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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 Dendrochilum (). 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 (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 ' 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 ' (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, ), (the Mascarenes, Tunisia) and 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 ' 2005', Chios, 2005. Member of the editorial advisory committee of the journal 'Rheedea', 2006–2008. Subject editor of Asian vascular 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, Henrik Ærenlund, 2021, In: URT. 45, 2, p. 26-29

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

A new species of Dendrobium (Orchidaceae: : Malaxideae) described from previously perplexing specimens of the Seidenfaden collection Phueakkhlai, O., Suddee, S., Hodkinson, T. R., Sungkaew, S. & Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 2019, In: Phytotaxa. 421, 1, p. 1-65

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

Field guide to the orchids of Europe and the Mediterranean Kühn, R., Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund, Merckx, V. S. F. T., Zervas, A., Seberg, Ole & 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, Henrik Ærenlund, Phueakkhlai, O., Suddee, S., Sungkaew, S. & Traiperm, P., 2019, In: Thai Forest Bulletin (Botany). 47, 2, p. 152-158

Pollination-system diversity in (Orchidaceae): new insights from studies of E. flava in Thailand Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, Find, J. I., Petersen, Gitte & Seberg, Ole, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund & 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., , S. W., Pedersen, Henrik Ærenlund, 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, Gitte, Zervas, A., Pedersen, Henrik Ærenlund & Seberg, Ole, 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, Henrik Ærenlund, Petersen, Gitte, Watthana, S., Seberg, Ole, 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, Henrik Ærenlund, Nov 2017, In: Phytochemical Analysis. 28, 6, p. 575-583 9 p.

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

Een orchidé - mange kunstneriske udtryk Løjtnant, B. & Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 2016, In: Thai Forest Bulletin (Botany). 44, 1, p. 35-44 10 p.

Plastid DNA microsatellite data do not support recognition of subspecies in viride (L.) Hartm. (Orchidaceae) in northern Europe Hedrén, M. & Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 2015, In: URT. 39, 1, p. 26-31 6 p.

Orkidéernes ambassadør Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, Enghoff, Henrik, 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., 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 Necker ex Nevski (Orchidaceae) and allied genera Gamarra, R., Galán, P., Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund & 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, Henrik Ærenlund & 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, Henrik Ærenlund & 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, Henrik Ærenlund & 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, Henrik Ærenlund & Sridith, K., 2014, In: Plant Systematics and Evolution. 300, 4, p. 585-594 10 p.

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

Niels Faurholdt † (01.04.1947 - 19.04.2014) Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, Kurzweil, H., Suddee, S., de , 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, Henrik Ærenlund, 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, Ulla Lund, Walldén, A. M., Glastrup, J., Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund & 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, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund & 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, Henrik Ærenlund, 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, Henrik Ærenlund & Watthana, S., 2013, In: Taiwania. 58, 3, p. 163-170 8 p.

Five species of Liparis (Orchidaceae) newly recorded for Thailand Tetsana, N., Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund & 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, Henrik Ærenlund, Hodkinson, T. R., Balslev, H., van Welzen, P. C., Simpson, D., Middleton, D. J., Esser, H., 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, Henrik Ærenlund, 2013, In: Thai Forest Bulletin (Botany). 41, p. 145-156 12 p.

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

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

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

Overraskende nyt fund af Burreskærm (Turgenia latifolia) Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund & Ståhlberg, D., Jun 2012, In: Nordic Journal of Botany. 30, 3, p. 257-272 16 p.

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

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

Genetic diversity, compatibility patterns and quality in isolated populations of (Orchidaceae) Pedersen, Henrik Ærenlund, Rasmussen, Hanne Nina, Kahandawala, I. M. & Fay, M. F., 2012, In: Conservation Genetics. 13, 1, p. 89-98 10 p.

Orkidefamilien, Orchidaceae Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund & Friis, Ib, 2011, In: Taxon. 60, 5, p. 1521-1522

Brachycorythis neglecta newly recorded for China and Laos Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 2011, In: Taiwania. 56, 1, p. 37-41 5 p.

Cypripedium calceolus in situ: seed longevity, and dormancy breakage by long incubation and cold winters Rasmussen, Hanne Nina & Pedersen, Henrik Ærenlund, 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 , J. B. & Pedersen, Henrik Ærenlund, 2011, In: European Distributed Institute of Taxonomy. Newsletter. 25, p. 31- 32 2 p.

Lectotypification of the name Epipactis leptochila (Orchidaceae) Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 2011, In: Journal Europäischer Orchideen. 43, p. 79-84

Orchidaceae 1 (Cypripedioideae, Orchidoideae, Vanilloideae) Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund & 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, Henrik Ærenlund, 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, Henrik Ærenlund & Sayers, B., 2010, In: Taxon. 59, 3, p. 977-978 2 p.

Alfred Hansen, 1925-2008 Friis, Ib & Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 2010, In: Natur og Miljoe (Copenhagen). 2, p. 26-29 4 p.

Danmarks vilde orkidéer Pedersen, Henrik Ærenlund & Faurholdt, N., 2010, København: Gyldendal. 289 p.

Floristiske meddelelser fra Dansk Herbarium, VIII. Noter om Priklæbet Gøgeurt og Baltisk Gøgeurt Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 2010, In: Journal Europäischer Orchideen. 42, 1, p. 83-110 28 p.

Georges Bronckart's collections and drawings of Vietnam orchids Billiet, F., Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund, 2010, Diversity, phylogeny, and evolution in the : 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, Henrik Ærenlund & 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, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, Watthana, S., Roy, M., Suddee, S. & Selosse, M., 2009, In: Nordic Journal of Botany. 27, p. 460-468

Apochromic populations of s.l. (Orchidaceae): diversity and systematic significance as revealed by allozyme markers and morphology Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, Watthana, S. & Srimuang, K., 2009, In: Thai Forest Bulletin (Botany). special issue, p. 156- 168

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

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

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

Alfred Hansen: 2. oktober 1925 - 29. januar 2008 Friis, Ib, Wind, P. & Pedersen, Henrik Ærenlund, 2008, In: URT. 2, p. 68-72

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

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

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

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

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

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

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

Hotspots of narrow endemism: adequate focal points for conservation in Dendrochilum (Orchidaceae) Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund & 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, Henrik Ærenlund, 2007, In: Journal Europäischer Orchideen. 39, p. 341-366

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

Orkidefamilien, Orchidaceae; Blærerodfamilien, Lentibulariaceae Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund & Suddee, S., 2006, In: Selbyana. 27, p. 165-174

Systematics and evolution of the Dactylorhiza romana/ sambucina polyploid complex (Orchidaceae) Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund & Reinhardt, J., 2005, In: Taxon. 54, 3, p. 836-837

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

Breeding system, post-pollination growth, and seed dispersal in Gastrodia exilis (Orchidaceae) Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 2005, In: Oasis. Supplement 4, p. 2-9

Two new combinations in Ophrys (Orchidaceae) Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund, 2004, In: Nordic Journal of Botany. 22, 6, p. 641-658

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

Conflicting classifications of Nordic polymorphic orchids: a critical assessment Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, 2004, In: URT. 28, 1, p. 19-25

The Seidenfaden orchid collections in Copenhagen - their origin, arrangement and utilization Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund, Hedrén, M. & Bateman, R. M., 2003, In: Taxon. 3, p. 633-634

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

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

Sirindhornia, a new orchid genus from Southeast Asia Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 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, Henrik Ærenlund & 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, Henrik Ærenlund, 2002, In: Flora og Fauna. 108, 3, p. 57-64

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

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

Nikkende Hullæbe - økologi og fremtidsudsigter i Danmark Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 2001, In: Lindleyana. 16, p. 231-234

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

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

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

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

Local evolution of obligate autogamy in Epipactis helleborine subsp. neerlandica (Orchidaceae) Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund, 2000, In: Taxon. 49, p. 539-544

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

Botaniske lokaliteter og de rød- og gullistede karplanter ved Møns Klint Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund, 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, Henrik Ærenlund, 1999, In: URT. 23, 4, p. 133-140

Landplanter i Øresundsområdet Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund, 1999, In: Flora og Fauna. 105, 2, p. 29-36

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

Nikkende Hullæbe (Epipactis phyllanthes) - en miskendt dansk orkidé Faurholdt, N., Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund, 1998, In: Flora og Fauna. 104, 1, p. 17-21

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

Århusskovenes flora: En undersøgelse af karplantefloraens diversitet, autenticitet og beskyttelsesbehov Pedersen, Henrik Ærenlund & 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, Henrik Ærenlund & Faurholdt, N., 1997, In: Flora Mediterranea. 7, p. 153-162

A revised subdivision and bibliographical survey of Dendrochilum (Orchidaceae) Pedersen, Henrik Ærenlund, 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, Henrik Ærenlund & Faurholdt, N., 1997, In: Flora og Fauna. 103, 4, p. 95-105

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

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

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

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

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

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

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

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

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