Brachymenium acuminatum Harv.
  • Icon. Pl.


Cite taxon page as 'WFO (2020): Brachymenium acuminatum Harv. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001154690. Accessed on: 02 Jun 2020'

Diagnostic Description

The glossy, light green, concave leaves, with lax, elongate upper leaf cells and generally strongly differentiated basal cells will separate G. acuminatum from other species of the genus. Although the leaf is generally concave, above the base, when cut in cross-section the entire lamina is broadly recurved. This is apparently due to a slight thickening of the dorsal cell facies.

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

    Morphology

    Plants small, forming loose turfs, light green to yellowish green, glossy; terricolous. Stems (2-)5-10 mm long, sparsely radiculose below; in section cortical cells in 2-4 rows. Leaves erect-appressed, little altered dry, concave; ovate to ovate-acuminate or ovate-lanceolate, 0.5-0.8 mm long; apex acute to acuminate; base flat, not concave; margins erect, entire. Costa short-excurrent, mucro 0.1-0.2 mm long; in section subround, ventral cells 2, large, thin-walled, dorsal substereid band 2 cells thick, dorsal surface cells undifferentiated. Upper laminal cells mostly 6-10: 1, fusiform to linear-rhomboidal, ± sinuolate, (50-)75-150 µm long, 12-18 µm wide, dorsal surface weakly thickened; basal cells generally distinct,quadrate to short-rectangular, 1-2: 1, thin-walled. Perichaetial leaves triangular, ± 1 mm long. Seta (6-)10-15(-22) mm long, yellowish; capsule suberect to inclined or almost horizontal, clavate to cylindrical-pyriform or occasionally smaller and pyriform, 2.5-3.5 mm long, yellowish, neck sulcate, to 1 mm long; exothecial cells subrectangular, walls ± wavy, 1-2 rows of transversely rectangular cells at mouth; peristome teeth 200-300 µm long, endostome with basal membrane 175-200 µm high, segments rudimentary; spores round, 16-18 µm, green, weakly papillose.

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

    Plants in loose turfs, yellowish green, glossy. Stems 2-10 mm long. Leaves erect-appressed, concave, ovate to ovate-acuminate, 0.5-0.8 mm long; margins entire; costa short-excurrent. Upper laminal cells fusiform to linear-rhomboidal; basal cells distinct, quadrate to short-rectangular. Capsule inclined to horizontal, clavate to cylindrical-pyriform; endostome segments rudimentary. Recognised by the light green, glossy plants with concave leaves, lax, elongate upper laminal cells and strongly differentiated basal cells.

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

    Habitat

    Dry Grassland; Mesic Grassland; Zastron Moist Grassland. On soil or rock.

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

    Distribution

    Brachymenium acuminatum has been reported from eastern and southern Africa, South America, India, southeast Asia and Australia. In southern Africa the species is found in the northern, central, southern and eastern Transvaal, Swaziland, Natal and Lesotho. A few specimens have also been collected in the northwestern and southwestern Cape, eastern Orange Free State, central South West Africa/Namibia and Botswana.

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

    Distribution Map

     
    • Native distribution
    Found in
    • Southern America Brazil Minas Gerais

      Bibliography

    • 1 Icon. Pl.
    • 2 Magill, RE; van Rooy, J. 1987. Bryaceae. Fl. S. Africa (1,2): 335 - 393.
    • 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

    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    http://floradobrasil.jbrj.gov.br
    Brazil Flora G (2014): Brazilian Flora 2020 project - Projeto Flora do Brasil 2020. v393.147. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro. Dataset/Checklist. doi:10.15468/1mtkaw
    • A Group Brazil Flora, REFLORA Program
    Bryaceae
    World Flora Online Data. 2017.
    • B 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
    • C All Rights Reserved
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).