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P. lepidocaulon resources
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Flora of JapanFlora of Japan
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���� acrostichoides aculeatum
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Polystichum lepidocaulon (Hook.) J. Sm.
Etymology Lepidocaulon comes from lepida, graceful or elegant + the Greek kaulon, a stem.
Description Rhizome: erect, short, bearing several fronds in a whorl, scales ovate to lanceolate, often more than 1 cm long, soft-textured, brownish.
Frond: 60 cm high by 15 cm wide, evergreen, monomorphic or weakly dimorphic, blade/stipe ratio: 2:1.
Stipe: grooved, straw-colored, darker at base, curving near its junction with the rachis, densely scaly, vascular bundles: 4 or more, in an arc.
Blade: 1-pinnate, lanceolate, the rachis sometimes extending beyond the blade and rooting, leathery, dull gray-green, smaller and irregularly margined scales on pinnae underneath.
Pinnae: 10 to 12 pair, eared upwards, falcate (curved upwards) to 8 cm x 2 cm; margins entire or dentate ; veins free, forked, or rarely netting.
Sori: round, 1-3 rows at each side of costae, on the sides of veins (unusual in the genus), indusium: peltate, small, shed early, central, sporangia: yellow or brownish to black.
Dimensionality: stipe curved so that the blade is held mainly horizontal.
Culture Habitat: among rocks or in mountain forests, often along seacoast. Distribution: Japan, Korea, eastern China. Hardy to -15�C, USDA Zone 7.
Distinctive Characteristics almost horizontal blade, gray-green or pewter-like color
Synonyms
Aspidium lepidocaulon Hook.
Cyrtomidictyum lepidocaulon (Hook.) Ching
Polystichum lepidocaulon
Polystichum lepidocaulon. �Photo: Hideto Araki, from the site Ferns in Japan, with permission.
Notes
Compare to P. lonchitis, similar, but in addition to the habit noted above, P. lonchitis has shorter pinnae, half the length here or less.
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