Klas Robert Elias Fries

Swedish biologist (1876-1966).

(Klas) Robert Elias Fries (11 July 1876, Uppsala – 29 January 1966, Stockholm), the youngest son of Theodor Magnus Fries (1832–1913) and grandson of Elias Magnus Fries (1794–1878) and an expert on mushrooms. A Swedish botanist who was a member of the British Mycological Society and involved with The Botanical Museum (UPS), Botanic Garden and Botanical Museum Berlin-Dahlem, Natural History Museum (BM), the National Botanic Garden of Belgium (BR), Conservatoire et Jardin botaniques de la Ville de Genève (G), Royal Botanic Gardens, Kew (K),the Swedish Museum of Natural History Department of Pha

Abbreviations: R.E.Fr.
Occupations: scientific collector, mycologist, botanist, botanical collector
Citizenships: Sweden
Languages: Swedish
Dates: 1876-07-11T00:00:00Z – 1966-01-29T00:00:00Z
Birth place: Uppsala Cathedral Assembly
Direct attributions: 554 plants, 4 fungi
Authorship mentions: 699 plants, 5 fungi

554 plants attributed, 145 plants contributed to699 plants:

Uvariodendron (Engl. & Diels) R.E.Fr. 1930
plant genus in the annonaceae family
Uvariodendron is a genus of plants in the family Annonaceae. It contains the following species (but this list may be incomplete): Uvariodendron anisatum Verdc. Uvariodendron connivens (Benth.) R.E.Fries Uvariodendron fuscum (Benth.) R.E.Fries Uvariodendron giganteum (Engl.) R.E.Fr. Uvariodendron gorgonis Verdc. Uvariodendron kirkii Verdc. Uvariodendron occidentale Le Thomas Uvariodendron oligocarpum Verdc. Uvariodendron pycnophyllum (Diels) R.E. Fr. Uvariodendron usambarense R.E. Fr.
Tetrameranthus R.E.Fr. 1939
plant genus in the annonaceae family
Tetrameranthus is a genus of plant in family Annonaceae. It contains 8 species, all occurring in South America. As of January 2025, Plants of the World Online accepts the following 8 species: Tetrameranthus duckei R.E.Fr. – Brazil North, Colombia, Peru, Venezuela Tetrameranthus globuliferus Westra (as Tetrameranthus globulifer) – Ecuador Tetrameranthus guianensis Westra & Maas – Brazil North, French Guiana Tetrameranthus laomae D.R.Simpson – Brazil North, Colombia, Peru Tetrameranthus macrocarpus R.E.Fr. – Colombia Tetrameranthus pachycarpus Westra – Peru Tetrameranthus trichocarpus Maas &
Malmea R.E.Fr. 1906
plant genus in the annonaceae family
Malmea is a genus of plants in the custard apple family Annonaceae native to tropical America.
Unonopsis R.E.Fr. 1900
plant genus in the annonaceae family
Unonopsis is a genus of plants in the family Annonaceae native to southern Mexico and tropical America. As of January 2025, Plants of the World Online accepts the following 48 species:
Onychopetalum (Ophrypetalum) R.E.Fr. 1931
plant genus in the annonaceae family
Onychopetalum is a genus of flowering plants belonging to the family Annonaceae. Its native range is Southern Tropical America. Species: Onychopetalum amazonicum R.E.Fr. Onychopetalum periquino (Rusby) D.M.Johnson & N.A.Murray
Lobelia aberdarica (Aberdare Lobelia) R.E.Fr. & T.C.E.Fr. 1922
plant species in the campanulaceae family
Lobelia aberdarica is a species of plant in the family Campanulaceae. It is restricted to the uplands of Kenya and Uganda (1860-3350m). It has been found in the forests of Cherangani hills, Kenya. Its natural habitats are lower and upper montane and subalpine swamps and meadows. It has been brought into cultivation.
Froesiodendron R.E.Fr. 1956
plant genus in the annonaceae family
Froesiodendron is a genus of flowering plants in the custard apple and soursop family Annonaceae, with all species native to South America.
Cremastosperma R.E.Fr. 1930
plant genus in the annonaceae family
Cremastosperma is a genus of flowering plants in the family Annonaceae, subfamily Malmeoideae, tribe Malmeae. In 2018 there were 34 recognised species distributed in Central and South America. Cremastosperma was described by Robert Elias Fries in 1930, based on Aberemoa pedunculata Diels, originally described by Ludwig Diels (1906), which thus became the type species Cremastosperma pedunculatum (Diels) R.E.Fr.. Species of Cremastosperma are found in lowland to pre-montane tropical forest in the Neotropics. The greatest species diversity is distributed in the narrow tropical zone to the west
Bocageopsis R.E.Fr. 1931
plant genus in the annonaceae family
Bocageopsis is a genus of flowering plants belonging to the family Annonaceae. Its native range is Southern Tropical America. Species: Bocageopsis canescens (Benth.) R.E.Fr. Bocageopsis mattogrossensis (R.E.Fr.) R.E.Fr. Bocageopsis multiflora (Mart.) R.E.Fr. Bocageopsis pleiosperma Maas
Annona ekmanii R.E.Fr. 1927
critically endangered plant species in the annonaceae family
Annona ekmanii is a species of flowering plant in the Annonaceae family. It is a shrub or tree endemic to the Sierra de Nipe in eastern Cuba. The species was first described by Robert Elias Fries in 1927.
Pseudoxandra R.E.Fr. 1937
plant genus in the annonaceae family
Pseudoxandra is a genus of plant in family Annonaceae. It contains the following species: Pseudoxandra angustifolia Maas Pseudoxandra atrata Maas Pseudoxandra cuspidata Maas Pseudoxandra leiophylla (Diels) R.E.Fr. Pseudoxandra longipes Maas Pseudoxandra lucida R.E.Fr. Pseudoxandra pacifica Maas Pseudoxandra papillosa Maas Pseudoxandra parvifolia Maas Pseudoxandra polyphleba (Diels) R.E.Fr. Pseudoxandra sclerocarpa Maas Pseudoxandra vallicola Maas Pseudoxandra williamsii (R.E.Fr.) R.E.Fr.
Annona tomentosa R.E.Fr. 1906
plant species in the annonaceae family
Annona tomentosa is a species of plant in the family Annonaceae. It is native to Bolivia and Brazil. Robert Elias Fries, the Swedish botanist who first formally described the species, named it after the dense woolly hairs (tomentosus in Latin) covering its branches and leaves.
Annona nutans (R.E.Fr.) R.E.Fr. 1904
plant species in the annonaceae family
Annona nutans is a species of plant in the family Annonaceae. It is native to northern Argentina, Bolivia, central and southeastern Brazil, and Paraguay. Robert Elias Fries, the Swedish botanist who first formally described the species, named it after its recurved peduncles which give the flowers a nodding (nutans in Latin) appearance.
Annona dolichophylla R.E.Fr. 1947
plant species in the annonaceae family
Annona dolichophylla is a species of flowering plant in the Annonaceae family. It is a tree native to northern Brazil, southeastern Colombia, Ecuador, and northern Peru. It grows in lowland Amazon Rainforest. The species was first described by Robert Elias Fries in 1947.
Annona deminuta R.E.Fr. 1931
plant species in the annonaceae family
Annona deminuta is a species of flowering plant in the family Annonaceae. It is a tree native to northwestern Brazil and northern Peru. It grows in lowland Amazon Rainforest. The species was first described by Robert Elias Fries in 1931.
Annona asplundiana R.E.Fr. 1947
vulnerable plant species in the annonaceae family
Annona asplundiana is a species of plant in the Annonaceae family. It is native to Peru, Ecuador and Brazil. It is considered as a vulnerable species by the IUCN.
Viola eminii R.E.Fr. 1925
perennial plant species in the violaceae family
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Guatteria guianensis (Aubl.) R.E.Fr. 1939
plant species in the annonaceae family
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Anonidium usambarense R.E.Fr. 1930
plant species in the annonaceae family
Anonidium usambarense was a tall tree in the family Annonaceae, formerly endemic to Tanzania. A single specimen was collected in 1910 at Amani in the Usambara mountains, at an elevation of 900m. In spite of intensive field work in the region looking specifically for this species, no other examples were found and it was declared extinct in 1998. The causes for its disappearance were the timber industry and the desire to expand agricultural land. It is currently declared as 'data deficient' due to confusion about the type specimen.
Annona manabiensis Saff. ex R.E.Fr. 1931
endangered plant species in the annonaceae family
Annona manabiensis is a species of plant in the Annonaceae family. It is endemic to Ecuador. Its natural habitat is subtropical or tropical dry forests. It is threatened by habitat loss.
Annona ecuadorensis R.E.Fr. 1957
critically endangered plant species in the annonaceae family
Annona ecuadorensis is a species of plant in the Annonaceae family. It is endemic to Ecuador. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Xylopia micans R.E.Fr. 1937
plant species in the annonaceae family
Xylopia micans is a species of plant in the Annonaceae family. It is native to Colombia, Ecuador and Peru. Robert Elias Fries, the botanist who first formally described the species, named it after the gleaming (micans in Latin) hairs on the undersides of its leaves.
Xylopia laevigata (Mart.) R.E.Fr. 1900
plant species in the annonaceae family
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Xylopia densiflora R.E.Fr. 1938
endangered plant species in the annonaceae family
Xylopia densiflora is a species of plant in the Annonaceae family. It is native to Peru. Robert Elias Fries, the botanist who first formally described the species, named it after its dense (densi- in Latin) clusters of flowers.
Xylopia calophylla R.E.Fr. 1939
plant species in the annonaceae family
Xylopia calophylla is a species of plant in the Annonaceae family. It is native to Bolivia, Brazil, Colombia, Ecuador, Peru and Venezuela. Robert Elias Fries, the botanist who first formally described the species, named it after its beautiful leaves (Latinized forms of Greek καλλι-, calli- and φυλλον, phullon).
Xylopia benthamii R.E.Fr. 1900
plant species in the annonaceae family
Xylopia benthamii is a species of flowering plant of the genus Xylopia, described by Robert Elias Fries in 1900. It contains one subspecies: Xylopia benthamii dolichopetala. The species is native to Venezuela, Peru, Brazil and Bolivia.
Xylopia amazonica R.E.Fr. 1939
plant species in the annonaceae family
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Uvariodendron connivens (Benth.) R.E.Fr. 1930
plant species in the annonaceae family
Uvariodendron connivens is a species of plant in the family Annonaceae. It is found in Cameroon and Nigeria. It is threatened by habitat loss.
Senecio keniophytum R.E.Fr. 1928
plant species in the asteraceae family
Atop of Mount Kenya Senecio keniophytum is one of the endemic groundsel (Senecio) found at high altitudes in Kenya, such as the Afro-alpine zone of Mount Kenya, but not one of the giant Dendrosenecio that also live there.
Pseudoxandra williamsii (R.E.Fr.) R.E.Fr. 1937
plant species in the annonaceae family
Pseudoxandra williamsii is a species of plant in the Annonaceae family. It is endemic to Peru. Robert Elias Fries, the Swedish botanist who first formally described the species using the basionym Cremastosperma williamsii, named it after Llewelyn W. Williams, the Welsh economic botanist, who collected the holotype specimen he examined.
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