Actiniopteris dimorpha Pic. Serm.
subsp. diversiformis Kornas

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Common names:
Status: Native
Rhizome shortly creeping, c. 5 mm in diameter; rhizome scales linear, of one type, discolorous with a central dark stripe and light brown membranous margins. Stipe 2-3 times as long as the lamina, pale brown to strawcoloured, with few scales at the base, otherwise glabrous. Fronds densely tufted, erect, distinctly dimorphic, differing both in size and stipe length as well as in shape and degree of lamina dissection. Lamina outline variable, differing from subsp. dimorpha by a narrower basal angle and a smaller number of ultimate segments; dried lamina bent over sharply at an angle of 90° or more with the stipe. Sterile frond repeatedly dichotomously divided into linear segments, segments narrower than in subsp. dimorpha, segments apices more or less acute, with few terminal teeth and some additional ones continuing downwards. Fertile frond resembling those of subsp. dimorpha. Sori in submarginal lines, partly obscured by reflexed margin; indusium continuous, membranous.
Type location:
Notes: Differs from A. dimorpha subsp. dimorpha in having only one type of discolous rhizome scales, a stipe that is 2-3 times as long as the lamina and a lamina outline that is variable.
Note: F.T.E.A., tropicos, African Plant Database do not distinguish these subspecies.
Derivation of specific name:
Habitat: Open habitats on sunny rocks and in more or less shaded places in miombo woodlands on rocky slopes.
Altitude range: 890 - 1300 m
Worldwide distribution: Zambia
Zambian distribution (Flora Zambesiaca): C
Zambian distribution (Provinces):
Growth form(s): Lithophyte, terrestrial.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Kornaś, J., Dzwonko, Z., Harmata, K. & Pacyna, A. (1982). Biometrics and numerical taxonomy of the genus Actiniopteris (Adiantaceae, Filicopsida) in Zambia Bulletin van de Nationale Plantentuin van België 52(3/4) Pages 265 - 309. (Includes a picture).

Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Pages 58 - 59.

Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 167.

Other sources of information about Actiniopteris dimorpha subsp. diversiformis:

External websites:

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

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: Actiniopteris dimorpha subsp. diversiformis., retrieved 23 May 2024

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