Didymoglossum erosum (Willd.) J.P. Roux

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Synonyms:	Trichomanes erosum Willd. Trichomanes erosum Willd. var. aerugineum (Bosch) C.Chr. ex Bonap.
Common names:
Frequency:
Status:	Native
Description:	Rhizome fine, wiry, covered with very small dark brown hairs. Fronds spaced apart. Stipe short, dark brown, bearing small dark brown scales when young. Lamina variable in outline, up to 5 × 1.5 mm, simple to pinnatifid, thinly membranous in texture, false marginal vein present, glabrous, margins variable. Sori borne in the upper half of the frond, tubular, narrowly bell-shaped, up to 2.5 mm long, with rounded entire valves and winged by the lamina throughout its length.
Notes:	Probably often overlooked or confused with a liverwort. However easy to recognize by its very small, simple and membranous leaves.
Derivation of specific name:	erosum: with an irregurly toothed, lobed margin.
Habitat:	Epiphytic or lithophytic in deeply shaded moist evergreen forest.
Altitude range: (metres)	920 - 1830 m
Worldwide distribution:	Tropical and southern subtropical Africa
Zimbabwe distribution:	E
Growth form(s):	Epiphyte, lithophyte.
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 89 - 90. (Includes a picture). Burrows, J.E. & Burrows, S.M. (1993). An annotated check-list of the pteridophytes of Malawi Kirkia 14(1) Page 84. Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 56. As Trichomanes erosum aerugineum Crouch, N.R., Klopper, R.R., Burrows, J.E. & Burrows, S.M. (2011). Ferns of Southern Africa, A comprehensive guide Struik Nature Pages 154 - 155. (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 11. As Trichomanes erosum var. aerugineum Jacobsen, W.B.G. (1983). The Ferns and Fern Allies of Southern Africa. Butterworths, Durban and Pretoria. Pages 187 - 188. (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 7. Roux, J.P. (2001). Conspectus of Southern African Pteridophyta. Southern African Botanical Diversity Network Report 13 Pages 48 - 49. (Includes a picture). Roux, J.P. (2009). Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands Pages 41 - 42. Schelpe, E.A.C.L.E. (1970). Pteridophyta Flora Zambesiaca Page 76. (Includes a picture). Wursten, B., Timberlake, J. & Darbyshire, I. (2017). The Chimanimani Mountains: an updated checklist. Kirkia 19(1) Page 78.

Other sources of information about Didymoglossum erosum:

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Flora of Burundi: Didymoglossum erosum
Flora of Malawi: Didymoglossum erosum
Flora of Mozambique: Didymoglossum erosum
Flora of Rwanda: Didymoglossum erosum

External websites:

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