Adiantum patens Willd.
subsp. oatesii (Baker) schelpe

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Adiantum patens subsp. oatesii

Picture: John Burrows
Mwinilunga District

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Synonyms: Adiantum oatesii Baker
Adiantum patens Willd. var. oatesii (Baker) F.Ballard
Adiantum pedatum Peter
Common names:
Frequency: Rare
Status: Native
Rhizome creeping; rhizome scales short, brown, slightly ciliate. Fronds tufted, herbaceous, arching. Stipe up to 38 cm long, thin, brown, glabrous. Lamina triangular in outline, 25 × 30 cm, pedately divided into up to 11 linear, pinnate pinnae, each terminating in a single apical pinnule. Rhachis glabrous. Pinnules numerous, glabrous, 20 × 9 mm, rhombic in shape. Pinnules with short wiry brown petiole, upper and outer margins irregularly lobed, midrib forms the lower margin. Sori on pinnule lobes on the upper and outer margin of the undersurface, indusial flap circular to kidney-shaped, glabrous, up to 1.5 mm in diameter.
Type location:
Derivation of specific name: patens: spreading, diverging from the axis at almost 90 degrees; referring to the fronds
Habitat: Thick deciduous woodland on termite mounds, deep shade of evergreen riverside forest and dry evergreen forest.
Altitude range: 880 - 1400 m
Worldwide distribution: Burundi, Cameroon, DRC, Ghana, Nigeria, Sudan, Tanzania, Uganda, Zambia, Zimbabwe
Zambian distribution (Flora Zambesiaca): N,W,C,S
Zambian distribution (Provinces): Nw,Cb,N,S
Growth form(s): Terrestrial.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Burrows, J.E. (1990). Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 122 - 123. As A. oatesii (Includes a picture).

Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 227 - 228. As A. patens subsp. oatesii (Includes a picture).

Kornas, J. (1979). Distribution and ecology of the Pteridophytes in Zambia Polska Akademia Nauk Wydzial II Nauk Biologicznych Page 64. As A. patens subsp.oatesii

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 9.

Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Page 75.

Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Page 70.

Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Page 111. As A. patens subsp. oatesii

Other sources of information about Adiantum patens subsp. oatesii:

Our websites:

Flora of Caprivi: Adiantum patens subsp. oatesii
Flora of Zimbabwe: Adiantum patens subsp. oatesii

External websites:

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

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-23

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2023). Flora of Zambia: Species information: Adiantum patens subsp. oatesii., retrieved 4 October 2023

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