Georg Fresenius

German botanist (1808–1866).

Johann Baptist Georg Wolfgang Fresenius (25 September 1808 – 1 December 1866) was a German physician and botanist, known for his work in the field of phycology. He was a native of Frankfurt am Main. He studied medicine at the Universities of Heidelberg, Würzburg and Giessen, earning his doctorate at the latter institution in 1829. Afterwards he settled in Frankfurt am Main, where he worked as a general practitioner of medicine while maintaining an active interest in botany. As a student in Heidelberg and afterwards, he studied botany with his friend George Engelmann (1809-1884), who later beca

Abbreviations: Fresen.
Occupations: physician, mycologist, botanist
Citizenships: Free City of Frankfurt
Languages: German
Dates: 1808-09-25T00:00:00Z – 1866-12-01T00:00:00Z
Birth place: Frankfurt
Direct attributions: 54 plants, 36 fungi
Authorship mentions: 81 plants, 50 fungi

36 fungi attributed, 14 fungi contributed to50 fungi:

Aspergillus fumigatus Fresen. 1863
fungi species in the aspergillaceae family
Aspergillus fumigatus is a species of fungus in the genus Aspergillus, and is one of the most common Aspergillus species to cause disease in individuals with an immunodeficiency. Aspergillus fumigatus, a saprotroph widespread in nature, is typically found in soil and decaying organic matter, such as compost heaps, where it plays an essential role in carbon and nitrogen recycling. Colonies of the fungus produce from conidiophores; thousands of minute grey-green conidia (2–3 μm) which readily become airborne. For many years, A. fumigatus was thought to only reproduce asexually, as neither
Entomophthora muscae (Fly Death Fungi) (Cohn) Fresen. 1856
fungi species in the entomophthoraceae family
Entomophthora muscae is a species of pathogenic fungus in the order Entomophthorales which causes a fatal disease in flies. It can cause epizootic outbreaks of disease in houseflies and has been investigated as a potential biological control agent.
Entomophthora Fresen. 1856
fungi genus in the entomophthoraceae family
Entomophthora is a fungal genus in the family Entomophthoraceae. Species in this genus are parasitic on flies and other two-winged insects. The genus was circumscribed by German physician Johann Baptist Georg Wolfgang Fresenius (1808–1866) in 1856. This fungus is parasitic and undergoes a number of stages within its life cycle, these include: infection, incubation, sporulation and mummification. Within each stage, this pathogen invades the host's body cells, utilising the insect's nutrients allowing it to take control over the brain just before the host's death. Entomophthora reproduces
Mucor mucedo (Common Pinmould) Fresen. 1753
fungi species in the mucoraceae family
Mucor mucedo, commonly known as the common pinmould, is a fungal plant pathogen and member of the phylum Mucoromycota and the genus Mucor. Commonly found on soil, dung, water, plants and moist foods, Mucor mucedo is a saprotrophic fungus found world-wide with 85 known strains. It is often mistaken for Rhizopus rots on fruits (i.e. strawberries) due to similar mould growth shape and colour. Contrastingly, however, Mucor mucedo is found to grow on a wide range of stored grains and plants, including cucumber and tomato. Discovered in Italy in 1729 by P.A. Micheli and later noted by Carl Linnaeus
Mucor racemosus Fresen. 1791
fungi species in the mucoraceae family
Mucor racemosus is a rapidly growing, weedy mould belonging to the division Mucoromycota. It is one of the earliest fungi to be grown in pure culture and was first isolated in 1886. It has a worldwide distribution and colonizes many habitats such as vegetational products, soil and houses. The fungus is mostly known for its ability to exhibit both filamentous and yeast-like morphologies, often referred to as dimorphism. Stark differences are seen in both forms and conditions of the environment heavily affect the phases of the M. racemosus. Like many fungi, it also reproduces both sexually and
Chaetocladium Fresen. 1863
fungi genus in the mucoraceae family
Chaetocladium is a genus of fungi in the family Mucoraceae.
Cercospora apii (Fuckel) Fresen. 1863
fungi species in the mycosphaerellaceae family
Cercospora apii is a fungal plant pathogen, who causes leaf spot on celery, and found on other plants, including Impatiens. Since the genus Cercospora is one of the largest and most heterogeneous genera of hyphomycetes, numerous species described from diverse hosts and locations are morphologically indistinguishable from C. apii and subsequently are referred to as C. apii sensu lato.
Ramularia macrospora Fresen. 1863
fungi species in the mycosphaerellaceae family
Ramularia macrospora is a fungal plant pathogen infecting bellflowers.
Prosthecium Fresen. 1852
fungi genus in the melanconidaceae family
Prosthecium is a genus of fungi within the Melanconidaceae family.
Heydenia Fresen. 1852
fungi genus in the pyronemataceae family
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Entomophthora culicis (A. Braun) Fresen. 1858
fungi species in the entomophthoraceae family
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Botrytis aclada (Onion Neck Rot) Fresen. 1850
fungi species in the sclerotiniaceae family
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Spelaeomyces heydenii Fresen. 1863
fungi species in the fomitopsidaceae family
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Spelaeomyces Fresen. 1863
fungi genus in the fomitopsidaceae family
Daedalea is a genus of fungi in the family Fomitopsidaceae. The genus was circumscribed in 1801 by mycologist Christian Hendrik Persoon, based on the type D. quercina and four other species. The generic name is derived from the Ancient Greek δαιδαλεος ("curiously wrought").
Ramularia filaris Fresen. 1863
fungi species in the mycosphaerellaceae family
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Prosthecium ellipsosporum Fresen. 1852
fungi species in the melanconidaceae family
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Helminthosporium rhopaloides Fresen. 1852
fungi species in the massarinaceae family
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Entomophthora sphaerosperma Fresen. 1856
fungi species in the entomophthoraceae family
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Cercospora chenopodii Fresen. 1863
fungi species in the mycosphaerellaceae family
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Triglyphium album Fresen. 1852
fungi species
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Sphaeridium vitellinum Fresen. 1852
fungi species
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Riessia semiophora Fresen. 1852
fungi species
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Isariopsis Fresen. 1863
fungi genus in the mycosphaerellaceae family
Isariopsis is a genus of fungi in the family Mycosphaerellaceae. The plant disease called isariopsis leaf spot is actually caused by Pseudocercospora vitis, formerly known as I. vitis.
Heydenia alpina Fresen. 1852
fungi species in the pyronemataceae family
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Antromyces copridis Fresen. 1850
fungi species
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Triglyphium Fresen. 1852
fungi genus
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Amblyosporium botrytis Fresen. 1863
fungi species
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Amblyosporium Fresen. 1863
fungi genus
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Antromyces Fresen. 1850
fungi genus
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Sphaeridium Fresen. 1852
fungi genus
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