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Abrodictyum rigidum
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Photo: Petra Ballings
SRGH
Photo: Petra Ballings
Tessa's pool area, Haroni river, Chimanimani
Photo: Petra Ballings
Tessa's pool area, Haroni river, Chimanimani
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Species details: Click on each item to see an explanation of that item (Note: opens a new window)
| Synonyms: |
Cephalomanes rigidum (Sw.) K.Iwats. Selenodesmium rigidum (Sw.) Copel. Trichomanes rigidum Sw. |
| Common names: | |
| Frequency: | Rare |
| Status: | Native |
| Description: |
Fronds tufted, erect to pendant. Rhizome shortly creeping to suberect, c. 3 mm in diameter, covered with dark brown hairs. Stipe up to 22 cm long, with a few small scales near the base. Lamina up to 24 × 13 cm, 3-4 pinnatifid, narrowly ovate to lanceolate in outline, membranous but tough and leathery. Pinnae uniformly developed, ultimate lobes narrowly linear, attenuate, glabrous on both surfaces. Rhachis winged distally. Sori c. 1.5 × 0.7 mm, narrowly conical, borne near the costules of the pinnules on the acroscopic side, not winged; receptacles long, persistent, extruding beyond the sori valves. |
| Notes: | A. rigidum has a stiff, upright habit and finely divided fronds, this makes it easy to distinguish from other Hymenophyllaceae. |
| Derivation of specific name: | rigidum: rigid, stiff; the fronds of this species are erect and tough |
| Habitat: | Lithophytic in deeply shaded, continually moist boulders and earth-banks in evergreen forest, along streams and in the spray of or close to waterfalls and rapids. Always in very dark and continually wet areas. |
| Altitude range: (metres) | 304 - 1830 m |
| Worldwide distribution: | Tropical and Southern Africa, also known from the Indian Ocean islands, South and Central America and the West Indies. |
| Zimbabwe distribution: | E |
| Growth form(s): | Lithophyte, terrestrial. |
| Endemic status: | |
| Red data list status: | |
| Insects associated with this species: | |
| Spot characters: | Display spot characters for this species |
| Images last updated: | Saturday 10 March 2012 |
| Literature: |
Burrows, J.E. (1990). Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 90 - 92. (Includes a picture). Burrows, J.E. & Burrows, S.M. (1993). An annotated check-list of the pteridophytes of Malawi Kirkia 14(1) Page 84. Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 12. As Cephalomanes rigidum Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011). Ferns of Southern Africa, A comprehensive guide Struik Nature Pages 148 - 149. (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 11. As Cephalomanes rigidum Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 190 - 191. (Includes a picture). Kornas, J. (1979). Distribution and ecology of the Pteridophytes in Zambia Polska Akademia Nauk Wydzial II Nauk Biologicznych Pages 73 - 74. 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 6. Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Page 48. (Includes a picture). Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 38. Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Page 78. (Includes a picture). Wursten, B., Timberlake, J. & Darbyshire, I. (2017). The Chimanimani Mountains: an updated checklist. Kirkia 19(1) Page 78. |
Other sources of information about Abrodictyum rigidum:
Our websites:
Flora of Burundi: Abrodictyum rigidumFlora of Malawi: Abrodictyum rigidum
Flora of Mozambique: Abrodictyum rigidum
Flora of Rwanda: Abrodictyum rigidum
Flora of Zambia: Abrodictyum rigidum
External websites:
African Plants: A Photo Guide (Senckenberg): Abrodictyum rigidumBHL (Biodiversity Heritage Library): Abrodictyum rigidum
EOL (Encyclopedia of Life): Abrodictyum rigidum
GBIF (Global Biodiversity Information Facility): Abrodictyum rigidum
Google: Web - Images - Scholar
iNaturalist: Abrodictyum rigidum
IPNI (International Plant Names Index): Abrodictyum rigidum
JSTOR Plant Science: Abrodictyum rigidum
Mansfeld World Database of Agricultural and Horticultural Crops: Abrodictyum rigidum
Plants of the World Online: Abrodictyum rigidum
Tropicos: Abrodictyum rigidum
Wikipedia: Abrodictyum rigidum
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