Bartramia compacta var. macowaniana (Müll. Hal.) Magill
  • Fl. S. Africa, Bryophyta


Cite taxon page as 'WFO (2020): Bartramia compacta var. macowaniana (Müll. Hal.) Magill. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001195266. Accessed on: 28 Nov 2020'

Diagnostic Description

Gametophytically this variety is indistinguishable from the typical variety. It is provisionally maintained at the rank of variety on the basis of its consistently short seta. This results in emergent capsules which are `nestled' in the leaves along the stem and give the plants a rather distinctive appearance. The geographical isolation of the population is also interesting, however the plants have only been collected twice, in 1877 and 1921.

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

    Morphology

    Plants small, caespitose, yellow-green to light green or glaucous green; terricolous. Stems mostly less than 5 mm long, radiculose below; in section round, central strand large, inner cortical cells in 3-4 rows, large, thin-walled, outer cortical cells in 1-2 rows, smaller, weakly thickened, yellow-brown, epidermis not differentiated or outer walls not as strongly thickened. Leaves erect dry, erect-spreading to widespreading wet; linear-lanceolate, (2.0) 2.5-3.0 mm long, lamina unistratose; apex acuminate; margins reflexed, doubly serrate above base. Costa percurrent to short-excurrent, superficial cells rectangular, smooth to prorate ventrally, dentate above dorsally; in section subround to triangular, bulging dorsally, guide cells 4, larger than other cells, in- crassate, ventral cells in 1-3 rows, smaller than guide cells, incrassate, dorsal stereid band 3-5 rows thick, dorsal surface cells not differentiated or substereids. Upper laminal cells rectangular, mostly 4-6(-8):1, weakly thickened, weakly prorate; basal cells rectangular, 10:1, thin-walled; alar cells quadrate, not forming distinct group. Synoicous. Perichaetia lateral through innovation, leaves not differentiated. Seta to 2 mm long, reddish yellow; capsule ± erect, just emergent, urn globose and smooth wet, broadly short-cylindrical and sulcate dry, 1.0-1.2 mm long, yellowish with dark red mouth; exothecial cells subhexagonal, weakly thickened or thin-walled with slightly thickened comers, 2-4 rows of cells at mouth smaller, quadrate to transversely rectangular; stomata present at base of urn, phaneropore; peristome absent, occasionally with fragile, hyaline fringe at mouth; operculum convex-apiculate, more strongly apiculate dry; calyptra not seen; spores subround, 25-32 µm, warty, yellowish brown.

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

    Habitat

    The species is collected on soil in mountains.

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

    Distribution

    Known only from the type locality in the southeastern corner of the central Cape Province.

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

      Bibliography

    • 1 Fl. S. Africa, Bryophyta
    • 2 Magill, RE. 1987. Mniaceae to Bartramiaceae. Fl. S. Africa (1,2): 395 - 438.

     Information From

    Bartramiaceae
    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).