Roger Jean Heim

French botanist (1900–1979).

Roger Heim (February 12, 1900 – September 17, 1979) was a French botanist specialising in mycology and tropical phytopathology. He was known for his studies describing the anatomy of the mushroom hymenium, the systematics and phylogeny of higher fungi (especially the related genera Lactarius and Russula, the Russulales and Secotium), the mycology of tropical fungi such as Termitomyces, as well as ethnomycological work on hallucinogenic fungi, like Psilocybe and Stropharia. In his career, he published over 560 articles, scientific reviews, and major works in fields like botany, chemistry, educa

Abbreviations: R.Heim

Occupations: phytopathologist, mycologist, lichenologist, botanist, botanical collector, university teacher, French resistance fighter

Citizenships: France

Languages: French

Dates: 1900-02-12T00:00:00Z – 1979-09-17T00:00:00Z

Birth place: 16th arrondissement of Paris

Direct attributions: 0 plants, 221 fungi

Authorship mentions: 0 plants, 290 fungi

Links:Wikipedia IPNI VIAF BHL

221 fungi attributed, 69 fungi contributed to290 fungi:

Psilocybe mexicana R. Heim 1957

fungi species in the hymenogastraceae family

Psilocybe mexicana is a psychedelic mushroom. Its first known usage was by the natives of North and Central America over 2,000 years ago. Known to the Aztecs as teonanácatl, from the Nahuatl teotl ("god") + nanácatl ("fungus"). This species was categorized by French botanist Roger Heim. It was from this species that Dr. Albert Hofmann, working with specimens grown in his Sandoz laboratory, first isolated and named the active psychedelic compounds psilocybin and psilocin. Uncertain of whether or not the artificially cultivated mushrooms would retain their natural psychoactive properties, Dr.

Lactarius salmonicolor (Salmon Milkcap) R. Heim & Leclair 1953

edible fungi species in the russulaceae family

Lactarius salmonicolor is a species of fungus in the family Russulaceae. It is native to Europe and North America. It has some culinary uses in parts of Europe.

Termitomyces (Termiteshrooms) R. Heim 1942

fungi genus in the lyophyllaceae family

Termitomyces is a genus of basidiomycete fungi known as termite mushrooms in Lyophyllaceae family farmed by fungus-growing termites. The fungi and the termites interdepend to live, as the termites house and culture the fungi, and the fungi in turn provide foods for the termites. Often after a raining, the fungi grow mushrooms, which are edible and highly regarded for their flavor.

Lactarius semisanguifluus R. Heim & Leclair 1950

fungi species in the russulaceae family

Lactarius semisanguifluus is a species of fungus in the family Russulaceae.

Psilocybe aztecorum R. Heim 1957

fungi species in the hymenogastraceae family

Psilocybe aztecorum is a species of psilocybin mushroom in the family Hymenogastraceae. Known only from central Mexico, the fungus grows on decomposing woody debris and is found in mountainous areas at elevations of 2,000 to 4,000 m (6,600 to 13,100 ft), typically in meadows or open, grassy conifer forests. The mushrooms have convex to bell-shaped caps 1.5–2 cm (0.6–0.8 in) in diameter, atop slender cylindrical stems that are up to 7.5 cm (3.0 in) long. The color of the caps changes with variations in hydration, ranging from dark chestnut brown to straw yellow or whitish when dry. The base of

Favolaschia calocera (Orange Poreconch) R. Heim 1966

fungi species in the mycenaceae family

Favolaschia calocera, commonly known as the orange pore fungus, is a species of fungus in the family Mycenaceae. Due to its form it is also known as orange pore conch or orange Ping-Pong bat. Throughout much of its expanded range F. calocera is now considered an invasive species. It colonizes ruderal sites along transport routes and can become dominant in habitats disturbed by human activity. Mycologists fear that it may be displacing native fungi species as it spreads through the paleotropics.

Phaeocollybia R. Heim 1931

fungi genus in the hymenogastraceae family

Phaeocollybia is a genus of fungi in the family Hymenogastraceae. They are characterized by producing fruit bodies (mushrooms) with umbonate caps and rough brown spores. The genus is widely distributed (especially in temperate regions). As of January 2026, the genus contained about 90 species. They are known for a long stipe which continues down into the ground, known as a rooting stipe or pseudorhiza formed as the fruitbody grows up from the subterranean colonized roots well below the organic soil layer. The genus is primarily mycorrhizal but may also be somewhat parasitic on forest trees.

Amanita ponderosa (Heavy Amidella) Malençon & R. Heim 1944

fungi species in the amanitaceae family

Amanita ponderosa, also known as heavy amidella or gurumelo in Spanish, is a mushroom-forming fungus in the family Amanitaceae.

Termitomyces schimperi (Omajowa) (Pat.) R. Heim 1942

fungi species in the lyophyllaceae family

Termitomyces schimperi is a large mushroom associated with the termite species Macrotermes michaelseni. It grows in the northern part of Southern Africa, from northern Namibia up to Democratic Republic of Congo (DRC), eastwards to Malawi and Mozambique, and westwards to Ivory Coast. In Namibia it is commonly referred to by its Herero name Ejova (singular)/ Omajowa (plural). German Namibians refer to the mushroom as "Termitenpilz."

Phaeocollybia lugubris (Russet Rootshank) (Fr.) R. Heim 1931

fungi species in the hymenogastraceae family

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Termitomyces microcarpus (Berk. & Broome) R. Heim 1942

edible fungi species in the lyophyllaceae family

Termitomyces microcarpus is a species of agaric fungus in the family Lyophyllaceae. An edible species, it is found in Africa and Asia, where it grows in groups or clusters in deciduous forests near the roots of bamboo stumps associated with termite nests.

Psilocybe zapotecorum (Drunken Mushroom) R. Heim 1957

fungi species in the hymenogastraceae family

Psilocybe zapotecorum is a psilocybin mushroom which has psilocybin and psilocin as main active compounds. It is in the section Zapotecorum.

Phaeocollybia christinae (Christina's Rootshank) (Fr.) R. Heim 1931

fungi species in the hymenogastraceae family

Phaeocollybia christinae, commonly known as Christina's rootshank, is a species of fungus in the family Cortinariaceae. Found in the woodlands of Europe and eastern North America, it typically grows in sandy soil near conifer trees, especially spruce. The fruit bodies are characterized by a brownish cap with a pointed umbo, and a long stem that extends deeply into the soil.

Hygrophorus poetarum R. Heim 1948

edible fungi species in the hygrophoraceae family

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Hebeloma dunense L. Corb. & R. Heim 1929

fungi species in the hymenogastraceae family

Hebeloma dunense is a species of agaric fungus in the family Hymenogastraceae.

Lactarius acutus R. Heim 1955

fungi species in the russulaceae family

Lactarius acutus is a member of the large milk-cap genus Lactarius in the order Russulales. Found in Guinea, the species was described in 1955 by French botanist Roger Heim.

Asproinocybe R. Heim 1970

fungi genus in the tricholomataceae family

Asproinocybe is a genus of fungi in the family Tricholomataceae. The genus contains five species found in tropical Africa.

Tubariopsis torquipes R. Heim 1931

fungi species in the bolbitiaceae family

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Phaeocollybia festiva (Fr.) R. Heim 1944

fungi species in the hymenogastraceae family

Phaeocollybia festiva is a species of fungus in the family Cortinariaceae.

Lactarius adhaerens R. Heim 1938

fungi species in the russulaceae family

Lactarius adhaerens is a member of the large milk-cap genus Lactarius in the order Russulales. It is found in Madagascar, where it grows on decayed wood. The species was first described in 1938 by French botanist Roger Heim.

Inocybe splendens R. Heim 1932

fungi species in the inocybaceae family

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Termitomyces eurhizus (Termitomyces Eurrhizus) (Berk.) R. Heim 1942

fungi species in the lyophyllaceae family

Termitomyces eurrhizus species of agaric fungus in the family Lyophyllaceae native to Pakistan, India, Sri Lanka, Burma, southwestern China and Malaysia. The fungus has a symbiotic relationship with termites, its mushrooms growing out of mounds after periods of rainfall. It is eaten in Malaysia and the Indian subcontinent.

Termitomyces clypeatus R. Heim 1951

edible fungi species in the lyophyllaceae family

Termitomyces clypeatus species of agaric fungus in the family Lyophyllaceae. Found in Africa, it was formally described by Roger Heim in 1951.

Psilocybe kumaenorum R. Heim 1967

fungi species in the hymenogastraceae family

Psilocybe kumaenorum is a species of mushroom in the family Hymenogastraceae. The mushroom contains the psychoactive compound psilocybin. It is in the section Zapotecorum of the genus Psilocybe, other members of this section include Psilocybe muliercula, Psilocybe angustipleurocystidiata, Psilocybe aucklandii, Psilocybe collybioides, Psilocybe graveolens, Psilocybe zapotecorum, Psilocybe pintonii, Psilocybe subcaerulipes, Psilocybe moseri, Psilocybe zapotecoantillarum, Psilocybe zapotecocaribaea, and Psilocybe antioquiensis. It was described in 1967 from Papua New Guinea by French mycologist

Psilocybe hoogshagenii R. Heim 1959

fungi species in the hymenogastraceae family

Psilocybe hoogshagenii is a species of psilocybin mushroom in the family Hymenogastraceae. The mushroom has a brownish conical or bell-shaped cap up to 3 cm (1.2 in) wide that has an extended papilla up to 4 mm long. The stem is slender (up to 3 mm thick) and 5 to 9 cm (2.0 to 3.5 in) long. The variety P. hoogshagenii var. convexa lacks the long papilla. The species is found in Mexico, where it grows singly or in small groups in clayey soils in subtropical coffee plantations, and from Colombia and Brazil in South America. The mushroom contains the psychedelic compounds psilocybin and

Lactarius amarus R. Heim 1938

fungi species in the russulaceae family

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Hodophilus R. Heim 1958

fungi genus in the clavariaceae family

Hodophilus is a genus of agarics (gilled fungi) in the family Clavariaceae. Basidiocarps (fruit bodies) are dull-coloured and have dry caps, rather distant, decurrent lamellae, white spores, and smooth, ringless stems. In Europe species are characteristic of old, unimproved grasslands (termed waxcap grasslands) which are a declining habitat, making them of conservation concern. Several species have a distinct odour of naphthalene.

Endogonopsis sacramentarium R. Heim 1966

fungi species in the diplocystidiaceae family

Endogonopsis is a poorly known fungal genus, provisionally placed in the Diplocystaceae family. A monotypic genus, it contains the single species Endogonopsis sacramentarium, known from southern Asia. It was originally described by French mycologist Roger Heim in 1966.

Cyttarophyllopsis cordispora R. Heim 1968

fungi species in the bolbitiaceae family

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Battarreoides diguetii (Saltshaker Stiltball) (Pat. & Har.) R. Heim & T. Herrera 1962

fungi species in the agaricaceae family

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