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Asplenium erectum
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Photo: Petra Ballings
BR
Photo: Petra Ballings
Castleburn Forest, Vumba
Photo: Petra Ballings
By the Swynnerton Memorial, Chirinda Forest
Photo: Petra Ballings
By the Swynnerton Memorial, Chirinda Forest
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| Synonyms: |
Asplenium erectum Bory ex Willd. var. usambarense (Hieron.) Schelpe Asplenium lunulatum Sw. var. erectum (Bory ex Willd.) Sim Asplenium sphenolobium (Kunze) Hieron. var. usambarense Hieron. Asplenium usambarense (Hieron.) Hieron. Asplenium zeyheri Pappe & Rawson |
| Common names: | |
| Frequency: | |
| Status: | Native |
| Description: |
Rhizome erect, up to 13 mm thick; scales dark brown, entire to subentire, up to 7 mm long. Fronds not proliferous, tufted, erect to arching. Stipe subglabrous with sparse scales towards the base, up to 9 cm long, matt-grey-brown. Lamina variable, 17-40 cm × 2.5-5 cm, narrowly elliptic in outline, pinnate to 2-pinnatifid with decrescent basal pinnae. Pinnae variable, up to 3 × 1 cm, up to 30-45 pairs; margins irregularly crenate, incised less than 1/2 way to the midrib; midrib forming the lower margin of the pinnae for some distance; apex obtuse to acuminate, basal acroscopic lobe well developed and free, glabrous. Sori 6-15, linear to oval, 1-2 mm long; indusium entire. |
| Notes: | Differs from similar species by having 6-15 sori per pinna, reduced pinnae towards lamina base, not proliferous fronds.
Some autors recognize 2 varieties: var. erectum, which is restricted to South Africa, and var. usambarense occuring in Zimbabwe. |
| Derivation of specific name: | erectum: erect, upright; although the larger fronds are often arching. |
| Habitat: | In deep shade on forest floor of evergreen forest. Terrestrial or lithophytic. |
| Altitude range: (metres) | 50 - 1800 m |
| Flowering time: | |
| Worldwide distribution: | Bioko, Burundi, Cameroon, DRC, Ethiopia, Guinea, Ghana, Kenya, Malawi, Mozambique, Nigeria, Rwanda, Soa Tomé, South Africa, Sudan, Swaziland, Tanzania, Uganda, Zambia, Zimbabwe, Madagascan region |
| Zimbabwe distribution: | E,S |
| Growth form: | |
| Endemic status: | |
| Red data list status: | |
| Insects (whose larvae eat this species): | |
| Spot characters: | Display spot characters for this species |
| Content last updated: | Monday 10 October 2011 |
| Literature: |
Burrows, J.E. (1990). Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 223 - 224. (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 606 - 607. (Includes a picture). Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 345 - 347. (Includes a picture). Kornas, J. (1979). Distribution and ecology of the Pteridophytes in Zambia Polska Akademia Nauk Wydzial II Nauk Biologicznych Page 98. 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 5. Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Page 164. (Includes a picture). Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Pages 84 - 85. Schelpe, E.A.C.L.E. (1970). Pteridophyta FZ Pages 175 - 176. (Includes a picture). |
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comments powered by DisqusOther sources of information about Asplenium erectum:
Flora of Mozambique: Asplenium erectumAfrican Plant Database: Asplenium erectum
Biodiversity Explorer (Biodiversity of southern Africa): Asplenium erectum
EOL (Encyclopedia of Life): Asplenium erectum
ePIC (electronic Plant Information Center): Asplenium erectum
Flora Zambesiaca web site: Asplenium erectum
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Asplenium erectum
IPNI (International Plant Names Index): Asplenium erectum
JSTOR Plant Science: Asplenium erectum
Kew Herbarium catalogue: Asplenium erectum
Tropicos: Asplenium erectum
West African Plants database: Asplenium erectum
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