Classification of Lycophytes and Ferns of Ethiopia and Eritrea, According to the Pteridophyte Phylogeny Group (PPG) – I

Makeu Tangoufo Larissa *

Department of Plant Science, University of Buea, Buea, Cameroon.

Ndam M. Lawrence

Department of Agronomy and Applied Molecular Sciences, University of Buea, Buea, Cameroon.

Pascal Tabi Tabot

Department of Plant Science, University of Buea, Buea, Cameroon and Department of Agriculture, Higher Technical Teachers’ Training College Kumba, Buea, Cameroon.

Fonge Beatrice Ambo

Department of Plant Science, University of Buea, Buea, Cameroon.

*Author to whom correspondence should be addressed.


Aims: To conduct an in-depth inventory of the pteridophytes of Ethiopia and Eritrea, classifying them based on the Pteridophyte Phylogeny Group I (PPG I), in order to conform to the new trends in pteridophyte classification.

Study Design: The desktop research approach.

Place and Duration of Study: Data for this study was collected from the National Herbarium of Ethiopia in Addis Abeba (ETH) and other literature [1]. The study was carried out from February 2023 to June 2024.

Methodology: The desktop research approach was applied in this study. Secondary data on species of pteridophytes of Ethiopia and Eritrea was obtained through a compilation published in 2009 by groups of researchers from the National Herbarium (ETH) of the University of Addis Ababa and Uppsala University of Sweden through the Department of Systematic Biology. It was published in Volume I of the ‘Flora of Ethiopia and Eritrea’ (based solely on morphological characterization). Other literature were consulted for new species [2,1]. Classification of species were adjusted to conform to PPG-I classification system (a modern, comprehensive classification, community-based approach which uses monophyly as the primary criterion for the recognition of taxa.

Results: This study has produced a comprehensive checklist of documented species of pteridophytes in Ethiopia and Eritrea according to PPG-I. It is comprised of 2 classes, 14 orders, 27 families, 76 genera and 193 species.

Conclusion: This study has revised the classification of pteridophytes of Ethiopia and Eritrea to conform to the PPG I classification approach. This resulted in 27 families, 76 genera and 192 species, with changes recorded at all levels of classification except the number of species. This outcome is therefore suggested to be applied in the herbaria and adopted by researchers of pteridophytes in Ethiopia and Eritrea, for ease of communication internationally.

Keywords: Pteridophytes, fern, lycophytes, PPG, Ethiopia, Eritrea

How to Cite

Larissa, Makeu Tangoufo, Ndam M. Lawrence, Pascal Tabi Tabot, and Fonge Beatrice Ambo. 2024. “Classification of Lycophytes and Ferns of Ethiopia and Eritrea, According to the Pteridophyte Phylogeny Group (PPG) – I”. Asian Journal of Research in Botany 7 (2):127-50.


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Fischer E, Killmann D, Ackermann M, Yeshitela K. Pilularia ethiopica (Pteridophyta, Marsileaceae), a new species of pillwort from the tropical African mountains of Ethiopia. Phytotaxa. 2023:77-86. DOI: 10.11646/PHYTOTAXA.612.1.6

Friis I, Phillips SM, Gilbert MG, Challen G, Schrire B, Demissew S, Bidgood S. New additions to the Flora of Ethiopia and Eritrea in the families Euphorbiaceae, Fabaceae (Leguminosae), Lamiaceae, Campanulaceae, Eriocaulaceae and Poaceae. Symb Bot Ups. 2011:35(2):107–128.

Vidyashree, Chandrashekar SY, Hemla Naik B, Jadeyegowda M, Revannavar R, Diversity of Fern Flora for Ecological Perspective – A Review, Int. J. Pure App. Biosci. 2018;6(5): 339-345 DOI: 6750

Arini DID, Kinho J. The Pteridhopyta Diversity in Gunung Ambang Nature Reserve North Sulawesi. Info BPK Manado. 2012;2(1):18-40.

Madeja J, Harmata K, Kolaczek P, Karpinska-Kolaczek M, Platek K, Naks P. Bracken fern (Pteridium aquilinum L. Kuhn), Mistletoe (Viscum album L.), and bladdernut (Staphylea pinnata L.): Mysterious plants with unusual applications. Plants and culture: Seeds of the cultural, heritage of Europe. Edited by: Morel J-P, Mercuri AM., Edipuglia: Centro Universitario Europeo 2009;207-215.

Oloyede FA, Alafe BO, Oloyede FM: Nutrient evaluation of Nephrolepis biserrata (Nephrolepidaceae, Pteridophyta). Bot Lith. 2008;14:207–210.

Essuman EK: Protein extraction from fern and its physicochemical properties. MSc Thesis. Kumasi: Kwame Nkrumah University of Science and Technology; 2013.

Lognay G, Haubruge E, Wathelet B, Mathieu F, Marlier M, Malaisse F. Ophioglossum polyphyllum A. Braun in Seub. (Ophioglossaceae, Pteridophyta), a rare potherb in south central Tibet (TAR, PR China). Geo-Eco-Trop, 2008;32.

38 Rai, Preshina, and Saurav Moktan. Diversity and Distribution of Vascular Epiphytic Flora in Sub-Temperate Forests of Darjeeling Himalaya, India”. Annual Research & Review in Biology. 2020; 35(5):63-81. Avaialble:

39 Sessa EB. Evolution and classification of ferns and Lycophytes. Current advances in fern research. 2018:179-200.

Smith AR, Pryer KM, Schuettpelz E, Korall P, Schneider H, Wolf PG. Fern classification. In: Ranker TA, Haufler CH, eds. Biology and Evolution of Ferns and Lycophytes. Cambridge University Press. 2008:417-467.

Copeland EB. Generafilicum, the genera of ferns. Annales. Cryptogamici et Phytopathologici. 1947;5:1–247

Holttum RE. A revised classification of leptosporangiate ferns. Journal of the Linnean Society, Botany. 1947;53:123–158.

Holttum RE. The classification of ferns. Biological Review. 1949;24:267–296.

Nayar BK. A phylogenetic classification of the homosporous ferns. Taxon. 1970; 19:229–236.

Bierhorst DW. Morphology of Vascular Plants. New York; 1971.

PPG I (Pteridophyte Phylogeny Group). A community-derived classification for extant lycophytes and ferns. Journal of Systematics and Evolution. 2016;54(6): 563–603. Avaialble:

Kamau P. Systematic revision of Pteris l. In tropical Africa and ecology of ferns and lycophytes in Lowland Tropical Rainforests; 2012.

Hedberg I, Friis I, Persson E. (eds.). Flora of Ethiopia and Eritrea. Lycopodiaceae to Pinaceae. Appendix. Addis Ababa and Uppsala. 2009a; 1.

Pichi Sermolli REG. Tentamen pteridophytorum genera in taxonomicum ordinern redigendi. Webbia. 1977;31:313-512.

Dessalegn F. Diversity and distribution of pteridophytes in the flora of Ethiopia and Eretria. Research Journal of Pharmaceutical, Biological and Chemical Sciences. 2013;4:787-799.

Demissew S, Friis Ib, Weber O. Diversity and endemism of the fora of Ethiopia and Eritrea: state of knowledge and future perspectives. Rendiconti Lincei. Scienze Fisiche e Naturali. 2021;32:675–697 Avaialble:

Aldasoro JJ, Cabezas F, Aedo C. Diversity and distribution of ferns in sub-Saharan Africa, Madagascar and some islands of the South Atlantic. 2004;31:1579-1604.

Lehnert M. Grammitid ferns (Polypodiaceae): Melpomene, Flora Neotropica Monograph, New York: The New York Botanical Garden. 2013;112.

Sundue MA, Parris BS, Ranker TA, Smith AR, Fujimoto EL, ZamoraCrosby D, et al. Global phylogeny and biogeography of grammitid ferns (Polypodiaceae). Molecular Phylogenetics and Evolution. 2014;81:195–206.

Kreier HP, Zhang XC, Muth H, Schneider H. The microsoroid ferns: Inferring the relationships of a highly diverse lineage of Paleotropical epiphytic ferns (Polypodiaceae, Polypodiopsida). Molecular Phylogenetics and Evolution. 2008b;48:1155–1167.

Zhang G, Yatskievych G, Cheilanthes. In: Wu Z, Raven PH, Hong D eds. Flora of China. Beijing: Science Press; St. Louis: Missouri Botanical Garden Press. 2–3 (Lycopodiaceae through Polypodiaceae): 2013;218–224.

Smith AR, Pryer KM, Schuettpelz E, Korall P, Schneider H, Wolf PG. A classification for extant ferns. Taxon. 2006b;55:705–731.

Zhang LB, Zhang L. Didymochlaenaceae: A new fern family of eupolypods I (Polypodiales). Taxon. 2015;64:27– 38.

Rothfels CJ, Sundue MA, Kuo LY, Larsson A, Kato M, Schuettpelz E, Pryer KM. A revised family-level classification for eupolypod II ferns (Polypodiidae: Polypodiales). Taxo. 2012b;61:515– 533.

Kuo LY, Ebihara A, Shinohara W, Rouhan G, Wood KR, Wang CN. et al. Historical biogeography of the fern genus Deparia (Athyriaceae) and its relation with polyploidy. Molecular Phylogenetics and Evolution. 2016b;104:123–134.

Zhang LB, Zhang L. The inclusion of Acrophorus, Diacalpe, Nothoperanema, and Peranema in Dryopteris: The molecular phylogeny, systematics, and nomenclature of Dryopteris subg. Nothoperanema (Dryopteridaceae). Taxon. 2012;61:1199–1216.

Zhang LB, Zhang L, Dong S-Y, Sessa EB, Gao XF, Ebihara A.. Molecular circumscription and major evolutionary lineages of the fern genus Dryopteris (Dryopteridaceae). BMC Evolutionary Biology. 2012;12: 180.

Zhang LB, Wu S, Xiang J, Xing F, He H, Wang F, Lu S, Dong S, Barrington DS, Iwatsuki K, Christenhusz MJM, Mickel JT, Kato M, Gilbert MG. 2013b. Dryopteridaceae. In: Wu Z, Raven PH, Hong D eds. Flora of China. Beijing: Science Press; St. Louis: Missouri Botanical Garden Press. (Lycopodiaceae through Polypodiaceae): 2013b;2–3;541–724.

Liu HM, Zhang XC, Wang M-P, Shang H, Zhou SL, Yan YH, Wei XP, Xu WB, Schneider H. Phylogenetic placement of the enigmatic fern genus Trichoneuron informs on the infra-familial relationship of Dryopteridaceae. Plant Systematics and Evolution. 2016;302:319–332.

Zhang L, Schuettpelz E, Rothfels CJ, Zhou XM, Gao XF, Zhang LB. Circumscription and phylogeny of the fern family Tectariaceae based on plastid and nuclear markers, with the description of two new genera: Draconopteris and Malaifilix (Tectariaceae). Taxon. 2016;65: 723–738.