Harrie Sipman
Henricus (Harrie) Johannes Maria Sipman (born 1945) is a Dutch lichenologist. He specialises in tropical and subtropical lichens, and has authored or co-authored more than 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. Life and career. Sipman was born in 1945 in Sittard, Netherlands. He attended Utrecht University, where he studied botany. Sipman 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 . 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 64th birthday, and his 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 introduced by him (at the time of compilation, it was nine genera and 213 species). Eponymy. Three genera are named after Sipman: Many species have been named to honour Harrie Sipman. These eponyms include: "Leproloma sipmanianum" ; "Phacopsis falcispora  var. sipmanii" ; "Xanthoparmelia sipmanii" ; "Opegrapha sipmanii" ; "Relicina sipmanii" ; "Rinodina sipmanii" ; "Sporopodiopsis sipmanii" ; "Pertusaria sipmanii" ; "Trichothelium sipmanii" ; "Bulbothrix sipmanii" ; "Parmotrema sipmanii" ; "Cladonia sipmanii" ; "Lecania sipmanii" ; "Diorygma sipmanii" ; "Enterographa sipmanii" ; "Imshaugia sipmanii" ; "Tricharia sipmanii" ; "Xanthoria sipmanii" ; "Bacidia sipmanii" ; "Buellia sipmanii" ; "Caloplaca sipmanii" ; "Chapsa sipmanii" ; "Herpothallon sipmanii" ; "Micarea sipmanii" ; "Pyrenula sipmanii" ; "Synarthothelium sipmanianum" ; "Zwackhiomyces sipmanii" ; "Lobariella sipmanii" ; "Remototrachyna sipmaniana" ; "Astrochapsa sipmanii" ; "Sclerococcum sipmanii" ; "Astrothelium sipmanii" ; "Endococcus sipmanii" ; "Pygmaeosphaera sipmaniana" ; "Rhizocarpon sipmanianum" ; and "Carbacanthographis sipmaniana" . 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: