Northeastern Asian Flora
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Asplenium ritoense Hayata   (redirected from: Asplenium davallioides Hook.)
Family: Aspleniaceae
[Asplenium davallioides Hook., moreHumata dareoidea Mett.]
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  • Japan Flora
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Japan Flora: Rhizomes short,

rather stout, ascending; stipes few together, green, flattened, sparsely scaly on the lower half, 7-20 cm. long, the scales linear-lanceolate, 3-6 mm. long, acuminate, spreading, dark brown, remotely few-spined; blades 2- or 3-pinnate, ovate to broadly so, 10-18 cm. long, 4-10 cm. wide, prolonged at the tip to a simply pinnate tail 1-4 cm. long, the rachis green, flat, with a rather broad slightly raised midrib on upper side; pinnae ascending, petiolulate the lower ones bipinnate to bipin- natiparted, larger, ovate-deltoid, 2.5-9 cm. long, 1-4 cm. wide, prolonged and simply pinnate at the tip, the petiolules 3-8 mm. long; pinnul效 thickly herbaceous, linear-oblong to lanceolate, 3- 5 mm. long, 1-1.5 mm. wide, subacute to obtuse, the apical mostly arcuately spreading, entire or rarely bifid, green on both sides, slenderly 1-veined; sori solitary on a pinnule; indusia 2-3(-4) mm. long. Moist shaded places.

Honshu (s. Kan to through Tokaido to s. Kinki Distr.), Shikoku, Kyushu. s. Korea (Quelpaert Isl.), Ryukyus, Formosa, and s. China.

Asplenium ritoense
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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