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Diplazium nipponicum

Tagawa

(no common name)

Athyriaceae

Diplazium nipponicum is a species of fern in the family Athyriaceae. It is native to southeastern China, Japan, and South Korea.

Description

Diplazium nipponicum is a medium to large plant that spreads via rhizomes. Rhizomes are covered with dark brown, narrowly lanceolate scales that are about 5 mm long and toothed. Leaves are 80 to 140 cm long on a 40 to 60 cm long, densely scaly stipe. The stipe is brown at the base and paler upwards, with a shallow groove on the upper side. Leaves are bipinnate-pinnatifid, 60 to 80 cm long and about 60 cm at the base, with a pointed tip. Leaves have 8 to 10 alternate, ascending pairs. Basal leaflets are the largest, broadly lanceolate, 40 cm long and 10 cm wide, with a wedge-shaped base and a pointed tip. Each leaflet has 10 to 12 pairs of alternate lanceolate subleaflets, that are 7 cm long and 2 cm wide. Subleaflets are finely toothed and pinnately lobed with 8 pairs. Blades are smooth on both sides. Each lobe has 2 to 4 linear, 2 to 6 mm long sori; they run down from the center of the lobe to the margins. Indusia are light gray and linear (Wu et al. 2013).

Uses

​Note: Please see the disclaimer regarding any information about medical or edible uses.

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Distribution

Diplazium nipponicum can be found in shaded areas (such as beside streams) in valley forests (Wu et al. 2013). It is native to Japan including South Iwo Jima, South Korea, and Zhejiang Province in China (Hassler and Schmitt 2019).

Status

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References

Hassler, M., and Schmitt, B. 2019. Checklist of Ferns and Lycophytes of the World. [accessed 2019 Jun 7]. https://worldplants.webarchiv.kit.edu/ferns/

Wu, Z. Y., Raven, P. H., and Hong, D. Y., eds. 2013. Flora of China. Vol. 2-3 (Lycopodiaceae through Polypodiaceae). Beijing: Science Press, and St. Louis: Missouri Botanical Garden Press.

Description
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