Athyrium exindusiatum Ching
  • Acta Bot. Boreal.-Occid. Sin.

Cite taxon page as 'WFO (2020): Athyrium exindusiatum Ching. Published on the Internet; Accessed on: 19 Jan 2020'

General Information

Fertile fronds up to 1 m; stipe upward stramineous, ca. 50 cm, 3-4 mm in diam., base clothed with brownish, lanceolate large scales, upward glabrate; lamina 2-pinnate, oblong, ca. 65 × 20-30 cm, base as wide as above, apex long acuminate; pinnae 20-22 pairs, alternate, ascending, shortly stalked (stalk ca. 1.4 mm); basal pinnae not shortened and not narrowed toward base, lanceolate, (15-)25-28 × 5-8 cm, base rounded-cuneate, pinnate-pinnatifid, apex long acuminate; pinnules ca. 25 pairs, alternate, ascending, subfalcate-lanceolate, 3.5-4 cm × 8-10 mm at base, base inequilateral, acroscopic side truncate, somewhat auriculate, parallel to costae, basiscopic side cuneate, adnate to costa, pinnatilobate to pinnatipartite (to 2/3 to costule), apex acuminate; pinnule segments 8 or 9 pairs, oblong, basiscopic basal segments smaller, long toothed, apex often deltoid; upper pinnae lanceolate, acroscopic base truncate, parallel to rachis, basiscopic base broadly cuneate, sessile, slightly curved upward, margin biserrate, apex long acuminate. Veins inconspicuous adaxially, visible abaxially, pinnate in segments, 3 or 4 pairs, oblique, simple. Lamina papery when dried, glabrate, dark green adaxially, pale green abaxially. Rachis and costae stramineous, glabrate abaxially, with very short spines on adaxial surface. Sori orbicular, abaxial on veins, 1-3 pairs per segment, exindusiate. Perispore surface with prominent folds.

  • Provided by: [B].Flora Of CHina @
    • Source: [
    • 1
    • ]. 

     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora Of CHina @
    'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Missouri Botanical Garden
    World Flora Online consortium
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).