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  1. Published

    Fugleklo-Bukkehorn i Danmark

    Friis, Ib, Adsersen, Henning Emil, Rabøl, J. & Lyshede, O. B., 2007, In: URT. 31/3, p. 110-113.

    Research output: Contribution to journal › Journal article › Communication

  2. Published

    104. Moraceae

    Friis, Ib, 1989, Flora of Ethiopia:  Pittosporaceae to Araliaceae. Hedberg, I. & Edwards, S. (eds.). Addis Ababa & Uppsala: National Herbarium, Vol. 3. p. 271-301.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  3. Published

    Den biologiske faggruppe [i Det Kongelige Danske Videnskabernes Selskab]

    Friis, Ib & Wang, T., 13 Nov 2017, Det Kongelige Danske Videnskabernes Selskab 1742-2017: et Jubilæumsskrift. Nielsen, M. A. (ed.). København: Det Kongelige Danske Videnskabernes Selskab, p. 153-179 27 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  4. Published

    The Gerire Hills, a SE Ethiopian outpost of the transitional semi-evergreen bushland: vegetation, endemism and three new species, Croton elkerensis (Euphorbiaceae), Gnidia elkerensis (Thymelaeaceae), and Plectranthus spananthus (Lamiaceae)

    Friis, Ib, Gilbert, M. G., Paton, A. J., Weber, O., van Breugel, P. & Demissew, S., 3 Jul 2018, In: Webbia. 72, 2, p. 203-223

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    The East African Flora, and those who study it, have lost a great friend, Kew botanist Sally Bidgood: 13 April 1948–18 March 2018

    Friis, Ib, 2018, In: Journal of East Africa Natural History. 107, 1, p. 31-36 6 p.

    Research output: Contribution to journal › Journal article › Communication

  6. Published

    Old tropical botanical collections: how to improve their availability, comprehensibility and use in modern taxonomy?

    Friis, Ib, 2017, In: Webbia. 72, 1, p. 5-16 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Gensyn med Ginir - etiopisk feltarbejde efter 30 års venten.

    Friis, Ib & Weber, O., 1 Aug 2014, In: Naturhistorier. 2014, 1, p. 13-17

    Research output: Contribution to journal › Journal article › Communication

  8. Published

    Diagnose eller typeeksemplar? - Botaniske artsnavne mellem essentialisme og empiri

    Friis, Ib, 2008, In: Filosofiske Studier. 24, p. 88-102

    Research output: Contribution to journal › Journal article › Research

  9. Published

    The Tropical East African Urticaceae as a sample plant biodiversity study: What does it show about taxa, habitats, existing scientific collections and protected areas?

    Friis, Ib, 2008, In: African Journal of Ecology. 46, Suppl. 1, p. 122-124

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    Proposal to amend the International Code of Botanical Nomenclature: (93) The problem of non-binary species-names in works published after 1 May 1753, with a proposal to amend ICBN

    Friis, Ib & Jeffrey, C., 1986, In: Taxon. 3, p. 397-400

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    Two new taxa and a new combination in Urticaceae for the Flora Zambesiaca

    Friis, Ib, 1986, In: Boletim da Sociedade Broteriana, Sér. 2,. 58, p. 201-214

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    A new arborescent species of Croton (Euphorbiaceae) from the semi evergreen forests of S Somalia and E Kenya

    Friis, Ib & Gilbert, M. G., 1984, In: Nordic Journal of Botany. 4, p. 327-331.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    An analysis of the protologues of new genera with new species in Forsskål's Flora Aegyptiaco-Arabica

    Friis, Ib, 1984, In: Taxon. 33, p. 655-667

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    A synopsis of the genus Obetia (Urticaceae)

    Friis, Ib, 1983, In: Kew Bulletin. 38, p. 221-228

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Studies in the flora and vegetation of SW Ethiopia

    Friis, Ib, Rasmussen, Finn N. & Vollesen, K., 1982, In: Opera Botanica. 63, p. 1-70

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    A note on effective publication

    Friis, Ib & Dahlgren, R., 1981, In: Taxon. 30, p. 499-501

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    The taxonomy and distribution of Mimusops laurifolia (Sapotaceae)

    Friis, Ib, 1981, In: Kew Bulletin. 35, p. 785-792

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Nordiske Botanikere og deres orkideer: Natanael Wallich, 2.del

    Friis, Ib, 1991, In: Orchideer. 12, 9, p. 204-207

    Research output: Contribution to journal › Journal article › Communication

  19. Published

    Warmings "Frøplanterne" - en forrygende succes

    Friis, Ib, 1992, In: URT (Særnummer "Eug. Warming og botanikken). 1991: 5, p. 11-23

    Research output: Contribution to journal › Journal article › Communication

  20. Published

    Additional observations on forests and forest trees of northeast tropical Africa (Ethiopia, Djibouti and Somalia)

    Friis, Ib, 1993, In: Opera Botanica. 121, p. 119-124

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    3. Lauraceae

    Friis, Ib, 2000, Flora of Ethiopia and Eritrea: Magnoliaceae-Flacourtiaceae. Edwards, S., Tadesse, M., Demissew, S. & Hedberg, I. (eds.). Uppsala, Sweden & Addis Ababa, Ethiopia: University of Uppsala, Vol. 2, 1. p. 14-17

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  22. Published

    77. Buxaceae

    Friis, Ib, 1999, Flora of Somalia: Angiospermae (Tiliaceae-Apiaceae). Thulin, M. (ed.). England: Royal Botanic Gardens, Vol. 2. p. 83-85

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  23. Published

    Mapping the African flora - trends in the development of methods and applications

    Friis, Ib, 1999, African Plants - Biodiversity, taxonomy and uses  - Proceedings of the 1997 AETFAT Congress, Harare, Zimbabwe. Timberlake, J. & Kativu, S. (eds.). Kew, England: Royal Botanic Gardens, p. 131-151

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  24. Published

    60. Canellaceae

    Friis, Ib, 1995, Flora of Ethiopia and Eritrea: Canellaceae to Euphorbiaceae. Edwards, S., Tadesse, M. & Hedberg, I. (eds.). Addis Ababa and Uppsala: National Herbarium, Addis Ababa University, Vol. 2, 2. p. 1

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  25. Published

    Altitudinal zonation in the forest tree flora of north east tropical Africa

    Friis, Ib & Lawesson, J., 1993, In: Opera Botanica. 121, p. 125-128

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Fam. 152. Buxaceae

    Friis, Ib, 2007, Flora Zambesiaca. Pope, G. V., Polhill, R. M. & Martins, E. S. (eds.). Kew.: Royal Botanic Gardens, Vol. 9, 3.. p. 251-254.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  27. Published

    Cenni monografici sul paese dei Gherire (Mogadiscio, 1938) – a pioneer work on the Gerire Hills in western Ogaden, south-eastern Ethiopia : – introduced, translated and provided with annotations and a revision of the botanical collections

    Friis, Ib, 30 Apr 2019, In: Webbia. 74 (supplement), p. 1-108

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    G.C. Oeder's conflict with Linnaeus and the implementation of taxonomic and nomenclatural ideas in the monumantal Flora Danica project

    Friis, Ib, 27 Sep 2019, In: Gardens' Bulletin, Singapore. 71, (Supplement 2, p. 53-85

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Temperate and Tropical Plant Collections: The changing species concept and other ideas behind their development

    Friis, Ib, 2017, Tropical Plant Collections: Legacies from the Past? Essential Tools for the Future?: Proceedings of an international symposium held by The Royal Danish Academy of Sciences and Letters in Copenhagen, 19th–21st of May, 2015. Friis, I. & Balslev, H. (eds.). København: Det Kongelige Danske Videnskabernes Selskab, Vol. Scientia Danica B, vol. 6. p. 15-38 24 p. (Scientia Danica. Series B, Biologica, Vol. 6).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  30. Published

    Svend Thorkild Andersen. 12. september 1926 - 8. februar 2009

    Friis, Ib, 2011, Oversigt over Selskabets Virksomhed 2009-2010. Det Kongelige Danske Videnskabernes Selskab, Vol. 2009-2010. p. 174-186 13 p. (Kongelige Danske Videnskabernes Selskab. Oversigt over Selskabets Virksomhed, Vol. 2009/2010).

    Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Communication

  31. Published

    Ethiopian Biomes

    Friis, Ib, 2017, Ethiopia: History, Culture and Challenges. Uhlig, S., Appleyard, D., Bausi, A., Hahn, W. & Kaplan, S. (eds.). Berlin: LIT Verlag, p. 25 1 p. (Afrikanische Studien/African Studies, Vol. 58).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  32. Published

    (3001) Proposal to conserve the name Jatropha pelargoniifolia against Adenoropium forskaolii (Euphorbiaceae)

    Friis, Ib & Thulin, M., 2023, In: Taxon. 72, 6, p. 1373-1374

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    The flora of woody plants and vegetation on the Horn of Africa

    Friis, Ib, 3 Jan 2017

    Research output: Other contribution › Net publication - Internet publication › Communication

  34. Published

    Flora - fra blomstergudinde i det antikke Rom over Danmark til hele verdens betegnelse for en håndbog om planter

    Friis, Ib, 2010, In: URT. 34, 4, p. 121-129 9 p.

    Research output: Contribution to journal › Journal article › Communication

  35. Published

    Botaniske Haver - til nytte og glæde

    Friis, Ib, 2012, Haver & kultur: havekunst og kultur ved Middelhavet. Mejer, L. & Carstens, A. M. (eds.). Aarhus: Tidsskriftet Sfinx, p. 66-71 6 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  36. Published

    Botanik

    Friis, Ib, 2006, Dansk Naturvidenskabs Historie. Nielsen, H. & Nielsen, K. H. (eds.). Aarhus: Aarhus Universitetsforlag, Vol. 4. p. 125-137

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  37. Published

    Proposal to conserve 1648 Graphorkis Du Petit-Thouars (1804 - Orchidaceae) with a conserved type

    Friis, Ib & Rasmussen, Finn N., 1984, In: Taxon. 33, p. 114-116

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    A synopsis of the genus Pouzolzia Gaud. (Urticaceae) in tropical Africa

    Friis, Ib & Jellis, S., 1984, In: Kew Bulletin. 39, p. 587-601

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Validation of names of new species by reference to previously published descriptions of new genera without valid species names

    Friis, Ib, 1984, In: Taxon. 33, p. 301-308

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Dombeya torrida, the correct name for James Bruce's "Walkuffa"

    Friis, Ib & Hepper, F. N., 1979, In: Botaniska Notiser. 132, p. 397-398

    Research output: Contribution to journal › Journal article › Research

  41. Published

    Studies in the genus Haemanthus (Amaryllidaceae) IV. Division of the genus into Haemanthus s. str. and Scadoxus, with notes on Haemanthus s. str

    Friis, Ib & Nordal, I., 1976, In: Norwegian Journal of Botany. 23, p. 63-77

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Skovene på Afrikas Horn

    Friis, Ib, 1993, Carlsbergfondet - Frederiksborgmuseet - Ny Carlsbergfondet. Årskrift 1993. København: Projekt EDB I Undervisningen, p. 9-21

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  43. Published

    Addenda to Vol. 3: 105. Urticaceae

    Friis, Ib, 2000, Flora of Ethiopia and Eritrea: Magnoliaceae-Flacourtiaceae. Edwards, S., Tadesse, M., Demissew, S. & Hedberg, I. (eds.). Uppsala, Sweden & Addis Ababa, Ethiopia: University of Uppsala, Vol. 2, 1. p. 459-460

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  44. Published

    10. Berberidaceae

    Friis, Ib, 2000, Flora of Ethiopia and Eritrea: Magnoliaceae-Flacourtiaceae. Edwards, S., Tadesse, M., Demissew, S. & Hedberg, I. (eds.). Uppsala, Sweden & Addis Ababa, Ethiopia: University of Uppsala, Vol. 2, 1. p. 41

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  45. Published

    Urticaceae

    Friis, Ib & Jørgensen, P. M., 1999, Catalogue of the Vascular Plants of Ecuador. Jørgensen, P. M. & León-Yánez, S. (eds.). St. Louis, Missouri, USA: Missouri Botanical Garden, p. 930-934, 956

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  46. Published

    An additional note on the genus Droguetia (Urticaceae)

    Friis, Ib, 1990, In: Nordic Journal of Botany. 10, p. 431 - 432

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    Urticaceae

    Friis, Ib, 1989, Flora of Tropical East Africa: Urticaceae. Polhill, R. M. & Polhill, D. (eds.). Rotterdam: A.A. Balkema, 65 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  48. Published

    Notes on the vegetation of the southernmost Somalia, with some additions to the flora

    Friis, Ib & Vollesen, K., 1989, In: Willdenowia. 18, p. 455-477

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    New taxa and combinations in tropical African Pilea (Urticaceae)

    Friis, Ib, 1988, In: Kew Bulletin. 44, p. 648-648

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    New combinations in old world Urticaceae

    Friis, Ib, Immelman, K. & Wilmot-Dear, C. M., 1987, In: Nordic Journal of Botany. 7, p. 125-126

    Research output: Contribution to journal › Journal article › Research › peer-review

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