Augustin-Pyramus de Candolle

Swiss botanist (1778–1841).

Augustin Pyramus (or Pyrame) de Candolle (UK: , US: , French: [kɑ̃dɔl]; 4 February 1778 – 9 September 1841) was a Swiss botanist. René Louiche Desfontaines launched de Candolle's botanical career by recommending him at a herbarium. Within a couple of years de Candolle had established a new genus, and he went on to document hundreds of plant families and create a new natural plant classification system. Although de Candolle's main focus was botany, he also contributed to related fields such as phytogeography, agronomy, paleontology, medical botany, and economic botany. De Candolle originated th

Abbreviations: DC.

Occupations: zoologist, scientific collector, professor, botanist, naturalist, botanical collector

Citizenships: Republic of Geneva, Switzerland, France

Languages: French

Dates: 1778-02-04T00:00:00Z – 1841-09-09T00:00:00Z

Birth place: Geneva

Direct attributions: 4,795 plants, 113 fungi

Authorship mentions: 7,079 plants, 312 fungi

Links:Wikipedia IPNI VIAF BHL

113 fungi attributed, 199 fungi contributed to312 fungi:

Rhizocarpon geographicum (Yellow Map Lichen) (L.) DC. 1805

fungi species in the rhizocarpaceae family

Rhizocarpon geographicum (the map lichen) is a species of lichen, which grows on rocks in mountainous areas of low air pollution. Each lichen is a flat patch bordered by a black line of fungal hyphae. These patches grow adjacent to each other, leading to the appearance of a map or a patchwork field. When circular, or roughly circular, the diameter of this lichen species has been widely used to help determining the relative age of deposits, e.g. moraine systems, thus revealing evidence of glacial advances. The process is termed lichenometry.

Morchella semilibera (Semifree Morel) DC. 1805

edible fungi species in the morchellaceae family

Morchella semilibera, commonly called the half-free morel, is a species of fungus in the family Morchellaceae. It is native to Eurasia and is edible.

Erysiphe R. Hedw. ex DC. 1805

fungi genus in the erysiphaceae family

Erysiphe is a genus of plant pathogenic fungi in the family Erysiphaceae. The species in this genus are known for causing powdery mildew.

Gymnosporangium (Juniper Rust) R. Hedw. ex DC. 1805

fungi genus in the gymnosporangiaceae family

Gymnosporangium is a genus of heteroecious plant-pathogenic fungi which alternately infect members of the family Cupressaceae, primarily species in the genus Juniperus (junipers), and members of the family Rosaceae in the subfamily Amygdaloideae (apples, pears, quinces, shadbush, hawthorns, rowans and their relatives). The common name cedar-apple rusts has been used for these fungi. According to the Dictionary of the Fungi (10th edition, 2008), there were 57 species in the genus. In 2023, Species Fungorum lists up to 74 species. In junipers (the primary hosts, see photo), some species form a

Rhizoctonia DC. 1815

fungi genus in the ceratobasidiaceae family

Rhizoctonia is a genus of fungi in the family Ceratobasidiaceae. Species form thin, effused, corticioid basidiocarps (fruit bodies), but are most frequently found in their sterile, anamorph state. Rhizoctonia species are saprotrophic, but some are also facultative plant pathogens, causing commercially important crop diseases. Some are also endomycorrhizal associates of orchids. The genus name was formerly used to accommodate many superficially similar, but unrelated fungi. As of 2025, the synonymisation of several genera under a unified Rhizoctonia was formalised, and the genus now includes

Pertusaria (Pore Lichen) DC. 1805

fungi genus in the pertusariaceae family

Pertusaria is a large genus of warty crustose lichens in the Pertusariaceae family. The fruiting bodies are usually modified apothecia that immersed in warts on the main body (thallus) with small holes for the spores to emerge, similar to ostioles, or are fully above and lecanorine (spore bearing discs surrounded by a ring of tissue similar to the tissue of the thallus. Members of the genus are commonly called wart lichens. The widespread genus contains over 500 species. Classification in the large genus relies heavily on thallus chemistry to distinguish and classify species, some of which

Rhizocarpon (Map Lichen) Ramond ex DC. 1805

fungi genus in the rhizocarpaceae family

Rhizocarpon is a genus of crustose, saxicolous (or sometimes lichenicolous), lecideoid lichens in the family Rhizocarpaceae. The genus is common in arctic-alpine environments, but also occurs throughout temperate, subtropical, and even tropical regions. They are commonly known as map lichens because of the prothallus forming border-like bands between colonies in some species, like the common map lichen (Rhizocarpon geographicum).

Puccinia asparagi (Asparagus Rust) DC. 1805

fungi species in the pucciniaceae family

Puccinia asparagi is the causative agent of asparagus rust. It is an autoecious fungus, meaning that all stages of its life cycle – pycniospores, aeciospores, and teliospores – all develop upon the same host plant . Rust diseases are among the most destructive plant diseases, known to cause famine following destruction of grains, vegetables, and legumes. Asparagus rust occurs wherever the plant is grown and attacks asparagus plants during and after the cutting season. Asparagus spears are usually harvested before extensive rust symptoms appear. Symptoms are first noticeable on the growing

Gymnosporangium clavariiforme (Tongues Of Fire) (Wulfen) DC. 1805

fungi species in the gymnosporangiaceae family

Gymnosporangium clavariiforme (tongues of fire) is a species of rust fungus which alternately infects Juniperus and hawthorns. In junipers, the primary hosts, G. clavariiforme produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet. The spores are released and travel on the wind until they infect a hawthorn tree. On the secondary hosts, the fungus produces yellowish depressions on the leaves. It also infects the fruit, which grows whitish tubes like a Medusa head. These are the spore tubes. The spores must then

Roccella tinctoria (Roccella Lichen) DC. 1805

fungi species in the roccellaceae family

Roccella tinctoria is a lichenised species of fungus in the genus Roccella, homotypic synonym of Lecanora tinctoria (DC.) Czerwiak., 1849. It was first described by Augustin Pyramus de Candolle in 1805. It has the following varieties: R. t. var. portentosa R. t. var. subpodicellata R. t. var. tinctoria and formae: R. t. f. complanata R. t. f. tinctoria

Coniophora DC. 1815

fungi genus in the coniophoraceae family

Coniophora is a genus of fungi within the order Boletales. Basidiocarps (fruit bodies) are corticioid (patch-forming). There are 20 species in the genus, which has a widespread distribution. One notable member is the cellar fungus (C. puteana), which causes wet rot in wood. Molecular analysis has revealed that there are cryptic species in the fungal lineages Coniophora olivacea, C. arida, and C. puteana.

Roccella (Rocella) DC. 1805

fungi genus in the roccellaceae family

Roccella is a genus of 23 species of lichens in the family Roccellaceae. The genus was circumscribed by Swiss botanist Augustin Pyramus de Candolle in 1805, with Roccella fuciformis as the type species.

Puccinia bistortae (F. Strauss) DC. 1815

fungi species in the pucciniaceae family

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Physcia tenella (Fringed Rosette Lichen) (Scop.) DC. 1805

fungi species in the physciaceae family

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Erysiphe pisi (Pea Powdery Mildew) DC. 1805

fungi species in the erysiphaceae family

Erysiphe pisi is a plant pathogen that causes powdery mildew on several plant species.

Puccinia violae (Violet Rust) (Schumach.) DC. 1815

fungi species in the pucciniaceae family

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Puccinia tanaceti DC. 1805

fungi species in the pucciniaceae family

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Puccinia calcitrapae DC. 1805

fungi species in the pucciniaceae family

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Hypoderma rubi (Pers.) DC. 1805

fungi species in the rhytismataceae family

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Erysiphe heraclei (Umbellifer Mildew) DC. 1815

fungi species in the erysiphaceae family

Erysiphe heraclei is a species of powdery mildew in the family Erysiphaceae. It is found across the world, where it infects members of the family Apiaceae (umbellifers). It has also been recorded on Billardiera in Australia.

Erysiphe convolvuli (Bindweed Powdery Mildew) DC. 1805

fungi species in the erysiphaceae family

Erysiphe convolvuli is a species of powdery mildew in the family Erysiphaceae. It is found across the world, where it affects bindweeds (Calystegia and Convolvulus) and has been reported from morning-glory plants (Ipomoea).

Roccella fuciformis (Orchil) (L.) DC. 1805

fungi species in the roccellaceae family

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Puccinia ribis (Downy Currant Rust) DC. 1805

fungi species in the pucciniaceae family

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Puccinia glechomatis (Ground Ivy Rust) DC. 1808

fungi species in the pucciniaceae family

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Puccinia caricina (Cluster Cup Rust) DC. 1815

fungi species in the pucciniaceae family

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Puccinia betonicae (Betony Rust) (Alb. & Schwein.) DC. 1815

fungi species in the pucciniaceae family

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Geastrum striatum (Striate Earthstar) DC. 1805

fungi species in the geastraceae family

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Asteroma DC. 1815

fungi genus in the gnomoniaceae family

Asteroma is a genus of pathogenic fungus in the family Gnomoniaceae, containing several species that cause leaf spot and canker on plants such as goldenrod, primrose, and Erythronium.

Verrucaria macrostoma (Wart Lichen) DC. 1805

fungi species in the verrucariaceae family

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Umbilicaria leiocarpa (Textured Rocktripe Lichen) DC. 1805

fungi species in the umbilicariaceae family

Umbilicaria leiocarpa, commonly known as textured rock tripe, is a species of saxicolous (rock-dwelling), umbilicate lichen in the family Umbilicariaceae. First described by Augustin Pyramus de Candolle in 1805, it is characterised by its small to medium-sized grey thallus with a cracked upper surface and smooth reproductive structures. The species has a primarily Holarctic distribution, being found across Europe from Fennoscandia to the Pyrenees, with populations occurring from sea level to alpine elevations around 2,000 m (6,600 ft). It shows a particular preference for siliceous rock

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