Arachniodes cavalerii (Christ) Ohwi

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Arachniodes

Characteristics

Rhizome ascending, woodlike stiff, apex scaly; scales yellow or dark brown, lanceolate, 1-2.5 × 0.2-0.4 cm, firmly papery, somewhat twisted clockwise. Fronds approximate, 0.5-1.1 m; stipe stramineous, 30-65 cm, 3-6 mm in diam., base moderately scaly, with scales similar to those on rhizome, glabrescent upward; lamina 3-pinnate, yellowish green when dried, ovate-deltoid, 25-50 × 20-35 cm, leathery, base cuneate or rounded-cuneate, apex acuminate and pinnatifid, rachis glabrescent; pinnae (1-)3-5-pairs, alternate, with 1-3 cm stalk, obliquely spreading, approximate; lowest pinna deltoid or oblong-deltoid, 15-28 × 10-15 cm, base broadly cuneate, apex acuminate; primary pinnules 5-9 pairs, with 0.5-1.5 cm stalk, obliquely spreading, basal basiscopic one ± longer than adjacent ones, lanceolate; secondary pinnules shortly stalked, deltoid-lanceolate, slightly falcate, 4-7 × 1.5-3 cm, base acroscopically oblique-truncate and auriculate, basiscopically cuneate, apex acuminate, caudate-acuminate, acute, or obtuse, margin pinnatifid, coarsely serrate, or crenate; lobes or serrations blunt or acute; upper pinnae triangular-lanceolate or lanceolate, often 1-pinnate; axes and veins of ultimate segments occasionally with sparse glandular hairs or minute brown scales abaxially. Sori dorsal on veinlets, 3-5(-7) pairs per ultimate segment, closer to midvein (of ultimate segment) than margin; indusia brown, membranous or thickening with age, entire, sometimes dorsally with glandular hairs.
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Growth form herb
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Foliage retention evergreen
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Root system rhizome
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Cultivation

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Distribution

Arachniodes cavalerii world distribution map, present in China and Thailand

Identifiers

LSID urn:lsid:ipni.org:names:17427480-1
WFO ID wfo-0001116819
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Byrsopteris cavalerii Aspidium cavalerii Arachniodes cavalerii Dryopteris sphaerosora Arachniodes pseudocavalerii Arachniodes sphaerosora Arachniodes acuminata Arachniodes obtusiloba Arachniodes baiseensis Arachniodes triangularis Arachniodes guangxiensis Dryopteris cavalerii Rumohra cavalerii Polystichopsis cavalerii