Henrik Ærenlund Pedersen Associate Professor Natural History Museum of Denmark Postal address: Sølvgade 83, opg. S, rum 01-017, Botanisk Museum 1350 København K Email: [email protected] Mobile: +45 21 15 27 64

CV University degrees M.Sc. in biology, University of Aarhus, 14.02.1992. Ph.D. in science, University of Aarhus, 08.05.1995 [thesis: 'The genus Dendrochilum (Orchidaceae). Taxonomic and anthecological studies. I-IV'].

Academic positions and affiliations Assistant professor at the Botanical Museum & Library, University of Copenhagen, 01.11.1995–31.10.1998. Associate professor at the Natural History Museum of Denmark (formerly the Botanical Museum & Library), University of Copenhagen, 01.11.1998-28.02-2017. Adjunct professor at Botany Department, Kasetsart University, Bangkok, since 08.12.2008. Owner of Select Nature, since 01.01.2017. Emeritus at the Natural History Museum of Denmark, University of Copenhagen, since 01.03.2017.

Other scientific qualifications and in-house tasks Herbarium curator (Natural History Museum of Denmark) of Danish vascular plants (1995-2016), and of Greenland vascular plants (2015-2016) and Orchidaceae worldwide (2011-2016). Passed the course 'Teaching and Learning in Higher Education' at the Faculty of Science, University of Copenhagen, 02.04.1998. Member of the Ph.D. committee for botany/biology at the Faculty of Science, University of Copenhagen, 2002–2007. Member of University of Copenhagen's supervising committee concerning the nature reserve Allindelille Fredskov, 2008–2010. Member of the teaching committee, Natural History Museum of Denmark, 2008–2009. Member of the collections committee, Natural History Museum of Denmark, 2010–2013. Member of the outreach committee, Natural History Museum of Denmark, 2013-2016. Member of the institute council, Natural History Museum of Denmark, 2013–2015. Botanical editor of the popular journal 'Naturhistorier', 2014-2015. Completed the 'Course for PhD supervisors at SCIENCE in Responsible Conduct of Research (RCR)', Faculty of Science, University of Copenhagen, 01.12.2015.

Academic prizes and honours Awarded the Ph.D. Prize of the Danish Academy of Natural Sciences, 1995. Awarded an honourary grant from Carl Rasch’s Foundation by the Danish Botanical Society, 1998.

Management experience Principal investigator of the project 'Species Diversity, Endemism, and Hybridization Elucidated by studies of Selected Plants on the Balkan Peninsula', the Danish Natural Science Research Council, 1999–2001. Three co-investigators; total amount granted: 590,000 DKK. Deputy keeper of the Botanical Museum & Library, University of Copenhagen, 2002–2004. Member of the executive board of the 'Flora Nordica' project, since 2005. Member of the governing body of the Botanical Garden & Museum, Natural History Museum of Denmark, University of Copenhagen, 2005–2006. Deputy chairman of the Danish Botanical Society, 26.03.2009–25.03.2010. Chairman of the Danish Botanical Society, 25.03.2010–29.03.2012. Leader of 'Work Package 2: Integrating and Reshaping the Expert and Expertise Basis' under the 'European Distributed Institute of Taxonomy' (EDIT), an EU network of excellence, 2010–2011. Leader of 'Work Package 2: Coordination and Integration of European Expert Networks' under the EU project 'A Pan- European Species Directories Infrastructure' (PESI), 2010–2011. The Danish Botanical Society's representative in the presidium of WWF Denmark, 2010–2012. Principal investigator of the project 'Seidenfaden's Orchids: from Conventional Study Collection to Modern Research Facility and Gene Bank', the Augustinus Foundation, 2012-2017. Three co-investigators; total amount granted: 2,000,000 DKK.

Scientific focal areas Orchid systematics, biogeography and conservation.

Hybridization and its evolutionary implications.

Variation below species level – implications for adaptation and taxonomic methodology.

Google Scholar profile: https://scholar.google.dk/citations?user=5mS3RVQAAAAJ&hl=da&oi=ao

International relations Botanical field experience from Europe (Austria, Belgium, Denmark, England, Estonia, Finland, France, Germany, Greece, Iceland, Italy, the Netherlands, Norway, Portugal, Spain, Sweden, Wales), Asia (Cyprus, Indonesia, Japan, the Philippines, Singapore, Thailand, Turkey), Africa (the Mascarenes, Tunisia) and South America (Costa Rica). Member of the Committee for Mapping the Flora of Europe, 1996–2011. Participant in the DANCED/DANIDA project 'Capacity Building in the Field of Biodiversity, Queen Sirikit Botanic Garden', 1999–2005. Member of the Flora of Thailand editorial board, since 1999. Member of the organizing committee of the symposium 'Centenary Celebration of Thai-Danish Collaboration in Biodiversity Research', Chiang Mai, 2001. Regional adviser and representative of the Botanical Garden & Museum as national centre in the project 'Euro+Med PlantBase', 2001–2006. Member of the scientific and organizing committees of the 'International Seidenfaden Orchid Symposium', Chiang Mai, 2002. Member of the scientific committee of the conference 'Ophrys 2005', Chios, 2005. Member of the editorial advisory committee of the journal 'Rheedea', 2006–2008. Subject editor of Asian vascular plant taxonomy for Nordic Journal of Botany, 2007–2011. Member of the organizing committee of the conference '14th Flora of Thailand Meeting', Copenhagen, 2008. External research consultant, Queen Sirikit Botanic Garden, Chiang Mai, 2009–2010. Co-convenor of the symposium 'Orchids of Tropical Mainland Asia: New Scientific Insights' (as component of the '20th World Orchid Conference'), Singapore, 2011. Member of the organizing committee of the '15th Nordic Meeting on Tropical Botany', Copenhagen, 2014. Country representative (for Thailand) in the Orchid Specialist Group under the IUCN Species Survival Commission, since 2014. Member of the organizing committee of the symposium 'Tropical Plant Collections: Legacies from the Past? Essential Tools for the Future?' Copenhagen, 2015. Member of the IUCN Species Survival Commission, since 2017. Chairman of the committee that organizes the scientific conference of the '19th European Orchid Show & Conference' (to be held in Copenhagen, 2021).

Supervision of Ph.D. students Santi Watthana, University of Copenhagen, Denmark, Ph.D. 2005 Kanok-on Bunpha, Prince of Songkhla University, Thailand, Ph.D. 2013 Naiyana Tetsana, Prince of Songkhla University, Thailand, Ph.D. 2013 Anchalee Nuammee, Chulalongkorn University, Thailand, active.

Current research Revision of orchid genera for Flora of Thailand – and associated studies. Ex situ conservation and DNA barcoding of tropical Asian orchids. Phylogeny and endemism in the orchid genus Dendrochilum. Phylogeny and systematics of the orchid subtribe Eriinae. Genome evolution in holomycotrophic orchids. Application of stable isotopes to assess seasonal variation in the C and N sources of selected orchids.

Primary fields of research Orchid systematics, biogeography and conservation. Hybridization and its evolutionary implications. Variation below species level - implications for adaptation and taxonomic methodology.

Teaching

Publications Bernt Løjtnant 1946-2020 Gregersen, J., Løjtnant, C. L., Ovesen, C. H. & Pedersen, H. Æ., 2021, In: URT. 45, 2, p. 26-29

Phylogenetics of Dendrochilum (Orchidaceae): Evidence of pronounced morphological homoplasy and predominantly centric endemism Pedersen, H. Æ., Petersen, G., Gravendeel, B., Barkman, T. J., de Boer, H., P. Sulistyo, B. & Seberg, O., Dec 2019, In: Taxon. 68, 6, p. 1173-1188

A new species of Dendrobium (Orchidaceae: Epidendroideae: Malaxideae) described from previously perplexing specimens of the Seidenfaden collection Phueakkhlai, O., Suddee, S., Hodkinson, T. R., Sungkaew, S. & Pedersen, H. Æ., 2019, In: Phytotaxa. 419, 2, p. 197-202

A taxonomic revision of Liparis (Orchidaceae: Epidendroideae: Malaxideae) in Thailand Tetsana, N., Sridith, K., Watthana, S. & Pedersen, H. Æ., 2019, In: Phytotaxa. 421, 1, p. 1-65

A taxonomic revision of Oberonia (Orchidaceae: Epidendroideae: Malaxideae) in Thailand Bunpha, K., Sridith, K. & Pedersen, H. Æ., 2019, In: Phytotaxa. 420, 2, p. 102-156

Field guide to the orchids of Europe and the Mediterranean Kühn, R., Pedersen, H. Æ. & Cribb, P., 2019, Kew: Kew Publishing. 430 p.

Mycoheterotrophic Epirixanthes (Polygalaceae) has a typical angiosperm mitogenome but unorthodox plastid genomes Petersen, G., Darby, H., Lam, V. K. Y., Pedersen, H. Æ., Merckx, V. S. F. T., Zervas, A., Seberg, O. & Graham, S. W., 2019, In: Annals of Botany. 124, p. 791-807

On scientific requirements for presentation of "new records": the case of Dendrobium ruckeri (Orchidaceae) Rujichaipimon, W., Pedersen, H. Æ., Phueakkhlai, O., Suddee, S., Sungkaew, S. & Traiperm, P., 2019, In: Thai Forest Bulletin (Botany). 47, 2, p. 152-158

Pollination-system diversity in Epipactis (Orchidaceae): new insights from studies of E. flava in Thailand Pedersen, H. Æ., Srimuang, K., Bänziger, H. & Watthana, S., 1 Oct 2018, In: Plant Systematics and Evolution. 304, 8, p. 895-909

On the "Seidenfaden Collection" and the multiple roles Botanical Gardens can play in orchid concervation Pedersen, H. Æ., Find, J. I., Petersen, G. & Seberg, O., 1 Apr 2018, In: Lankesteriana. 18, 1, p. 1-12 12 p.

Dendrobium chrysocrepis (Orchidaceae), a new record for Thailand Phueakkhlai, O., Suddee, S., Hodkinson, T. R., Pedersen, H. Æ., Srisom, P. & Sungkaew, S., 1 Jan 2018, In: Thai Forest Bulletin. 46, 2, p. 134-137 4 p.

A New Species of Crepidium (Orchidaceae) from Thailand Nuammee, A., Seelanan, T. & Pedersen, H. A. E., 2018, In: Systematic Botany. 43, 4, p. 950-955

A novel technique for determination of the fructose, glucose and sucrose distribution in nectar from orchids by HPLC- ELSD Lindqvist, D. N., Pedersen, H. Æ. & Rasmussen, L. H., 2018, In: Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences. 1081-1082, p. 126-130 5 p.

Additions to the orchid flora of Laos and taxonomic notes on orchids of the Indo-Burma region Kumar, P., Gale, S. W., Pedersen, H. Æ., Phaxaysombath, T., Bouamanivong, S. & Fischer, G. A., 2018, In: Taiwania. 63 , 1, p. 61-83 23 p.

Genome Reports: Contrasted Genes and Dwarfed Plastome in Mýcoheterotrophic Sciaphila thaidanica (Triuridaceae, Pandanales) Petersen, G., Zervas, A., Pedersen, H. Æ. & Seberg, O., 2018, In: Genome Biology and Evolution. 10, 3, p. 976-981 6 p.

Phylogenetics and systematics of Eria and related genera (Orchidaceae: Podochileae) Ng, Y. P., Schuiteman, A., Pedersen, H. Æ., Petersen, G., Watthana, S., Seberg, O., Pridgeon, A. M., Cribb, P. J. & Chase, M. W., 2018, In: Botanical Journal of the Linnean Society. 186, 2, p. 179-201 23 p.

Screening for ptaquiloside in ferns: using herbarium specimens for qualitative mapping purposes Rasmussen, L. H. & Pedersen, H. Æ., Nov 2017, In: Phytochemical Analysis. 28, 6, p. 575-583 9 p.

Orkidéer i Europa: smukke, specielle og sårbare Mossberg, B. & Pedersen, H. Æ., 23 May 2017, København: Gyldendal. 208 p.

Een orchidé - mange kunstneriske udtryk Løjtnant, B. & Pedersen, H. Æ., 2016, Klitmøller: BFN's Forlag. 109 p.

Notes on Crepidium (Orchidaceae): two new combinations, a putative natural hybrid, and four species newly recorded for Thailand Nuammee, A., Seelanan, T., Suddee, S. & Pedersen, H. Æ., 2016, In: Thai Forest Bulletin (Botany). 44, 1, p. 35-44 10 p.

Plastid DNA microsatellite data do not support recognition of subspecies in Coeloglossum viride (L.) Hartm. (Orchidaceae) in northern Europe Hedrén, M. & Pedersen, H. Æ., 2016, Contributions to botany: dedicated to Inga Hedberg. Lidén, M. & Morrison, D. (eds.). Uppsala University, p. 81-91 11 p. (Symbolae Botanicae Upsalienses, Vol. 38).

Strengthening the taxonomic backbone of Thai orchid conservation: genetic fingerprinting and morphometry applied to a species complex in Geodorum Pedersen, H. Æ., Srimuang, K. & Watthana, S., 2016, In: Annals of Botany. 118, 1, p. 125-133 9 p.

A re-examination of the life and work of A.F.G. Kerr and of his colleagues and friends Parnell, J. A. N., Pilla, F., Simpson, D. A., Van Welzen, P. C., Chayamarit, K., Chantaranothai, P., Boyce, P. C., Bygrave, P., Byrne, C., Chen, S., Couch, C., Curtis, T., Dransfield, S., Duyfjes, B. E. E., Eianthong, W., Esser, H. J., Grote, P. J., Hua, Z., Jebb, M. H. P., Kirkup, D. W., Loc, P. K., Larsen, S. S., Macklin, J., Madern, A., Meade, C., Merklinger, F., Middleton, D. J., Moat, J., Muasya, A. M., Nakmuenwai, P., Pedersen, H. Æ., Pendry, C. A., Prajaksood, A., Pooma, R., Preusapan, K., Puglisi, C., Sathapattayanon, A., Sukkharak, P., Staples, G., Strijk, J., Suddee, S., Sungkaew, S., Tangjitman, K., Teerwatananon, A., Tovaranonte, J., Ung, T., Blasi, A. T., De Wilde, W. J. J. O., Wilkin, P. & Yahara, T., 2015, In: Thai Forest Bulletin (Botany). 43, p. 111-131 21 p.

Botanisk begejstring - et portræt af Niels Faurholdt (1947-2014) Pedersen, H. Æ., 2015, In: URT. 39, 1, p. 26-31 6 p.

Orkidéernes ambassadør Pedersen, H. Æ., 2015, In: Naturhistorier. 2014-2015, p. 14-17 4 p.

PESI - a taxonomic backbone for Europe de Jong, Y., Kouwenberg, J., Boumans, L., Hussey, C., Hyam, R., Nicolson, N., Kirk, P., Paton, A., Michel, E., Guiry, M., Boegh, P., Pedersen, H. Æ., Enghoff, H., von Raab-Straube, E., Güntsch, A., Geoffroy, M., Müller, A., Kohlbecker, A., Berendsohn, W., Appeltans, W., Arvanitidis, C., Vanhoorne, B., Declerck, J., Vandepitte, L., Hernandez, F., Nash, R., Costello, M., Ouvrard, D., Bezard-Falgas, P., Bourgoin, T., Wetzel, F., Glöckler, F., Korb, G., Ring, C., Hagedorn, G., Häuser, C., Aktaç, N., Asan, A., Ardelean, A., Borges, P., Dhora, D., Khachatryan, H., Malicky, M., Ibrahimov, S., Tuzikov, A., De Wever, A., Moncheva, S., Spassov, N., Chobot, K., Popov, A., Boršić, I., Sfenthourakis, S., Kõljalg, U., Uotila, P., Olivier, G., Dauvin, J-C., Tarkhnishvili, D., Chaladze, G., Tuerkay, M., Legakis, A., Peregovits, L., Gudmundsson, G., Ólafsson, E., Lysaght, L., Galil, B., Raimondo, F., Domina, G., Stoch, F., Minelli, A., Spungis, V., Budrys, E., Olenin, S., Turpel, A., Walisch, T., Krpach, V., Gambin, M., Ungureanu, L., Karaman, G., Kleukers, R., Stur, E., Aagaard, K., Valland, N., Moen, T., Bogdanowicz, W., Tykarski, P., Węsławski, J., Kędra, M., M. de Frias Martins, A., Abreu, A., Silva, R., Medvedev, S., Ryss, A., Šimić, S., Marhold, K., Stloukal, E., Tome, D., Ramos, M., Valdés, B., Pina, F., Kullander, S., Telenius, A., Gonseth, Y., Tschudin, P., Sergeyeva, O., Vladymyrov, V., Rizun, V., Raper, C., Lear, D., Stoev, P., Penev, L., Rubio, A., Backeljau, T., Saarenmaa, H. & Ulenberg, S., 2015, In: Biodiversity Data Journal. 3, e5848.

Seed micromorphology in Dactylorhiza Necker ex Nevski (Orchidaceae) and allied genera Gamarra, R., Galán, P., Pedersen, H. Æ., Ortúñez, E. & Sanz, E., 2015, In: Turkish Journal of Botany. 39, 2, p. 298-309 12 p.

Tidligere inventering og kortlægning af den danske flora Pedersen, H. Æ., 2015, Atlas Flora Danica. Hartvig, P. & Vestergaard, P. (eds.). Gyldendal, Vol. 1. p. 135-150 16 p.

Liparis rubescens sp. nov. (Orchidaceae) from Thailand Tetsana, N., Pedersen, H. Æ. & Sridith, K., 2014, In: Nordic Journal of Botany. 32, 5, p. 555-558 4 p.

Oberonia pygmaea sp. nov. (Orchidaceae) from Thailand Bunpha, K., Pedersen, H. Æ. & Sridith, K., 2014, In: Nordic Journal of Botany. 32, 2, p. 143-145 3 p.

Character intercorrelation and the potential role of phenotypic plasticity in orchids: a case study of the epiphyte Liparis resupinata Tetsana, N., Pedersen, H. Æ. & Sridith, K., 2014, In: Plant Systematics and Evolution. 300, 3, p. 517-526 10 p.

Foldfrø (Laserpitium latifolium) i Danmark: forekomst, trusler og muligheder for bevaring Pedersen, H. Æ. & Faurholdt, N., 2014, In: URT. 38, p. 102-112

How does sampling strategy influence detection of morphological variation in orchids? A case-study of the epiphyte Oberonia hosseusii Bunpha, K., Pedersen, H. Æ. & Sridith, K., 2014, In: Plant Systematics and Evolution. 300, 4, p. 585-594 10 p.

Neotypification of Zeuxine agyokuana (Goodyerinae, Orchidoideae, Orchidaceae) with a new synonym Tian, H-Z., Bhattacharjee, A., Kumar, P., Hsu, T-C. & Pedersen, H. Æ., 2014, In: Annales Botanici Fennici. 51, 1-2, p. 101- 105 5 p.

Niels Faurholdt † (01.04.1947 - 19.04.2014) Pedersen, H. Æ., 2014, In: Berichte aus den Arbeitskreisen Heimische Orchideen. 31, 1, p. 261-263

Orchidaceae 2 (Epidendroideae p.p.: Neottieae, Tropidieae, Nervilieae, Gastrodieae, Thaieae, Calypsoeae, Arethuseae, Collabieae, Cymbidieae) Pedersen, H. Æ., Kurzweil, H., Suddee, S., de Vogel, E. F., Cribb, P. J., Chantanaorrapint, S., Watthana, S., Gale, S. W., Seelanan, T. & Suwanphakdee, C., 2014, Flora of Thailand. Santisuk, T. & Balslev, H. (eds.). Bangkok: The Forest Herbarium, Vol. 12(2). p. 303-670 (Flora of Thailand; No. 2, Vol. 12).

Vandplanten Cabomba caroliniana, nu også i Danmark Pedersen, H. Æ., 2014, In: URT. 38, p. 25-28

Vegetal grave goods in a female burial on Bornholm (Denmark) from the Late Roman Iron Age period interpreted in a comparative European perspective Karg, S., Hansen, U. L., Walldén, A. M., Glastrup, J., Pedersen, H. Æ. & Nielsen, F. O. S., 2014, In: Danish Journal of Archaeology. 3, 1, p. 52-60 9 p.

Establishing species distributions in large tropical plant genera: insights from twelve new Thai records of Oberonia ( Orchidaceae) Bunpha, K., Pedersen, H. Æ. & Sridith, K., Sep 2013, In: Blumea. 58, 1, p. 71-76 6 p.

Orchids in the torrent: on the circumscription, conservation and rheophytic habit of Epipactis flava Pedersen, H. Æ., Watthana, S. & Srimuang, K., Jul 2013, In: Botanical Journal of the Linnean Society. 172, 3, p. 358-370 13 p.

Pollination biology of Luisia curtisii (Orchidaceae): indications of a deceptive system operated by beetles Pedersen, H. Æ., Watthana, S., Kocyan, A. & Srimuang, K., Jan 2013, In: Plant Systematics and Evolution. 299, 1, p. 177- 185 9 p.

Dendrochilum schaiblei, a new species from Sulawesi - with notes on the little-known D. macrobulbon Pedersen, H. Æ., O'Byrne, P. & Clements, M. A., 2013, In: Malesian Orchid Journal. 12, p. 13-18

Eria rhomboidalis: a true Eria and a new record for Vietnam Schuiteman, A., Pedersen, H. Æ. & Ng, Y. P., 2013, In: Orchid Digest. 77, 3, p. 136-140 5 p.

Biological studies in Sirindhornia: revealing the nature of three terrestrial orchid species on the Thai red list Watthana, S., Srimuang, K. & Pedersen, H. Æ., 2013, Proceedings of the 20th World Orchid Conference, Singapore, 2011. Elliott, J., Kurzweil, H. F., O'Byrne, P., Tan, K. W., van der Schans, A. S., Wong, S. M. & Yam, T. W. (eds.). National Parks Board & Orchid Society of South East Asia, p. 149-152

Carpenter bees and the orchid of a princess: : natural pollination of Sirindhornia monophylla in Thailand Srimuang, K., Bänziger, H., Pedersen, H. Æ. & Watthana, S., 2013, In: Taiwania. 58, 3, p. 163-170 8 p.

Five species of Liparis (Orchidaceae) newly recorded for Thailand Tetsana, N., Pedersen, H. Æ. & Sridith, K., 2013, In: Thai Forest Bulletin (Botany). 41, p. 48-55 8 p.

Flora projects as drivers of research on multiple aspects of biodiversity - exemplified by the treatment of the Orchidaceae for Flora of Thailand Pedersen, H. Æ. & Watthana, S., 2013, Proceedings of the 20th World Orchid Conference, Singapore, 2011. Elliott, J., Kurzweil, H. F., O'Byrne, P., Tan, K. W., van der Schans, A. S., Wong, S. M. & Yam, T. W. (eds.). Singapore: National Parks Board & Orchid Society of South East Asia, p. 128-131 3 p.

Hybrids and the flora of Thailand Parnell, J. A. N., Pedersen, H. Æ., Hodkinson, T. R., Balslev, H., van Welzen, P. C., Simpson, D., Middleton, D. J., Esser, H-J., Pooma, R., Utteridge, T. & Staples, G., 2013, In: Thai Forest Bulletin (Botany). 41, p. 1-9 9 p.

Is it really worthwhile revising the same flora repeatedly? A case study in Thai Orchidaceae Pedersen, H. Æ., 2013, In: Thai Forest Bulletin (Botany). 41, p. 145-156 12 p.

Kan danske orkidé-populationer flyttes? Erfaringer fra et eksperiment med Skov-Hullæbe (Epipactis helleborine s.s.) Pedersen, H. Æ., 2013, In: URT. 37, 3, p. 86-92

Notes on the orchid flora of Thailand (III) Pedersen, H. Æ. & Watthana, S., 2013, In: Thai Journal of Botany. 5, 1, p. 53-61 8 p.

Notes on the orchid flora of Thailand (IV) Pedersen, H. Æ. & Suksathan, P., 2013, In: Thai Journal of Botany. 5, 1, p. 63-71 9 p.

Overraskende nyt fund af Burreskærm (Turgenia latifolia) Pedersen, H. Æ. & Faurholdt, N., 2013, In: URT. 37, 4, p. 132-134 3 p.

Systematics and conservation genetics of Dactylorhiza majalis ssp. elatior (Orchidaceae) on Gotland Hedrén, M., Nordström, S., Pedersen, H. Æ. & Ståhlberg, D., Jun 2012, In: Nordic Journal of Botany. 30, 3, p. 257-272 16 p.

Blærerodfamilien, Lentibulariaceae Pedersen, H. Æ., 2012, Dansk flora. Frederiksen, S., Rasmussen, F. N. & Seberg, O. (eds.). 2. ed. Gyldendal, p. 550-552 3 p.

Botanikerstafet: Henrik Ærenlund Pedersen Pedersen, H. Æ., 2012, In: URT. 36, 3, p. 90-93

Genetic diversity, compatibility patterns and seed quality in isolated populations of Cypripedium calceolus (Orchidaceae) Pedersen, H. Æ., Rasmussen, H. N., Kahandawala, I. M. & Fay, M. F., 2012, In: Conservation Genetics. 13, 1, p. 89-98 10 p.

Orkidefamilien, Orchidaceae Pedersen, H. Æ., 2012, Dansk flora. Frederiksen, S., Rasmussen, F. N. & Seberg, O. (eds.). 2. ed. Gyldendal, p. 109-130 22 p.

(2028) Proposal to conserve the name Stichorkis (Orchidaceae, Malaxideae) with a conserved type Schuiteman, A., Pedersen, H. Æ. & Friis, I., 2011, In: Taxon. 60, 5, p. 1521-1522

Brachycorythis neglecta newly recorded for China and Laos Pedersen, H. Æ., 2011, In: Orchid Review. 119, p. 150-154 5 p.

A Pan-European Species-directories Infrastructure (PESI) - towards a taxonomic backbone for Europe de Jong, Y., Kouwenberg, J., Boumans, L., Pedersen, H. Æ., Boegh, P., Costello, M., Nash, R., Aktac, N., Hussey, C., Hyam, R., Bourgin, T., Guentsch, A., Geoffroy, M., Berendsohn, W., Hernandez, F., Vanhoorne, B. & Appeltans, W., 2011 , In: European Distributed Institute of Taxonomy. Newsletter. 25, p. 18-19 2 p.

A new species of Lecanorchis (Orchidaceae) from Thailand Suddee, S. & Pedersen, H. Æ., 2011, In: Taiwania. 56, 1, p. 37-41 5 p.

Cypripedium calceolus germination in situ: seed longevity, and dormancy breakage by long incubation and cold winters Rasmussen, H. N. & Pedersen, H. Æ., 2011, In: European Journal of Environmental Sciences. 1, 2, p. 69-70 2 p.

Integrating Research Grants: an effective tool for integrating the taxonomic work force Schmidt, J. B. & Pedersen, H. Æ., 2011, In: European Distributed Institute of Taxonomy. Newsletter. 25, p. 31-32 2 p.

Lectotypification of the name Epipactis leptochila (Orchidaceae) Pedersen, H. Æ., 2011, In: Nordic Journal of Botany. 29, 2, p. 182-183 2 p.

Nomenclatural notes on four varieties of Dactylorhiza majalis s.l. (Orchidaceae) Pedersen, H. Æ., 2011, In: Journal Europäischer Orchideen. 43, p. 79-84

Orchidaceae 1 (Cypripedioideae, Orchidoideae, Vanilloideae) Pedersen, H. Æ., Kurzweil, H., Suddee, S. & Cribb, P. J., 2011, Flora of Thailand. Santisuk, T. & Larsen, K. (eds.). Bangkok: The Forest Herbarium, Vol. 12(1). p. 1-302

Rare Ophrys taxa from southern Anatolia - new distribution records and a new combination Faurholdt, N., Pedersen, H. Æ. & Christiansen, S. G., 2011, In: Berichte aus den Arbeitskreisen Heimische Orchideen. 28 , 2, p. 206-232

Three new species of Dendrochilum, with notes on the practice of formally describing cultivated species of unknown provenance Pedersen, H. Æ., 2011, In: Malesian Orchid Journal. 7, p. 117-124 8 p.

(1939) Proposal to conserve the name Orchis occidentalis against O. kerryensis (Orchidaceae) Bateman, R. M., Chase, M. W., Denholm, I., Fay, M. F., Hedrén, M., Pedersen, H. Æ. & Sayers, B., 2010, In: Taxon. 59, 3 , p. 977-978 2 p.

Alfred Hansen, 1925-2008 Friis, I. & Pedersen, H. Æ., 2010, In: Taxon. 59, 6, p. 1942-1943 2 p.

Aspects of biosubsistence in Sirindhornia (Orchidaceae): are the narrow endemics more reproductively restricted than their widespread relative? Srimuang, K., Watthana, S., Pedersen, H. Æ., Rangsayatorn, N. & Eungwanichayapant, P. D., 2010, In: Annales Botanici Fennici. 47, 6, p. 449-459 11 p.

Danmarks orkidéflora er fredet - men alligevel truet Faurholdt, N. & Pedersen, H. Æ., 2010, In: Natur og Miljoe (Copenhagen). 2, p. 26-29 4 p.

Danmarks vilde orkidéer Pedersen, H. Æ. & Faurholdt, N., 2010, København: Gyldendal. 289 p.

Floristiske meddelelser fra Dansk Herbarium, VIII. Noter om Priklæbet Gøgeurt og Baltisk Gøgeurt Pedersen, H. Æ., 2010, In: URT. 34, 1, p. 33-37 5 p.

Flowering phenology, floral display and reproductive success in the genus Sirindhornia (Orchidaceae): a comparative study of three pollinator-rewarding species Srimuang, K., Watthana, S., Pedersen, H. Æ., Rangsayatorn, N. & Eungwanichayapant, P. D., 2010, In: Annales Botanici Fennici. 47, 6, p. 439-448 10 p.

Genetic and morphological variation of the Southern Marsh-orchid in western Europe: implications for taxonomy and nomenclature Pedersen, H. Æ., 2010, In: Journal Europäischer Orchideen. 42, 1, p. 83-110 28 p.

Georges Bronckart's collections and drawings of Vietnam orchids Billiet, F., Pedersen, H. Æ. & Robbrecht, E., 2010, In: Taxon. 59, 4, p. 1180-1187 8 p.

Inadequate morphometric analyses have contributed to oversplitting in European orchids: a case study in Dactylorhiza (Orchidaceae) Pedersen, H. Æ., 2010, Diversity, phylogeny, and evolution in the monocotyledons: Proceedings of the Fourth International Conference on the Comparative Biology of the Monocotyledons and the Fifth International Symposium on Grass Systematics and Evolution. Seberg, O., Petersen, G., Barfod, A. S. & Davis, J. I. (eds.). Aarhus Universitetsforlag, p. 193-212 19 p.

On the distinction of Dactylorhiza baltica and D. pardalina (Orchidaceae) and the systematic affinities of geographically intermediate populations Pedersen, H. Æ. & Hedrén, M., 2010, In: Nordic Journal of Botany. 28, 1, p. 1-12

Perspectives on orchid conservation in Queen Sirikit Botanic Garden: recommendations based on a SWOT analysis Pedersen, H. Æ., 2010, In: Thai Journal of Botany. 2, Special Issue, p. 1-13 13 p.

Species delimitation and recognition in the Brachycorythis helferi complex (Orchidaceae) resolved by multivariate morphometric analysis Pedersen, H. Æ., 2010, In: Linnean Society. Botanical Journal. 162, 1, p. 64-76 13 p.

The Seidenfaden Database of Orchids: a new online facility for research on tropical Asian Orchidaceae Pedersen, H. Æ., 2010, In: Orchid Research Newsletter. 56, p. 5-7 3 p.

Cephalanthera exigua rediscovered: new insights in the taxonomy, habitat requirements and breeding system of a rare mycoheterotrophic orchid Pedersen, H. Æ., Watthana, S., Roy, M., Suddee, S. & Selosse, M-A., 2009, In: Nordic Journal of Botany. 27, p. 460-468

Apochromic populations of Dactylorhiza incarnata s.l. (Orchidaceae): diversity and systematic significance as revealed by allozyme markers and morphology Pedersen, H. Æ., 2009, In: Botanical Journal of the Linnean Society. 159, p. 396-407

Flueblomster fra Marokko til Mellemøsten: orkidéslægten Ophrys i Nordafrika og Levanten Faurholdt, N. & Pedersen, H. Æ., 2009, København: Dansk Orchide Klub. 124 p.

Genetic diversity in Cypripedium calceolus (Orchidaceae) with a focus on north-western Europe, as revealed by plastid DNA length polymorphisms Fay, M. F., Bone, R., Cook, P., Kahandawala, I., Greensmith, J., Harris, S., Pedersen, H. Æ., Ingrouille, M. J. & Lexer, C., 2009, In: Annals of Botany. 104, p. 517-525 9 p.

Gunnar Seidenfaden and his heritage: developments in the diversity and organization of Thai orchid studies Pedersen, H. Æ., Watthana, S. & Srimuang, K., 2009, In: Thai Forest Bulletin (Botany). special issue, p. 156-168

Notes on the orchid flora of Thailand (I) Pedersen, H. Æ. & Ormerod, P., 2009, In: Taiwania. 54, p. 213-218 6 p.

Notes on the orchid flora of Thailand (II) Pedersen, H. Æ. & Suksathan, P., 2009, In: Taiwania. 54, 4, p. 317-322 6 p.

Two new combinations under Dactylorhiza majalis (Orchidaceae) Pedersen, H. Æ., 2009, In: Journal Europäischer Orchideen. 41, 3/4, p. 503-506 4 p.

Alfred Hansen: 2. oktober 1925 - 29. januar 2008 Friis, I., Wind, P. & Pedersen, H. Æ., 2008, In: URT. 2, p. 68-72

Botanisk diversitet på rad og række Barfod, A. S., Gustafsson, M. H. G., Øllgaard, B. & Pedersen, H. Æ., 2008, In: URT. 32, 2, p. 64-67

Floristiske meddelelser fra Dansk Herbarium, VII. Noter om Krat-Ranunkel, Storbladet Lungeurt og Bakkegøgeurt Pedersen, H. Æ., 2008, In: URT. 32, 1, p. 30-38

Notes on three orchids from Asia Minor Faurholdt, N. & Pedersen, H. Æ., 2008, In: Journal Europäischer Orchideen. 40, 4, p. 693-698

Phorophyte diversity, substrate requirements and fruit set in Dendrobium scabrilingue Lindl. (Asparagales: Orchidaceae): basic observations for re-introduction experiments Watthana, S. & Pedersen, H. Æ., 2008, In: The Natural History Journal of Chulalongkorn University. 8, 2, p. 135-142

Thailands orkidéflora udforskes - for tredje gang Pedersen, H. Æ., 2008, In: Orkideer. 29, 2, p. 10-16

Ophrys: the bee orchids of Europe Pedersen, H. Æ. & Faurholdt, N., 2007, Kew: Royal Botanic Gardens. 297 p.

Changes to Dendrochilum Pedersen, H. Æ., 2007, In: The Orchid Review. 115, p. 220-226

Hotspots of narrow endemism: adequate focal points for conservation in Dendrochilum (Orchidaceae) Pedersen, H. Æ., 2007, In: Lankesteriana. 7, p. 83-92

Patterns of polyploid evolution in Greek marsh orchids (Dactylorhiza; Orchidaceae) as revealed by allozymes, AFLPs, and plastid DNA data Hedrén, M., Nordström, S., Persson Hovmalm, H. A., Pedersen, H. Æ. & Hansson, S., 2007, In: American Journal of Botany. 94, p. 1205-1218

Taxonomic revision of the Dactylorhiza majalis subsp. purpurella complex (Orchidaceae): a morphometric approach Pedersen, H. Æ., 2007, In: Journal Europäischer Orchideen. 39, p. 341-366

New combinations under Ophrys fuciflora (Orchidaceae) Pedersen, H. Æ. & Faurholdt, N., 2006, In: Berichte aus den Arbeitskreisen Heimische Orchideen. 22, 2, p. 4-8

Orkidefamilien, Orchidaceae; Blærerodfamilien, Lentibulariaceae Pedersen, H. Æ., 2006, Dansk Flora. Frederiksen, S., Rasmussen, F. N. & Seberg, O. (eds.). København: Gyldendal, p. 109-130, 549-551

Substrate diversity, demography, and fruit set in two populations of the epiphyte Pomatocalpa spicatum (Orchidaceae) in Thailand Watthana, S., Pedersen, H. Æ. & Suddee, S., 2006, In: Selbyana. 27, p. 165-174

Systematics and evolution of the Dactylorhiza romana/ sambucina polyploid complex (Orchidaceae) Pedersen, H. Æ., 2006, In: Botanical Journal of the Linnean Society. 152, p. 405-434

(1702) Proposal to conserve the name Epipactis purpurata against E. viridiflora (Orchidaceae) Pedersen, H. Æ. & Reinhardt, J., 2005, In: Taxon. 54, 3, p. 836-837

A new miniature Dendrochilum Pedersen, H. Æ., 2005, In: The Orchid Review. 113, 1265, p. 286-287

Breeding system, post-pollination growth, and seed dispersal in Gastrodia exilis (Orchidaceae) Pedersen, H. Æ., Watthana, S., Suddee, S. & Sasirat, S., 2005, In: Natural History Bulletin of the Siam Society. 52, 1, p. 9-26

Endemism in the orchid flora of Thailand Pedersen, H. Æ., 2005, In: Oasis. Supplement 4, p. 2-9

Two new combinations in Ophrys (Orchidaceae) Pedersen, H. Æ. & Faurholdt, N., 2005, In: Journal Europäischer Orchideen. 37, 2, p. 287-290

Dactylorhiza majalis s.l. (Orchidaceae) in acid habitats: variation patterns, taxonomy, and evolution Pedersen, H. Æ., 2004, In: Nordic Journal of Botany. 22, 6, p. 641-658

Epipactis leptochila x phyllanthes: an unexpected new natural hybrid Pedersen, H. Æ., Faurholdt, N. & Reinhardt, J., 2004, In: The Orchid Review. 112, 1257, p. 151-154

Conflicting classifications of Nordic polymorphic orchids: a critical assessment Pedersen, H. Æ., 2004, In: Journal Europäischer Orchideen. 36, 4, p. 869-916

Floristiske meddelelser fra Dansk Herbarium: VI. Noter om Klit-Gøgeurt, Traunsteiners Gøgeurt, Mos-Gøgeurt og Thy- Gøgeurt Pedersen, H. Æ., 2004, In: URT. 28, 2, p. 53-60

Floristiske meddelelser fra Dansk Herbarium: V. Noter om Sump-Nælde, Sod-Siv, Rød Hullæbe, Hollandsk Hullæbe og Pukkellæbe Pedersen, H. Æ., 2004, In: URT. 28, 1, p. 19-25

The Seidenfaden orchid collections in Copenhagen - their origin, arrangement and utilization Pedersen, H. Æ., 2004, Orchid memories. A tribute to Gunnar Seidenfaden. Manilal, K. S. & Kumar, C. S. (eds.). Calicut: Mentor Books, p. 1-6

Three new species of Dendrochilum (Orchidaceae) and their phylogenetic positions according to plastid and nuclear ribosomal ITS sequences Pedersen, H. Æ., Gravendeel, B. & Mudiana, D., 2004, In: Blumea - Journal of plant taxonomy and plant geography. 49, p. 351-360

(1600) Proposal to conserve the name Orchis majalis against O. elata, O. vestita, and O. sesquipedalis (Dactylorhiza: Orchidinae: Orchidaceae) Pedersen, H. Æ., Hedrén, M. & Bateman, R. M., 2003, In: Taxon. 3, p. 633-634

A showy new Dendrobium from Thailand and Laos Ormerod, P. & Pedersen, H. Æ., 2003, In: The Orchid Review. 111, 1254, p. 341-343

Contributions to the orchid flora of Thailand XIV Seidenfaden, G. & Pedersen, H. Æ., 2003, In: Nordic Journal of Botany. 22, p. 525-534

Sirindhornia, a new orchid genus from Southeast Asia Pedersen, H. Æ., Suksathan, P. & Indhamusika, S., 2003, In: Nordic Journal of Botany. 22, p. 391-403

Floristiske meddelelser fra Dansk Herbarium: IV. Noter om Kamillebladet Månerude, Farve-Mysike og Thors Blærerod Pedersen, H. Æ., 2002, In: URT. 26, 3, p. 82-86

Ophrys - versuchweise Definitionen der Kategorien Art, Unterart und Varietät in der Gattung und einige daraus resultierende taxonomische Änderungen Pedersen, H. Æ. & Faurholdt, N., 2002, In: Die Orchidee. 53, 3, p. 341-346

Priklæbet Gøgeurt (Dactylorhiza majalis subsp. praetermissa) i Østdanmark - forekomst og oprindelse Vikstrøm, T. & Pedersen, H. Æ., 2002, In: Flora og Fauna. 108, 3, p. 57-64

Floristiske meddelelser fra Dansk Herbarium: III. Noter om Hjortetunge, Trompetblad og Blodplettet Gøgeurt Pedersen, H. Æ., 2001, In: URT. 25, p. 122-129

Late-flowering dune populations of Dactylorhiza incarnata (Orchidaceae): variation patterns and taxonomic inferences Pedersen, H. Æ., 2001, In: Nordic Journal of Botany. 21, p. 177-186

Nikkende Hullæbe - økologi og fremtidsudsigter i Danmark Pedersen, H. Æ., Faurholdt, N. & Christiansen, S. G., 2001, In: URT. 25, p. 18-27

One new and one rediscovered species of Dendrochilum (Orchidaceae) from the Philippines Pedersen, H. Æ., 2001, In: Lindleyana. 16, p. 231-234

The orchids of Denmark in a national and global context Pedersen, H. Æ., 2001, In: Caesiana. 16, p. 1-12

(1457) Proposal to reject the name Orchis latifolia L. (Orchidaceae) Pedersen, H. Æ., 2000, In: Taxon. 49, p. 299-301

Botanisk Museums samlinger og potentiale for dansk naturovervågning Pedersen, H. Æ., 2000, In: URT. 24, p. 80-82

Genetic variation in three species of Epipactis (Orchidaceae): Geographic scale and evolutionary inferences Ehlers, B. K. & Pedersen, H. Æ., 2000, In: Biological Journal of the Linnean Society. 69, p. 411-430

Local evolution of obligate autogamy in Epipactis helleborine subsp. neerlandica (Orchidaceae) Pedersen, H. Æ. & Ehlers, B. K., 2000, In: Plant Systematics and Evolution. 223, p. 173-183

On the status and synonymy of the names Dactylorhiza majalis and D. incarnata (Orchidaceae) and their typification Pedersen, H. Æ., 2000, In: Taxon. 49, p. 539-544

Storblomstret Hullæbe (Epipactis leptochila) - udbredelse, økologi og status i Danmark Faurholdt, N. & Pedersen, H. Æ., 2000, In: Flora og Fauna. 106, 2, p. 29-40

Botaniske lokaliteter og de rød- og gullistede karplanter ved Møns Klint Pedersen, H. Æ. & Faurholdt, N., 1999, In: URT. 23, 3, p. 79-83

Floristiske meddelelser fra Dansk Herbarium: I. Noter om Skærm-Elm, Liden Vortemælk, Røllike-Gyvelkvæler og Priklæbet Gøgeurt Pedersen, H. Æ., 1999, In: URT. 23, 2, p. 64-71

Floristiske meddelelser fra Dansk Herbarium, II. Noter om Lyng-Vikke, Tallerken-Blærerod, Hollandsk Hullæbe og Tætblomstret Hullæbe Pedersen, H. Æ., 1999, In: URT. 23, 4, p. 133-140

Landplanter i Øresundsområdet Pedersen, H. Æ., 1999, Öresund Naturligtvis. Smaksprov på Sundets natur och miljö. Bentz, P-G. & Meyer, O. E. (eds.). København/Malmø: Öresund Naturligtvis, p. 55-59

Ny lokalitet for Bakke-Gøgeurt (Orchis ustulata) - med noter om artens fænologiske og morfologiske variation Jensen, J. M. & Pedersen, H. Æ., 1999, In: Flora og Fauna. 105, 2, p. 29-36

Allozyme variation and genetic integrity of Dactylorhiza incarnata (Orchidaceae) Pedersen, H. Æ., 1998, In: Nordic Journal of Botany. 18, 1, p. 15-21

Nikkende Hullæbe (Epipactis phyllanthes) - en miskendt dansk orkidé Faurholdt, N., Pedersen, H. Æ. & Christiansen, S. G., 1998, In: URT. 22, 2, p. 52-59

Rød Hullæbe (Epipactis atrorubens) og Rød Skovlilje (Cephalanthere rubra) i det dansk-tyske grænseland Pedersen, H. Æ., 1998, In: Flora og Fauna. 104, 1, p. 17-21

Species concept and guidelines for infraspecific taxonomic ranking in Dactylorhiza (Orchidaceae) Pedersen, H. Æ., 1998, In: Nordic Journal of Botany. 18, 3, p. 289-310

Århusskovenes flora: En undersøgelse af karplantefloraens diversitet, autenticitet og beskyttelsesbehov Pedersen, H. Æ. & Hansen, A. M., 1998, In: Gejrfuglen. 34, 1, p. 2-79

A critical approach to Ophrys calypus (Orchidaceae) and to the records of O. holoserica subsp. apulica from Greece Pedersen, H. Æ. & Faurholdt, N., 1997, In: Flora Mediterranea. 7, p. 153-162

A revised subdivision and bibliographical survey of Dendrochilum (Orchidaceae) Pedersen, H. Æ., Wood, J. J. & Comber, J. B., 1997, In: Opera Botanica. 130, p. 1-85

Baltisk Gøgeurt (Dactylorhiza majalis ssp. baltica) - første sikre fund i Danmark Pedersen, H. Æ. & Faurholdt, N., 1997, In: Flora og Fauna. 103, 4, p. 95-105

Beiträge zur Orchideenflora der ostmediterranen Inseln Rhodos und Zypern Pedersen, H. Æ. & Faurholdt, N., 1997, In: Die Orchidee. 48, 6, p. 232-236

Dendrochilum cootesii, a new protandrous species from the Philippines Pedersen, H. Æ., 1997, In: Lindleyana. 12, 4, p. 205-207

En population af Gøgeurt (Dactylorhiza) artsbestemt ved isozym-elektroforese Pedersen, H. Æ., 1997, In: URT. 21, 2, p. 43-47

The genus Dendrochilum (Orchidaceae) in the Philippines - a taxonomic revision Pedersen, H. Æ., 1997, In: Opera Botanica. 131, p. 1-205

To upåagtede forekomster af Dværgulvefod (Selaginella selaginoides) ved Tornby Pedersen, H. Æ., 1997, In: Flora og Fauna. 103, 1, p. 17-18

Blå Stregbælg (Galega orientalis) - naturaliseret Løjtnant, B. & Pedersen, H. Æ., 1996, In: Flora og Fauna. 102, 3, p. 191-193

Rams-Løg (Allium ursinum) - en indigen, spredningsaggresiv plante Pedersen, H. Æ. & Lange, C., 1996, In: URT. 20, 2, p. 46-51

UV-mønstre hos fem arter af Gøgeurt (Dactylorhiza) Løjtnant, B. & Pedersen, H. Æ., 1996, In: Flora og Fauna. 102, 4, p. 205-208

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