Trematodon mayottensis Besch.
  • Ann. Sci. Nat., Bot., sér. 7,


Cite taxon page as 'WFO (2020): Trematodon mayottensis Besch. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001158064. Accessed on: 29 Oct 2020'

Diagnostic Description

Specimens of Rehmann 22 in South African herbaria, are T. mayottensis, while the specimen at BM is T. longicollis (Dixon in Sim corresp. in PRE as T. africanus). Trematodon mayottensis is separated from other species of Trematodon in Southern Africa, by its broad leaves and obtuse apices.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Morphology

    Plants small, gregarious or in loose tufts, light green; terricolous. Stems (l-)2-3 mm high, simple; in section central strand large, cortical cells large, becoming incrassate toward margin. Leaves contorted dry, erect-spreading wet; lanceolate to ovate-ligulate, 1.0-1.6 mm long; apex obtuse to rounded; margins weakly reflexed, entire to crenulate above, bistratose; in section marginal cells rounded, smaller than rectangular laminal cells. Costa ending below apex to subpercurrent; in section flattened, cells not strongly differentiated, guide cells somewhat larger, ventral cells in single layer, thin-walled, dorsal substereid band 1-2 cells thick, cells variable in size and thickening occasionally only incrassate, dorsal surface cells similar to ventral cells. Laminal cells smooth, short-rectangular to quadrate, thin-walled; basal cells larger, rectangular, lax. Perichaetial leaves not differentiated. Seta erect, 3 mm long, yellow-brown; capsule erect, yellow-brown, urn short-cylindrical, 1.8-2.0 mm long, neck 1 mm long, strumose at base; peristome reddish yellow, teeth triangular, to 240 µm high, irregularly perforated, with vertical bars below, apical segments free, papillose, hyaline; operculum long-beaked, 0.6 mm high; calyptra cucullate; spores subreniform, 22-27 µm, papillose.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Plants small, gregarious or in loose tufts. Stems 1-3 mm long. Leaves contorted when dry, erect-spreading when wet, narrowly ovate to ovate-ligulate, 1.0-1.6 mm long; apex obtuse to rounded; margins entire to crenulate above, bistratose; costa subpercurrent. Laminal cells short-rectangular to quadrate; basal cells larger, lax. Capsule erect, urn short-cylindrical, neck strumose at base; peristome reddish yellow, teeth triangular, apical segments free. Spores subreniform, papillose.

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

    Habitat

    Terricolous.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Mesic Grassland. On soil.

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

    Distribution

    In Southern Africa T, mayottensis is known from Oakford in Natal and Wolhuter Kop in the Orange Free State. The type is from Mayotte Island; additional specimens have been collected in Zimbabwe.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

      Bibliography

    • 1 Ann. Sci. Nat., Bot., sér. 7,
    • 2 Magill, RE. 1981. Ditrichaceae to Grimmiaceae. In: O.A. Leistner. Fl. S. Africa Bryophyta(1,1): 83 - 281.
    • 3 van Rooy, J; Retief, E; Meyer, NL. 2017. Bryophytes. In: E Retief & NL Meyer (eds), Plants of the Free State: Inventory and identification guide. Strelitzia 38: 30 - 88. South African National Biodiversity Institute, Pretoria.

     Information From

    Bruchiaceae
    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).