Asplenium obscurum Blume

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Asplenium obscurum

Photo: Petra Ballings
SRGH

Asplenium obscurum

Photo: Petra Ballings
By the Swynnerton Memorial, Chirinda Forest

Asplenium obscurum

Photo: Petra Ballings
By the Swynnerton Memorial, Chirinda Forest

Asplenium obscurum

Photo: Petra Ballings
By the Swynnerton Memorial, Chirinda Forest

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

Synonyms: Asplenium serriforme Mett.
Hymenasplenium obscurum (Blume) Tagawa
Common names:
Frequency: Rare
Status: Native
Description:
Rhizome creeping, up to 4 mm thick; scales triangular, margin subentire, up to 2 mm long. Fronds spaced up to 4 cm apart, not proliferous. Stipe up to 35 cm, few scales at base, stipe and rhachis glabrous, matt green or brown. Lamina 35 cm × 17 cm, pinnate, narrowly triangular in outline. Pinnae hairless, curved, margin toothed, costae forming the lower margins for about 1/3 of pinnae length. Sori linear to oval, up to 6 mm long, set at 45° to the costa (both sides), indusium entire.
Notes: Confused with A. unilaterale; A. obscurum is larger, stipe matt-green not dark brown, costa forming the lower margin for a shorter distance.
Derivation of specific name: obscurum: dark, shady, indistinct; reference unclear.
Habitat: On moss covered rocks in deep shade along streams in evergreen forest. Terrestrial or lithophyte.
Altitude range: (metres) 350 - 1200 m
Worldwide distribution: Malawi, Mozambique, South Africa, Tanzania, Zimbabwe, also Madagascan region and Asia
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: Sunday 6 November 2011
Literature:

Burrows, J.E. (1990). Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 221 - 222. (Includes a picture).

Burrows, J.E. , Burrows, S.M. (1993). An annotated check-list of the pteridophytes of Malawi Kirkia 14(1) Page 92.

Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011). Ferns of Southern Africa, A comprehensive guide Struik Nature Pages 598 - 599. (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 9.

Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 339 - 340. (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 5.

Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Page 168.

Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 92.

Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Page 174. (Includes a picture).


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Other sources of information about Asplenium obscurum:

Our websites:

Flora of Malawi: Asplenium obscurum
Flora of Mozambique: Asplenium obscurum

External websites:

African Plant Database: Asplenium obscurum
Biodiversity Explorer (Biodiversity of southern Africa): Asplenium obscurum
EOL (Encyclopedia of Life): Asplenium obscurum
ePIC (electronic Plant Information Center): Asplenium obscurum
Flora Zambesiaca web site: Asplenium obscurum
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Asplenium obscurum
IPNI (International Plant Names Index): Asplenium obscurum
Ispot Southern Africa : Asplenium obscurum
JSTOR Plant Science: Asplenium obscurum
Kew Herbarium catalogue: Asplenium obscurum
Tropicos: Asplenium obscurum
West African Plants database: Asplenium obscurum


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-16

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2016). Flora of Zimbabwe: Species information: Asplenium obscurum.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=102640, retrieved 26 July 2016

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