Home | > | List of families | > | Dennstaedtiaceae | > | Pteridium | > | aquilinum |
Synonyms: |
Allosorus capensis (Thunb.) Pappe & Rawson Allosorus coriifolius (Kunze) Pappe & Rawson Pteridium aquilinum (L.) Kuhn var. lanuginosum (Willd.) Kuhn Pteris capensis Thunb. Pteris coriifolia Kunze |
Common names: | Bracken (English) Rugombwe (Shona) Uhombwe (Shona) |
Frequency: | Locally abundant |
Status: | Native |
Description: |
Rhizome widely creeping, subterranean, 5-10 mm in diameter; scales brown, very fine, up to 1 mm long. Fronds widely spaced, stiff, hard, erect, pubescent fronds, 0.5-1.75 m tall, often forming large, dominant colonies in suitable habitats. Stipe up to 0.5 m long, underground portion swollen and covered with fine, brown hairs, above-ground portion pale-green, glabrous. Lamina 3-pinnatifid to 4-pinnate, triangular in outline. Pinnae standing out from the rhachis horizontally at nearly right angles; basal pinnae half as long as the frond; pinnae in the upper half 3-pinnatifid. Pinnules deeply incised, joined to the costules, with apices that are not long and narrow. Sori linear, continuous, situated just inside the inrolled margins; pseudo-indusium continuous. |
Notes: | The rhizomes of this fern are fire resistant and after periods of frost or drought, the dried, brittle fronds may persist for some time. New fronds will develop soon after the start of the rains, showing the typical "fiddleheads" of the unfolding fronds. It forms extensive colonies. |
Derivation of specific name: | aquilinum: of an eagle; either because the spreading pinnae resemble the wings of an aegle or a reference to the shape of the vascular bundle in the stipe.
capense: of the Cape |
Habitat: | In open scrub, forest edges and grassland, confined to higher rainfall areas. |
Altitude range: (metres) | Up to 2400 m |
Worldwide distribution: | This subspecies is widespread in tropical Africa & South Africa, also in Madagascar, Mauritius and RĂ©union. The species as a whole is one of the most cosmopolitan fern species. |
Zimbabwe distribution: | N,W,C,E,S |
Growth form(s): | Terrestrial. |
Endemic status: | |
Red data list status: | |
Insects associated with this species: | |
Spot characters: | Display spot characters for this species |
Images last updated: | Thursday 8 December 2011 |
Literature: |
Burrows, J.E. (1990). Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 103 - 104. under subsp. aquilinum (Includes a picture). Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 28. as Pteridium aquilinum aquilinum Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 46. As Pteridium aquilinum aquilinum Chapano, C. & Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 30. As Pteridium aquilinum aquilinum Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011). Ferns of Southern Africa, A comprehensive guide Struik Nature Pages 284 - 285. (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 10. as Pteridium aquilinum aquilinum Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 208 - 209. described under subsp. aquilinum (Includes a picture). Kornas, J. (1979). Distribution and ecology of the Pteridophytes in Zambia Polska Akademia Nauk Wydzial II Nauk Biologicznych Pages 82 - 83. Under subsp. aquilinum 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. under subsp. aquilinum Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Pages 89 - 90. under subsp. aquilinum (Includes a picture). Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 112. Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Pages 88 - 89. under subsp. aquilinum Timberlake, J.R., Bayliss, J., Dowsett-Lemaire, F., Congdon, C., Branch, B., Collins, S., Curran, M., Dowsett, R,J., Fishpool, L., Francisco, J., Harris, Kopp, M. & de Sousa, C. (2012). Mt Mabu, Mozambique: Biodiversity and Conservation Report produced under the Darwin Initiative Award 15/036. Royal Botanic Gardens, Kew, London Page 71. Wursten, B., Timberlake, J. & Darbyshire, I. (2017). The Chimanimani Mountains: an updated checklist. Kirkia 19(1) Page 78. |
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