Harrie Sipman

Henricus (Harrie) Johannes Maria Sipman (born 1945) is a retired Dutch lichenologist who specialised in tropical and subtropical lichens and authored or co-authored over 250 scientific publications. He was the curator of the lichen herbarium at the Berlin Botanical Garden and Botanical Museum from 1983 until his retirement in 2010.

Academia
Sipman was born in 1945 in Sittard, Netherlands. He attended Utrecht University, where he studied botany. He was appointed to the Herbarium and the Institute for Systematic Botany from 1972 to 1982, where his focus was on lichenology and bryology. During this time, some of his research publications dealt with taxa from the lichen genera Cladonia and Stereocaulon, and on the Musci Anisothecium staphylinum, Campylopus and Ephemerum. His supervisor was Robbert Gradstein (nl). He earned his PhD in 1983 after defending a thesis on the family Megalosporaceae, later published as a monograph in the Bibliotheca Lichenologica series. Afterwards he started a long career as curator of lichens in the Berlin Botanical Garden and Botanical Museum. Frequent collaborators include André Aptroot, Teuvo Ahti, Paul Diederich, Mark Seaward, Emmanuël Sérusiaux and Richard Harris. Many of his publications deal with lichen floras of tropical and subtropical countries such as Colombia, Costa Rica, Guiana and New Guinea.

Recognition
A Festschrift was dedicated to his honour in 2009, on the occasion of his 64th birthday and impending retirement. The volume includes 29 peer-reviewed contributions of various aspects of lichenology written by 50 of his colleagues. It also has a biography, a list of his scientific publications and a list of new taxa he introduced (9 genera and 213 species).

Eponymy
Three genera are named after Sipman:
 * Heiomasia Nelsen, Lücking & Rivas Plata (2010) (family Graphidaceae) – combines the letters Henricus Ioannes Marius Sipman
 * Sipmania Egea & Torrente (1994) (family Roccellaceae)
 * Sipmaniella Kalb (2009) (family Megalosporaceae).

Many species have been named in Sipman's honour. These eponyms include: Leproloma sipmanianum Kümmerl. & Leuckert (1991); Phacopsis falcispora var. sipmanii Diederich & Triebel (1995); Xanthoparmelia sipmanii T.H.Nash & Elix (1995); Opegrapha sipmanii Matzer (1996); Relicina sipmanii Elix (1996); Rinodina sipmanii Aptroot (1997); Sporopodiopsis sipmanii Sérus. (1997); Pertusaria sipmanii A.W.Archer & Elix (1998); Trichothelium sipmanii Lücking (1998); Bulbothrix sipmanii Aptroot & Aubel (1999); Parmotrema sipmanii Louwhoff & Elix (1999); Cladonia sipmanii Ahti (2000); Lecania sipmanii van den Boom & Zedda (2000); Diorygma sipmanii Kalb, Staiger & Elix (2004); Enterographa sipmanii Sparrius (2004); Imshaugia sipmanii Elix (2004); Tricharia sipmanii Lücking (2008); Xanthoria sipmanii S.Y.Kondr. & Kärnefelt (2008); Bacidia sipmanii M.Brand, Coppins, van den Boom & Sérus. (2009); Buellia sipmanii Bungartz & V.Wirth (2009); Caloplaca sipmanii S.Y.Kondr., Kärnefelt, Elix & Vondrák (2009); Chapsa sipmanii Frisch & Kalb (2009); Herpothallon sipmanii Aptroot, Lücking & Rivas Plata (2009); Micarea sipmanii Sérus. & Coppins (2009); Pyrenula sipmanii Aptroot & K.H.Moon (2009); Synarthothelium sipmanianum Sparrius (2009); Zwackhiomyces sipmanii Diederich & Zhurb. (2009); Lobariella sipmanii B.Moncada, Betanc. & Lücking (2011); Remototrachyna sipmaniana Kukwa & Flakus (2012); Astrochapsa sipmanii Weerakoon & Lücking (2015); Sclerococcum sipmanii Diederich (2015); Astrothelium sipmanii Aptroot (2016); Endococcus sipmanii Etayo (2017); Pygmaeosphaera sipmaniana Etayo (2017); Rhizocarpon sipmanianum Kalb & Aptroot (2017); and Carbacanthographis sipmaniana Feuerstein & Lücking (2022).

Selected publications
A complete list of publications (up to 2008) is given by Aptroot in the 2009 Festschrift. Some of Sipman's work includes the following:
 * Sipman, H. J. M. 2005: Líquenes de los Páramos de Costa Rica. Pp. 242-360 in: M. Kappelle & S. Horn (Eds.), Páramos de Costa Rica. 786 pp.
 * Seaward, M.R.D., Sipman, H.J.M. & Sohrabi, M. 2008: A revised checklist of lichenized, lichenicolous and allied fungi for Iran. In: Türk, R., John, V. & Hauck, M. (eds). Facetten der Flechtenforschung. Festschrift zu Ehren von Volkmar Wirth. Sauteria 15: 459 –520.
 * Sipman, H. J. M. 2005: Líquenes de los Páramos de Costa Rica. Pp. 242-360 in: M. Kappelle & S. Horn (Eds.), Páramos de Costa Rica. 786 pp.
 * Seaward, M.R.D., Sipman, H.J.M. & Sohrabi, M. 2008: A revised checklist of lichenized, lichenicolous and allied fungi for Iran. In: Türk, R., John, V. & Hauck, M. (eds). Facetten der Flechtenforschung. Festschrift zu Ehren von Volkmar Wirth. Sauteria 15: 459 –520.
 * Sipman, H. J. M. 2005: Líquenes de los Páramos de Costa Rica. Pp. 242-360 in: M. Kappelle & S. Horn (Eds.), Páramos de Costa Rica. 786 pp.
 * Seaward, M.R.D., Sipman, H.J.M. & Sohrabi, M. 2008: A revised checklist of lichenized, lichenicolous and allied fungi for Iran. In: Türk, R., John, V. & Hauck, M. (eds). Facetten der Flechtenforschung. Festschrift zu Ehren von Volkmar Wirth. Sauteria 15: 459 –520.