Dryopteris championii (Benth.) C. Chr. ex Ching
Etymology Named for John George Champion, English botanist, who collected in Hong Kong in the mid-1800s.
Description Rhizome: erect, massive, bearing several fronds in a tuft, scaly.
Frond: 90 cm high by 20 cm wide, evergreen, remains upright in winter, monomorphic, blade/stipe ratio: 3:2.
Stipe: straw-colored to brown, scales coppery to dark brown, more or less shining, bright, membranous, subtriangular-lanceolate to linear, 0.8--2 cm long, gradually narrowing towards filamentous tails; scales at stipe base to 2 cm long, vascular bundles: 3-7 in a c-shaped pattern.
Blade: 2-pinnate, ovate to oblong-ovate, acuminate at apex, leathery, glossy, scales on rachis dense, similar to those on stipes but smaller and darker.
Pinnae: 12 to 14 pair, basal pair anadromous; pinnules ovate to oblong-ovate, round to moderately acute at apex, auricled and shallowly cordate at base; costae grooved above, continuous from rachis to costae; veins free, forked.
Sori: round, submarginal to medial on pinnules, dispersed evenly on laminar surface, indusium: reniform, at a sinus, sporangia: brownish, maturity: late fall.
Culture Habitat: dry floor of forests, foot of lower mountains. Distribution: Japan, Korea and China. Hardy to -25C, USDA Zone 5.
Synonyms
Aspidium championi Benth
Dryopteris pseudo-erythrosora Kodama
Dryopteris championii
Dryopteris championii.  Illustration from The Cultivated Species of the Fern Genus Dryopteris in the United States, Barbara Joe Hoshizaki and Kenneth A. Wilson, American Fern Journal, 89, 1, (1999), with permission.
Notes
Variation The herbarium link above shows pinnules highly attenuated compared to other photos and the illustration here.
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