Alessandro "Sandro" Pignatti (born 28 September 1930) is an Italian botanist specialising in pteridophytes and spermatophytes. [1] The Australian plant species Calectasia pignattiana was named after him. On 31 May 1991 Pignatti received an honorary doctorate from the Faculty of Mathematics and Science at Uppsala University, Sweden. [2] He is an Honorary Member of the International Association for Vegetation Science (1997). [3]
The specific epithet of the Western Australian plant species, Calectasia pignattiana honoured "Professors Erika and Alessandro Pignatti of Rome on the occasion of their seventieth birthdays". [4]
Elias Magnus Fries was a Swedish mycologist and botanist. He is sometimes called the "Linnaeus of Mycology". In his works he described and assigned botanical names to hundreds of fungus and lichen species, many of which remain authoritative today.
AndersDahl was a Swedish botanist and student of Carl Linnaeus. The dahlia flower is named after him.
Jonas Carlsson Dryander was a Swedish botanist.
Georg (Göran) Wahlenberg was a Swedish naturalist. He was born in Kroppa, Värmland County.
Adam Afzelius was a Swedish botanist and an apostle of Carl Linnaeus. Afzelius was born at Larv in Västergötland in 1750. He was appointed teacher of oriental languages at Uppsala University in 1777, and in 1785 demonstrator of botany. In 1793 he was elected a member of the Royal Swedish Academy of Sciences. In 1800, Adam Afzelius became member of the German Academy of Sciences Leopoldina.
Carl Johan Fredrik Skottsberg was a Swedish botanist and explorer of Antarctica.
Pehr Osbeck was a Swedish explorer, naturalist and an apostle of Carl Linnaeus. He was born in the parish of Hålanda on Västergötland and studied at Uppsala with Carolus Linnaeus.
Alexander Segger George is an Australian botanist. He is the authority on the plant genera Banksia and Dryandra. The "bizarre" Restionaceae genus Alexgeorgea was named in his honour in 1976.
Ernst Jakob Lennart von Post was a Swedish naturalist and geologist. He was the first to publish quantitative analysis of pollen and is counted as one of the founders of palynology. He was a professor at Stockholm University 1929–1950.
Olof Peter Swartz was a Swedish botanist and taxonomist. He is best known for his taxonomic work and studies into pteridophytes.
Göte Wilhelm Turesson was a Swedish evolutionary botanist who made significant contributions to ecological genetics, and coined the terms ecotype and agamospecies. He conducted extensive work to demonstrate that there is a genetic basis to the differentiation of plant populations. This work stood in sharp contrast to most researchers at the time, who believed that the differentiation of plant populations was due to phenotypic plasticity. Further, Turesson came to the conclusion that differentiation of plant populations was largely driven by natural selection. His work on locally adapted plant populations led him to coin the term "ecotype" in 1922.
Michael Grätzel is a professor at the École Polytechnique Fédérale de Lausanne where he directs the Laboratory of Photonics and Interfaces. He pioneered research on energy and electron transfer reactions in mesoscopic-materials and their optoelectronic applications. He co-invented with Brian O'Regan the Grätzel cell in 1988.
Professor Dianne Edwards CBE, FRS, FRSE, FLS, FLSW is a palaeobotanist, who studies the colonisation of land by plants, and early land plant interactions.
Johan Erhard Areschoug was a Swedish botanist who was a native of Göteborg. He was a member of the Arreskow family. His first name is sometimes recorded as "John".
Knut Fægri was a Norwegian botanist and palaeoecologist.
Anders Fredrik Regnell was a Swedish physician and botanist. He studied in Uppsala and received his medical doctorate in 1837. As a student he served as assistant to Anders Retzius in Stockholm. He served in various capacities at the Serafimerlasarettet in Stockholm, and participated as ship surgeon aboard the corvette "Jarramas” on its expedition in the Mediterranean Sea during 1839–40.
John-Axel Nannfeldt, born 18 January 1904 in Trelleborg and deceased 4 November 1985 in Uppsala, was a Swedish botanist and mycologist.
Kåre Bremer is a Swedish botanist and academic. He has also been Vice-Chancellor of Stockholm University.
Calectasia pignattiana, commonly known as the stilted tinsel lily or Pignatti's star of Bethlehem, is a plant in the family Dasypogonaceae growing as a perennial herb and is endemic to the south–west of Western Australia. It is only known from ten locations, four of which are on road verges. The species is classified as vulnerable.
Kornelia Smalla is a chemist and biotechnologist at the Julius Kuehn Institute (JKI) in Braunschweig and a university lecturer in microbiology at the Technical University of Braunschweig.