Deparia - Woodsiaceae

Deparia japonica (Thunb.) M.Kato






Asplenium japonicum Thunb.
Diplazium japonicum (Thunb.) Bedd.
Athyrium japonicum (Thunb.) Copel.
Lunathyrium japonicum (Thunb.) Sa. Kurata
Athyriopsis japonica (Thunb.) Ching

Common name

Black lady fern.


Rhizome short-creeping, branching, scaly. Fronds deciduous, somewhat dimorphic, the fertile ones taller, narrower, more erect. Stipe green or straw-coloured, shallowly grooved above, swollen or not at base, densely scaly at base, upwards along with rhachises scaly and multicellular-hairs. Lamina pinnate-pinnatifid, oblong-lanceolate in outline, apex gradually tapering to a point, sometimes slightly narrowed toward base, herbaceous, multi-cellular hairs along costae, rhachis. Pinnae 12 to 16 pairs, linear to linear-lanceolate in outline, to 12 x 2.5 cm, halfway or deeply pinnatifid; costae grooved above, discontinuous with the rhachis; margins toothed or lobed, blunt or pointed at the tip; veins free. Sori elongate, ± straight, or hooked at distal end, to 5 mm long, on veins, arranged generally in a herringbone pattern; indusium linear, persistent, brown.




japonica: Japanese.


Woodland, lowlands, foothills.

Distribution worldwide

Himalayas, Malaysia, Vietnam, China, Korea, Japan, eastern Siberia.

Distribution in Africa

South Africa, Swaziland.

Growth form



  • Roux, J.P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23, South African National Biodiversity Institute, Pretoria. Page 216.
  • Stuart, T. (2004-) Hardy Fern Library. Published on the internet: Page 0. (Includes a picture).