Marsilea apposita Launert

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Marsilea apposita

Photo: Petra Ballings

Marsilea apposita

Photo: Petra Ballings

Marsilea apposita

Photo: Petra Ballings

Marsilea apposita

Photo: Petra Ballings

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Species details: Click on each item to see an explanation of that item (Note: opens a new window)

Common names:
Floating form: stipe up to 30 cm long, usually hairless. Leaflets up to 26 × 25 mm, broadly obdeltate, outer margin rounded, entire, hairless. Dry land form: stipe up to 8 cm long. Leaflets ± 7 × 5 mm, narrowly obdeltate, outer margins deeply crenate, slightly hairy at beginning. Sporocarps: 3-4 mm long, 2-3.25 mm high, 1.5-2 mm thick, brown, almost rectangular in lateral view, upper side shallowly concave, under side convex, outer side rounded, vertical cross-section narrowly rectangular, continuous shallow groove from upper over outer and along lower side; densely hairy when young becoming hairless with age; inferior tooth a shallow hump or absent, superior tooth rather short, subacute; lateral ribs hardly visible in mature specimens; pedicels up to 8 mm long, cylindrical, wiry, erect or arching, 2 or 3 uniting at the base, sometimes solitary, arising from the axil of the stipe.
Derivation of specific name: apposita: side by side, the pedicels are united in twos or threes at the base giving the sporocarps a closely packed appearance.
Worldwide distribution: Botswana, South Africa, Zimbabwe
Botswana distribution:
Growth form(s): Aquatic, terrestrial.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Burrows, J.E. (1990). Southern African Ferns and Fern Allies. Frandsen, Sandton. Page 76. (Includes a picture).

Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011). Ferns of Southern Africa, A comprehensive guide Struik Nature Pages 254 - 255. (Includes a picture).

Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Page 485. (Includes a picture).

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 8.

Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Pages 174 - 175.

Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 55.

Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Pages 65 - 66.

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 15.

Other sources of information about Marsilea apposita:

Our websites:

Flora of Zimbabwe: Marsilea apposita

External websites:

African Plants: A Photo Guide (Senckenberg): Marsilea apposita
BHL (Biodiversity Heritage Library): Marsilea apposita
EOL (Encyclopedia of Life): Marsilea apposita
ePIC (electronic Plant Information Center): Marsilea apposita
Flora Zambesiaca web site: Marsilea apposita
GBIF (Global Biodiversity Information Facility): Marsilea apposita
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Marsilea apposita
iNaturalist: Marsilea apposita
IPNI (International Plant Names Index): Marsilea apposita
JSTOR Plant Science: Marsilea apposita
Kew Herbarium catalogue: Marsilea apposita
Mansfeld World Database of Agricultural and Horticultural Crops: Marsilea apposita
Plants of the World Online: Marsilea apposita
Tropicos: Marsilea apposita
Wikipedia: Marsilea apposita

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-22

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2022). Flora of Botswana: Species information: Marsilea apposita., retrieved 7 July 2022

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