Arachniodes speciosa (D.Don) Ching
  • Acta Bot. Sin. 10: 259 (1962)


Cite taxon page as 'WFO (2023): Arachniodes speciosa (D.Don) Ching. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001118512. Accessed on: 28 Mar 2023'

General Information

Rhizome shortly creeping, often stiff, densely scaly; scales brown or dark brown, linear-lanceolate or subulate, 8-15 × 0.5-1.5 mm, base slightly dentate or ciliate, apex attenuate, margin entire, firmly membranous. Fronds approximate, 0.5-1.1 m; stipe (ochraceous or) stramineous, 27-60 cm, 3-4 mm in diam., base with scales similar to those on rhizome, upward sparser and often entire-margined, or ± glabrescent; lamina 3- or 4-pinnate, brownish when dried, ovate-oblong or ovate-deltoid (or ovate-pentagonal), 25-50 × 18-35 cm, papery or subleathery, base rounded or shallowly cordate, apex acuminate or narrowly deltoid, rachis scaly or glabrescent as distal portion of stipe; pinnae ca. 10 pairs, alternate or lower 1(-3) pairs opposite, with to 2 cm stalk, obliquely spreading; lowest pinnae deltoid or obliquely quadrangular, to 25 × 15 cm, base broadly cuneate, apex acuminate; primary pinnules ca. 16 pairs, deltoid-lanceolate or oblong, proximal basiscopic 1(or 2) slightly longer (to 13 × 4.5 cm), base broadly cuneate, apex acuminate; secondary (and tertiary) pinnules shortly stalked or sessile, oblong or rhombic, ca. 1.5 × 0.7 cm, base acroscopically truncate, slightly auriculate, basiscopically cuneate, apex acute or obtuse, margin sharply serrate or pinnatifid, often aristate; upper pinnae often oblong-lanceolate; axes of lamina, pinnae, and pinnules with sparse minute (ovate- or) lanceolate apical threadlike scales abaxially. Sori terminal (or subdorsal) on veinlets, 1-5 pairs per ultimate segment, medial between midvein and margin; indusia brown, membranous, entire, and fugacious. 2n = 82*.

  • Provided by: [C].Flora of China @ efloras.org
    • Source: [
    • 1
    • ]. 

    Rhizome short, erect or ascending; scales dense, linear, up to 2 cm or more long, 1.5 mm broad at base, brown, entire, more or less crisped in linear apical portion. Stipe stramineous, densely scaly at base, more sparsely upwards, up to 1 m long; scales on upper part smaller and narrower, dark. Lamina oblong-subdeltoid, more than 80 by 50 cm, tripinnate; rachis scaly, grooved; pinnae gradually reducing in size upwards, the lowest the largest, middle pinnae falcate, oblong-subtriangular, gradually narrowing towards acuminate apex, distinctly stalked, up to 30 by 12 cm at base; pinna-rachis densely fibrillose scaly; pinnules oblong-subdeltoid, caudate-acuminate at apex, unequally cuneate at distinctly stalked base, 5–7 by 1.5–2 cm; segments oblong-lanceolate to subquadrangular, oblique or slightly falcate, acute to acuminate, crenate at margin, about 1.2 by 0.4 cm; chartaceous, deep green, fibrillose scaly, glabrous on lamina surfaces. Sori terminal on veinlets, closer to midrib than to margin of segments, round; indusia round-reniform, glabrous.

  • Provided by: [B].e-Flora of Thailand
    • Source: [
    • 3
    • ]. 

    Ecology

    On rather dry mountain slopes in mixed or in evergreen forests at medium altitudes.

  • Provided by: [B].e-Flora of Thailand
    • Source: [
    • 3
    • ]. 

    Distribution

    Thailand, Himalaya (type) to SW. China and Vietnam.

  • Provided by: [B].e-Flora of Thailand
    • Source: [
    • 3
    • ]. 

    Distribution Map

     
    • Introduced distribution
    Introduced into
    • Asia-Tropical Indo-China Thailand

     Information From

    e-Flora of Thailand
    https://www.dnp.go.th/botany/eflora/aboutus.html
    Chayamarit, K. & Balslev, H. (eds.) (2019). Flora of Thailand. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
    • A All Rights Reserved
    • B Forest Herbarium All rights reserved
    Flora of China @ efloras.org
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Missouri Botanical Garden
    Polypodiaceae
    http://www.worldfloraonline.org/organisation/Polypodiaceae
    World Flora Online Data. 2021.
    • D CC0 1.0 Universal (CC0 1.0).