Trematodon pillansii Dixon
  • Trans. Roy. Soc. South Africa


Cite taxon page as 'WFO (2020): Trematodon pillansii Dixon. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001158084. Accessed on: 05 Apr 2020'

Diagnostic Description

The small size of these plants, prorate leaf cells, absence of peristome and the large spores are diagnostic for this species. These characters also indicate that T. pillansii is not closely related to the other Southern African species.

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

    Morphology

    Plants very small, gregarious, yellowish green; saxicolous or terricolous. Stems to 1 mm high; in section central strand very small, cortical cells incrassate, slightly smaller toward margin, reddish. Leaves spreading wet and dry; oblong to oval, subulate, 1.0-1.5 mm long; apex obtuse; margins crenate, dentate at apex; lamina bistratose above. Costa ending below apex; in section guide cells 4, central, ventral cells in 1-2 layers, strongly incrassate, dorsal cells in 2-3 layers, substereids or strongly incrassate. Laminal cells rectangular, occasionally quadrate at shoulders, proximal and distal ends prorate; basal cells larger, rectangular, smooth Perichaetial leaves oval, abruptly ligulate, 2.5 mm long; base sheathing. Seta erect, 4-5 mm long, yellow; capsule erect, yellowish, urn 1.0-1.2 mm long, neck 1.5-2.0 mm long, without stroma, exothecial cells short, hexagonal; peristome absent; operculum rostrate, 0.5 mm high; calyptra covering upper urn; spores round, 70-75 µm, proximal face with tetrad ridge, distal face with C-shaped papillae.

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

    Habitat

    The species grows on shallow soil and bare rock in the fynbos biome.

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

    Distribution

    Described from the Cape Peninsula, T. pillansii is endemic to the southwestern Cape.

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

      Bibliography

    • 1 Magill, RE. 1981. Ditrichaceae to Grimmiaceae. In: O.A. Leistner. Fl. S. Africa Bryophyta(1,1): 83 - 281.
    • 2 Trans. Roy. Soc. South Africa

     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).