Richard Spruce was an English botanist specializing in bryology. One of the great Victorian botanical explorers, Spruce spent 15 years exploring the Amazon from the Andes to its mouth, and was one of the very first Europeans to observe many of the places where he collected specimens. Spruce discovered and named a number of new plant species, and corresponded with some of the leading botanists of the nineteenth century.
Johann Müller was a Swiss botanist who was a specialist in lichens. He published under the name Johannes Müller Argoviensis to distinguish himself from other naturalists with similar names.
William Starling Sullivant was an early American botanist recognized as the foremost authority on bryophytes in the United States.
Peter MacOwan was a British colonial botanist and teacher in South Africa.
Dmitry Ivanovich Litvinov was a Russian botanist responsible for the naming of a large variety of East European and Asian plants. He is known as the author of the concept of glacial refugia for the plants growing on chalk and limestone slopes of the banks of rivers in the European part of Russia. Together with Vasily Zinger, he discovered the natural monument Galichya Gora in Central Russia inhabited by relict plants.
Franz Wilhelm Sieber, was a botanist and collector who travelled to Europe, the Middle East, Southern Africa and Australia.
William Baxter ALS, FHS, was a British botanist, author of British Phaenogamous Botany and appointed curator of the Oxford Botanic Garden in 1813. From 1825 to 1828 he edited the exsiccata series Stirpes cryptogamae Oxonienses, or dried specimens of cryptogamous plants collected in the vicinity of Oxford. With Philip Burnard Ayres he distributed another exsiccata under the title Flora Thamnensis.
Philip Burnard Ayres (1813–1863) was a British physician, botanist and plant collector. He was born at Thame in Oxfordshire on 12 December 1813. He initially began to collect plants in his native United Kingdom and also in France. Between 1841 and 1845 he issued three exsiccata-like series, among them Mycologia Britannica or specimens of British fungi and with William Baxter another exsiccata under the title Flora Thamnensis. In 1856 Ayres was appointed by Queen Victoria to superintendency of quarantine on Flat Island, Mauritius under governor Robert Townsend Farquhar. Ayres is particularly well known for his extensive plant collections made while in this position. He is also credited for finding the first sub fossil remains of the dodo in 1860. From 1856 to 1863 he traveled through Madagascar, the Seychelles, and the Mascarenes to develop this rich collection of Indian Ocean plant specimens. These specimens are now in the herbaria collections of the Natural History Museum, London, the Royal Botanic Garden Edinburgh, the Royal Botanic Gardens, Kew, the Missouri Botanical Garden and the Muséum National d'Histoire Naturelle, Paris. In addition to collecting, Ayres catalogued and sketched the plants in the wild, as was common among nineteenth century naturalists. He also planned to write a book about the flora of Mauritius, but he died from relapsing fever in his home in Port Louis on 30 April 1863 before the flora could be accomplished. Ayres' wife Harriet collected his written records and bequeathed them to the Royal Botanic Gardens, Kew.
Friedrich Wilhelm Schultz was a German pharmacist and botanist who was a native of Zweibrücken.
John Bernhard Leiberg was a Swedish-American botanical explorer, forester, and bryologist. He was a self-taught naturalist who worked in the northwestern United States.
Unio Itineraria was a German scientific society which was based at Esslingen am Neckar in Baden-Württemberg, Germany. The organisation paid botanists to travel and collect plants, and sold the collections in large sets which often resemble exsiccatae. The fourteen series with the title Unio itineraria are listed and described with bibliographic data in IndExs – Index of Exsiccatae. Rising costs associated with the Wilhelm Schimper expeditions led to the collapse of Unio Itineraria in 1842. Significant portions of the Unio Itineraria collections were directed to Herbarium Tubingense at the University of Tübingen in Baden-Württemberg
George Gardner was a Scottish biologist mainly interested in botany.
Rev. William Richardson Linton, Corpus Christi College, M.A., was an English botanist and vicar of the parish of Shirley, Derbyshire. He was regarded as one of the leading batologists of his day.
Pierre Marie Édouard Lamy de la Chapelle was a French botanist, and notably a bryologist.
Ernst Heinrich Georg Ule was a German botanist and plant collector.
Coe Finch Austin was an educator, botanist and founding member of the Torrey Botanical Club. He was an expert on the mosses and liverworts of North America.
William M. Wilson (1799–1871) was an English botanist, known for his focus on bryology.
David Nathaniel Friedrich Dietrich was German botanist and gardener.
Richard Paget Murray was an English clergyman, botanist and lepidopterist.
Exsiccata is a work with "published, uniform, numbered set[s] of preserved specimens distributed with printed labels". Typically, exsiccatae are numbered collections of dried herbarium specimens or preserved biological samples published in several duplicate sets with a common theme or title, such as Lichenes Helvetici. Exsiccatae are regarded as scientific contributions of the editor(s) with characteristics from the library world and features from the herbarium world. Exsiccatae works represent a special method of scholarly communication. The text in the printed matters/published booklets is basically a list of labels (schedae) with information on each single numbered exsiccatal unit. Extensions of the concept occur.
