuous folds.

Evergreen forest margins, streamsides, damp areas; 2400-3900 m. NW Yunnan [NW Myanmar].

Deparia hirtirachis is similar to D. dolosa in shape but differs by the spore surface with few continuous folds and no auriculate lobelike processes, stipe and rachis with dense multicellular long hairs and scalelike hairs, and lamina with multicellular long hairs on both surfaces.


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