Asplenium cordatum (Thunb.) Sw.
  • J. Bot. (Schrader)


Cite taxon page as 'WFO (2020): Asplenium cordatum (Thunb.) Sw. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001043832. Accessed on: 27 May 2020'

Diagnostic Description

Fronds always pinnate, with stronger, rigid rachis; pinnae free from rachis (petiolulate), with flared to somewhat auriculate/cordate base, abaxially very densely covered with overlapping, broadly deltate scales; sori small, discrete.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

    Morphology

    Rhizome erect, short, up to 4 mm in diameter, set with dark brown, irregularly fimbriate rhizome scales. Undersurface of pinnae set with dense imbricate scales, upper surface glabrous. Pinnae narrowly oblong, up to 28 x 9 mm, venation obscure. Sori linear, borne in 2 rows alongside and at an angle to costa; smaller sori also borne on pinnatifid segments.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Terrestrial or epilithic. Rhizome short, erect or procumbent, with shining lanceolate scales. Fronds tufted, suberect, pinnate, lamina oblanceolate, 25-240 x 9-85 mm, basal pinnae reduced, glabrous adaxially, densely covered with pale brown, overlapping scales abaxially, texture thinly coriaceous, involute when dry; pinnae oblong-lanceolate, free from rachis, margins sinuate to crenate; rachis and stipe blackish, with shining, lanceolate scales. Sporangia in linear sori, obscured by scales.

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

    Rhizome to 3-6 mm diam., erect or procumbent; scales sessile, clathrate, very narrowly lanceolate, 2-3 x 0.5-0.6 mm, acuminate, frequently with a hair point, irregularly serrate, bicolorous, chestnut-brown distally, brown proximally, with paler margin throughout, with narrowly oblong to ovate cells. Fronds tufted, suberect to erect; stipe (10-)17-40(-60) mm long, dark chestnut-brown, densely scaled when young, becoming subglabrous with age, scales sessile, lanceolate, 3.0-3.5 x 0.7-0.9 mm, acuminate, irregularly serrate, glossy, sometimes bicolorous, chestnut-brown, sometimes with narrow paler margin, with oblong to ovate cells; lamina subcoriaceous, involute and inrolled when dry, elliptic or narrowly elliptic to oblanceolate in outline, shallowly to very deeply 2-pinnatifid, sometimes 2-pinnate, (20-)50-120(-150) x (10-)15-40(-50) mm, basal pinnae gradually decrescent; rachis not winged between pinnae, scales as for stipe but lanceolate, 3.0 x 0.9 mm; pinnae (4-)6-19(-30) x (2-)3-7(-13) mm, free from rachis (petiolulate), with flared to ± auriculate-cordate base, narrowly oblong to oblong-lanceolate, bluntly acute, margin irregularly scalloped to incised, glabrous above at maturity, abaxially very densely scaled, scales sessile, deltate, ± 2.0 x 1.5 mm, attenuate, serrate, glossy, light reddish brown, with short roundish to oval cells; sori linear along (obscure) veins, up to 2 mm long, exindusiate, almost totally obscured by scales.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

    Perennial with short rhizome. Fronds to 14 cm, caespitose, suberect or appressed on ground, thinly coriaceous, involute when dry, stipe densely scaled, lamina elliptic to narrowly elliptic, pinnatifid to 2-pinnatifid, pinnae narrowly oblong, weakly undulate, densely scaled beneath. Sori linear, indusium obsolete.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 5
    • ]. 

    Perennial with short rhizome. Fronds in a tuft, suberect, thinly leathery, involute when dry, stipe densely scaled, lamina elliptic to narrowly elliptic, 1-pinnate-pinnatifid, pinnae narrowly oblong, weakly undulate, densely scaled beneath. Sori linear, mostly obscured by scales, apogamous.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 6
    • ]. 

    Rhizome up to 4 mm in diameter, set with lanceolate-acuminate, dark brown, irregularly fimbriate rhizome-scales c. 3.5 mm long, frequently hair-pointed. Fronds tufted, suberect, not gemmiferous, thinly carnose-coriaceous, involute when dry; stipe atrocastaneous, nitid, very much shorter than lamina, densely set with ovate-lanceolate acuminate scales up to 5 mm long; lamina elliptic to narrowly elliptic, rarely up to 240 x 85 mm, pinnatifid or pinnate, to 2-pinnatifid or 2-pinnate, lower pinnae gradually decrescent; pinnae narrowly oblong, up to 28 x 9 mm, adnate to auriculate, weakly undulate to pinnatifid with broadly oblong crenate segments, upper surface glabrous, lower surface densely set with ovate-acuminate to lanceolate, imbricate, nitid, pale brown, irregularly fimbriate scales; venation obscure. Sori linear, up to 2.5 mm long, borne in two rows alongside and at an angle to costa, and smaller sori also borne on pinnatifid segments.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 7
    • ]. 

    Habitat

    Boulder bases and under bushes.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 1
    • ]. 

    Vredefort Dome Savanna; Kalahari Deciduous Acacia-wooded Grassland; Dry Grassland; Mesic Grassland; Dwarf Karroid Shrubland; Zastron Moist Grassland. Rock crevices and boulder bases.

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

    It occurs in rocky crevasses in exposed, hot, and dry habitats, often at the base of boulders, well away from water.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

    Rock crevices and boulder bases in drier situations, 200-400 m.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 5
    • ]. 

    In shaded rock crevices and at boulder bases, 840-1600 m.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 6
    • ]. 

    Drier parts where it usually occurs around boulder bases, under bushes or in south aspect rock crevices, 200-2575 m.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 7
    • ]. 

    Distribution

    Asplenium cordatum is widespread in South Africa, Lesotho, Swaziland, Namibia, Botswana, and Zimbabwe; also in Angola, Tanzania, Kenya, Uganda, and Ethiopia.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

    Bokkeveld Mtns to E Africa and Madagascar.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 5
    • ]. 

    Southern Namibia to Prince Albert, widespread in southern Africa.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 6
    • ]. 

    Kenya, Tanzania, Zimbabwe, Madagascar and widespread in Southern Africa.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 7
    • ]. 

      Bibliography

    • 1 Herman, PPJ; Retief, E. 1997. Plants of thenorthern provinces of South Africa: keys and diagnostic characters. Strelitzia 6: 1 - 681. National Botanical Institute, Pretoria.
    • 2 J. Bot. (Schrader)
    • 3 Klopper, RR. 2017. Pteridophyta. In: E Retief & NL Meyer (eds), Plants of the Free State: Inventory and identification guide. Strelitzia 38: 114 - 143. South African National Biodiversity Institute, Pretoria.
    • 4 Klopper, RR; Crouch, NR. 2012. Recircumscription and distribution of elements of the ‘Ceterach cordatum’ complex (Asplenium: Aspleniaceae) in southern Africa. Bothalia 42(1): 15 - 20.
    • 5 Roux, JP. 2012. Pteridophytes. 31 - 47. South African National Biodiversity Institute, Pretoria.
    • 6 Roux, JP. 2013. Monilophytes. 26 - 30. South African National Biodiversity Institute, Pretoria.
    • 7 Schelpe, EACLE; Anthony, NC. 1986. Pteridophyta. In: O.A. Leistner (ed.). Fl. S. Africa : 1 - 278.

     Information From

    Aspleniaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • B All Rights Reserved
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).