Ophioglossum costatum R.Br.

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Ophioglossum costatum

Picture: Petra Ballings
Hippo Pools, Umfurudzi Safari area

Ophioglossum costatum

Picture: Petra Ballings
Hippo Pools, Umfurudzi Safari area

Ophioglossum costatum

Picture: Petra Ballings
Hippo Pools, Umfurudzi Safari area

Ophioglossum costatum

Picture: Petra Ballings
Hippo Pools, Umfurudzi Safari area

Ophioglossum costatum

Picture: Petra Ballings
Hippo Pools, Umfurudzi Safari area

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

Synonyms: Ophioglossum aphrodisiacum Welw. ex Hook. & Baker
Ophioglossum felixii Tardieu
Ophioglossum fibrosum Schumach.
Common names:
Status: Native
Rhizome globose, up to 15 mm in diameter; roots dens, radiating, wiry. Leaves up to 4 but mostly 2, held at 60-80° from the horizontal, dull green. Petiole up to 5.5 cm long, subterranean for most of its length (70-90%). Sterile lamina up to 75 × 30 mm, lanceolate to narrowly ovate in outline, apex pointed to rounded, base rounded to narrowly wedge-shaped, with an apparent pseudo-midrib formed by elongated meshes of the venation; fertile segment up to 25 cm long, inserted at or just above the base of the lamina. Sporangia up to 50 pairs.
Type location:
Notes: Could be confused with O. gomezianum which has bright to yellowish green leaves with no prominent pseudo-midrib on the under surface of the lamina. O. rubellum has dark green leaves that are held at up to 20° from the horizontal or appressed to the ground.
Derivation of specific name: costatum: ribbed, referring to the apparent pseudo-midrib on the sterile lamina.
Habitat: On seasonally moist, shallow soils, on sand overlying rocks, at the edge of pans in open to slightly shaded positions.
Altitude range: 990 - 1500 m
Worldwide distribution: Widespread in southern and tropical Africa, Madagascar, India and Australia.
Zambian distribution (Flora Zambesiaca): N,W,S
Zambian distribution (Provinces): Nw,Cb,N,S
Growth form(s): 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 48. (Includes a picture).

Burrows, J.E. & Burrows, S.M. (1993). An annotated check-list of the pteridophytes of Malawi Kirkia 14(1) Page 82.

Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011). Ferns of Southern Africa, A comprehensive guide Struik Nature Pages 128 - 129. (Includes a picture).

Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 12.

Germishuizen, G. & Meyer, N.L. (eds) (2003). Plants of southern Africa: an annotated checklist. Strelitzia 14 Page 77.

Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 166 - 167. (Includes a picture).

Kornas, J. (1979). Distribution and ecology of the Pteridophytes in Zambia Polska Akademia Nauk Wydzial II Nauk Biologicznych Pages 36 - 37.

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 Page 32.

Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 33.

Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Page 38. (Includes a picture).

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 Ophioglossum costatum:

Our websites:

Flora of Botswana: Ophioglossum costatum
Flora of Caprivi: cultivated Ophioglossum costatum
Flora of Malawi: Ophioglossum costatum
Flora of Mozambique: Ophioglossum costatum
Flora of Zimbabwe: Ophioglossum costatum

External websites:

African Plants: A Photo Guide (Senckenberg): Ophioglossum costatum
BHL (Biodiversity Heritage Library): Ophioglossum costatum
EOL (Encyclopedia of Life): Ophioglossum costatum
GBIF (Global Biodiversity Information Facility): Ophioglossum costatum
Google: Web - Images - Scholar
iNaturalist: Ophioglossum costatum
IPNI (International Plant Names Index): Ophioglossum costatum
JSTOR Plant Science: Ophioglossum costatum
Mansfeld World Database of Agricultural and Horticultural Crops: Ophioglossum costatum
Plants of the World Online: Ophioglossum costatum
Tropicos: Ophioglossum costatum
Wikipedia: Ophioglossum costatum

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-24

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2024). Flora of Zambia: Species information: Ophioglossum costatum.
https://www.zambiaflora.com/speciesdata/species.php?species_id=100240, retrieved 24 July 2024

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