Pityrogramma calomelanos (L.) Link
var. aureoflava (Hook.) Weath. ex L.H. Bailey

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Pityrogramma calomelanos var. aureoflava

Picture: Petra Ballings
Mount Buchwa, road from tunnel to lake filled open mine

Pityrogramma calomelanos var. aureoflava

Picture: Petra Ballings
Mount Buchwa, road from tunnel to lake filled open mine

Pityrogramma calomelanos var. aureoflava

Picture: Petra Ballings
Mount Buchwa, road from tunnel to lake filled open mine

Pityrogramma calomelanos var. aureoflava

Picture: Petra Ballings
Mount Buchwa, road from tunnel to lake filled open mine

Pityrogramma calomelanos var. aureoflava

Picture: Petra Ballings
Mount Buchwa, road from tunnel to lake filled open mine

Pityrogramma calomelanos var. aureoflava

Picture: Petra Ballings
Mount Buchwa, road from tunnel to lake filled open mine

Pityrogramma calomelanos var. aureoflava

Picture: Petra Ballings
Mount Buchwa, road from tunnel to lake filled open mine

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

Synonyms: Ceropteris calomelanos sensu Sim
Gymnogramma calomelanos (L.) Kaulf. var. aureoflava Hook.
Common names:
Frequency:
Status:
Description:
Rhizome erect to shortly creeping, up to 10 mm in diameter; scales light brown, linear, up to 4 mm long, margins entire. Fronds tufted, arching, firmly herbaceous. Stipe 6-36 cm long, black to chestnut brown, shiny smooth with few scales at the base. Lamina 14-37 × 7-14 cm, ovate to lanceolate in outline, 2- to 3-pinnatifid, long tapering to the apex. Pinnae oblong-lanceolate to narrowly lanceolate, pinnatifid to varying degree, apices acute, margins shallowly toothed and inrolled in dried material, dark green above and covered with a yellow powder below, glabrous on both surfaces. Rhachis black to chestnut brown, shiny, glabrous. Sori about 3 mm long, situated along the veins in the outer half of the lamina between the costule and margin, often difficult to see because of the yellow powder; exindusiate.
Type location:
Notes: Could be confused with P. argentea but the latter has more delicate and more divided (3- or 4-pinnatifid, broadly ovate to triangular fronds.
Derivation of specific name: calomelanos: beautifully black, referring to the colour of stipe and rhachis; aureoflava: golden yellow, the undersides of the lamina are covered with yellow powder.
Habitat: Disturbed sites, collected from drainage ditches and dambo edges, on moist and heavy soils, in open or half shade.
Altitude range:
Worldwide distribution: Native of South and Central America but naturalised in DRC, South Africa, Swaziland, Zambia, Comoro Islands, Mauritius, Australia. Now also found in Zimbabwe.
Zambian distribution (Flora Zambesiaca): W
Zambian distribution (Provinces): Cb
Growth form(s): Lithophyte, terrestrial.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Literature:

Burrows, J.E. (1990). Southern African Ferns and Fern Allies. Frandsen, Sandton. Pages 116 - 117. (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 314 - 315. (Includes a picture).

Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 222 - 223.

Kornas, J. (1979). Distribution and ecology of the Pteridophytes in Zambia Polska Akademia Nauk Wydzial II Nauk Biologicznych Pages 61 - 62.

Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Page 57.

Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Pages 177 - 178.

Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Pages 107 - 108.

Other sources of information about Pityrogramma calomelanos var. aureoflava:

Our websites:

Flora of Zimbabwe: Pityrogramma calomelanos var. aureoflava

External websites:

African Plants: A Photo Guide (Senckenberg): Pityrogramma calomelanos
BHL (Biodiversity Heritage Library): Pityrogramma calomelanos
EOL (Encyclopedia of Life): Pityrogramma calomelanos
ePIC (electronic Plant Information Center): Pityrogramma calomelanos
Flora Zambesiaca web site: Pityrogramma calomelanos
GBIF (Global Biodiversity Information Facility): Pityrogramma calomelanos
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Pityrogramma calomelanos
iNaturalist: Pityrogramma calomelanos
IPNI (International Plant Names Index): Pityrogramma calomelanos
JSTOR Plant Science: Pityrogramma calomelanos
Kew Herbarium catalogue: Pityrogramma calomelanos
Mansfeld World Database of Agricultural and Horticultural Crops: Pityrogramma calomelanos
Plants of the World Online: Pityrogramma calomelanos
The Plant List (version 1.1): Pityrogramma calomelanos
Tropicos: Pityrogramma calomelanos
Wikipedia: Pityrogramma calomelanos


Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-19

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2019). Flora of Zambia: Species information: Pityrogramma calomelanos var. aureoflava.
https://www.zambiaflora.com/speciesdata/species.php?species_id=213810, retrieved 26 August 2019

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