David Leslie Hawksworth

British mycologist and lichenologist.

David Leslie Hawksworth (born 1946 in Sheffield, UK) is a British mycologist and lichenologist currently with a professorship in the Universidad Complutense de Madrid in Madrid, Spain and also a Scientific Associate of The Natural History Museum in London. Hawksworth has had a prolific career, authoring nearly 600 scientific works (including almost 60 books), describing approximately 250 new taxa, and proposing around 500 new combinations or new names in fungal nomenclature. In 1996, he was honoured as Commander of the British Empire (CBE). In 2002, he received the Acharius Medal from the Int

Abbreviations: D.Hawksw.
Occupations: mycologist, lichenologist, botanist, council member, botanical collector
Citizenships: United Kingdom
Languages: Spanish, English
Dates: 1946-01-01T00:00:00Z
Birth place: Sheffield
Direct attributions: 4 plants, 679 fungi
Authorship mentions: 4 plants, 727 fungi

679 fungi attributed, 48 fungi contributed to727 fungi:

Sordariales Chadef. ex D. Hawksw. & O.E. Erikss. 1986
fungi order in the class sordariomycetes
The order Sordariales is one of the most diverse taxonomic groups within the Sordariomycetes (subdivision Pezizomycotina, division Ascomycota). Species in the order Sordariales have a broad range of ecological diversity, containing lignicolous, herbicolous and coprophilous taxa. Most Sordariales are saprobic, producing solitary perithecial ascomata. They are commonly found on dung or decaying plant matter. The order contains a number of ecologically important species, including the model filamentous fungal genera Podospora and Neurospora, as well as potentially industrial-relevant fungi, such
Bryoria (Horsehair Lichen) Brodo & D. Hawksw. 1977
fungi genus in the parmeliaceae family
Bryoria is a genus of lichenized fungi in the family Parmeliaceae. Many members of this genus are known as horsehair lichens. The genus has a widespread distribution, especially in boreal and cool temperate areas. These lichens typically grow as slender, hair-like strands that hang from conifer trees or form small bushes, ranging in colour from dark brown to pale grey. They play important ecological roles, particularly as winter food for caribou in northern forests, where some species can accumulate in large quantities in the forest canopy. The genus contains about 35 species found worldwide,
Pyrenulales Fink ex D. Hawksw. & O.E. Erikss. 1986
fungi order in the class eurotiomycetes
The Pyrenulales are an order of ascomycetous fungi within the class Eurotiomycetes and within the subphylum Pezizomycotina.
Melanohalea (Camouflage Lichens) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch 2004
fungi genus in the parmeliaceae family
Melanohalea is a genus of foliose lichens in the family Parmeliaceae. It contains 30 mostly Northern Hemisphere species that grow on bark or on wood. The genus is characterised by the presence of pseudocyphellae (tiny pores that allow for gas exchange), usually on warts or on the tips of isidia, a non-pored epicortex and a medulla containing depsidones or lacking secondary metabolites. Melanohalea was circumscribed in 2004 as a segregate of the morphologically similar genus Melanelia, which was created in 1978 for certain brown Parmelia species. The methods used to estimate the evolutionary
Illosporiopsis christiansenii (B.L. Brady & D. Hawksw.) D. Hawksw. 2001
fungi species in the order hypocreales
Illosporiopsis christiansenii is a species of fungus that parasitizes lichen which is found in Europe and North America. It was first described as Hobsonia christiansenii.
Bryoria fuscescens (Pale-footed Horsehair Lichen) (Gyeln.) Brodo & D. Hawksw. 1977
fungi species in the parmeliaceae family
Bryoria fuscescens is a species of lichen of the family Parmeliaceae. As of July 2021, its conservation status has not been estimated by the IUCN. In Iceland, where it grows as an epiphyte on downy birch stems and branches, it is classified as a vulnerable species (VU).
Bryoria fremontii (Black Tree Lichen) (Tuck.) Brodo & D. Hawksw. 1977
fungi species in the parmeliaceae family
Bryoria fremontii is a dark brown horsehair lichen that grows hanging from trees in western North America, and northern Europe and Asia. It grows abundantly in some areas, and is an important traditional food for a few First Nations in North America.
Zopfiaceae G. Arnaud ex D. Hawksw. 1992
fungi family in the order pleosporales
The Zopfiaceae are a family of fungi in the order Pleosporales. Taxa have a widespread distribution, and appear to be saprobic, found largely on rhizomes and roots. Some species are found in marine environments.
Sarocladium oryzae (Sawada) W. Gams & D. Hawksw. 1976
fungi species in the order hypocreales
Sarocladium oryzae is a plant pathogen causing the sheath rot disease of rice and bamboo blight of Bambusoideae spp. in Asia.
Nephromataceae Wetmore ex J.C. David & D. Hawksw. 1991
fungi family in the order peltigerales
The Peltigeraceae are a family of lichens in the order Peltigerales. The Peltigeraceae, which contains 15 genera and about 600 species, has recently (2018) been emended to include the families Lobariaceae and Nephromataceae. Many Peltigeraceae species have large and conspicuous, leathery thalli. They largely occur in cool-temperate to tropical montane climates. Tripartite thalli involving fungus, green algae and cyanobacteria are common in this family.
Melanohalea exasperatula (Lustrous Camouflage Lichen) (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch 2004
fungi species in the parmeliaceae family
Melanohalea exasperatula, commonly known as the lustrous camouflage lichen or lustrous brown-shield, is a species of corticolous (bark-dwelling) foliose lichen in the family Parmeliaceae. It has a widespread global distribution and is common in both Europe and northern North America. Its thallus can grow up to 5 cm (2 in) in diameter, with marginal lobes up to 5 mm (3⁄16 in) broad. The upper surface is pale olive-green to red-brown, with isidia (propagules of vegetative reproduction) that are unbranched, inflated, and hollow. It can be distinguished from similar species by the shape and
Melanohalea elegantula (Elegant Camouflage Lichen) (Zahlbr.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch 2004
fungi species in the parmeliaceae family
Melanohalea elegantula, commonly known as the elegant camouflage lichen, is a species of foliose lichen in the family Parmeliaceae. It was first described by Alexander Zahlbruckner in 1894 as Parmelia aspidota var. elegantula. Hungarian lichenologist Ödön Szatala promoted it to full species status, as Parmelia elegantula, in 1930. Theodore Esslinger transferred it to the genus Melanelia in 1978. Finally, it was assigned to the newly circumscribed genus Melanohalea in 2004.
Melanelixia O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch 2004
fungi genus in the parmeliaceae family
Melanelixia is a genus of foliose lichens in the family Parmeliaceae. It contains 15 Northern Hemisphere species that grow on bark or on wood. The genus is characterized by a pored or fenestrate epicortex (a thin homogeneous polysaccharide layer on the surface of the cortex), and the production of lecanoric acid as the primary chemical constituent of the medulla. Melanelixia was circumscribed in 2004 as a segregate of the related genus Melanelia.
Patellariales D. Hawksw. & O.E. Erikss. 1986
fungi order in the class dothideomycetes
The Patellariaceae are a family of sac fungi. It is the only representative of the order Patellariales. According to a 2008 estimate, the family contains 15 genera and 38 species.
Ascodichaenaceae D. Hawksw. & Sherwood 1982
fungi family in the order rhytismatales
The Ascodichaenaceae are a family of fungi in the order Rhytismatales.
Paranectria oropensis (Ces.) D. Hawksw. & Piroz. 1977
fungi species in the bionectriaceae family
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Melanelixia subaurifera (Abraded Camouflage Lichen) (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch 2004
fungi species in the parmeliaceae family
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Melanelixia fuliginosa (Shiny Camouflage Lichen) (Fr. ex Duby) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch 2004
fungi species in the parmeliaceae family
Melanelixia fuliginosa is a species of foliose lichen in the family Parmeliaceae, commonly found growing on siliceous rocks in humid, temperate regions of Europe and possibly parts of Asia. It forms dark brown to blackish rosettes up to 15 cm in diameter with small overlapping lobes that bear numerous tiny, cylindrical outgrowths (isidia) on their surface. The lichen primarily reproduces by vegetative means when these isidia break off and establish new colonies. Originally described by French botanist Jean Étienne Duby in 1830 as a variety of another lichen, it has undergone several taxonomic
Helicogermslita Lodha & D. Hawksw. 1983
fungi genus in the xylariaceae family
Helicogermslita is a genus of fungi in the family Xylariaceae. Fossils have been found in rocks 12 million year old sediments from central England.
Bryoria nadvornikiana (Spiny Gray Horsehair Lichen) (Gyeln.) Brodo & D. Hawksw. 1977
fungi species in the parmeliaceae family
Bryoria nadvornikiana, commonly known as the spiny grey horsehair lichen or the blonde horsehair lichen, is a species of horsehair lichen in the family Parmeliaceae. In Nepal, B. nadvornikiana has been reported from 3,800 to 3,900 m elevation in a compilation of published records.
Xanthoriicola physciae (Kalchbr.) D. Hawksw. 1973
fungi species
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Vezdaeaceae (Vezdaea) Poelt & Vězda ex J.C. David & D. Hawksw. 1991
fungi family in the order vezdaeales
Vezdaea is a genus of crustose lichens in the monotypic family Vezdaeaceae, which itself is the only taxon in the order Vezdaeales. The genus was established in 1976 and named after the Czech lichenologist Antonín Vězda for his contributions to lichen science. These lichens form extremely thin crusts that appear as dustings of tiny greenish to grey particles on decaying moss, plant debris, and soil, particularly in metal-enriched environments that other lichens avoid. The genus contains 14 species.
Taeniolella phaeophysciae D. Hawksw. 1979
fungi species in the mytilinidiaceae family
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Pseudephebe minuscula (Coarse Rockwool) (Nyl. ex Arnold) Brodo & D. Hawksw. 1977
fungi species in the parmeliaceae family
Pseudephebe minuscula is a species of fruticose lichen in the family Parmeliaceae. In North America, it is known colloquially as coarse rockwool. It has an antitropical distribution.
Parmelia serrana A. Crespo, M.C. Molina & D. Hawksw. 2004
fungi species in the parmeliaceae family
Parmelia serrana is a species of foliose lichen in the family Parmeliaceae. It is native to Mediterranean regions, particularly in mountainous areas. It is a member of a complex of similar species centred around the common and widespread Parmelia saxatilis. It can be distinguished from these close relatives by the combination of long, sparsely branched lobes, numerous orbicular soralia, small pseudocyphellae, and sparse, mostly simple rhizines.
Odontotremataceae D. Hawksw. & Sherwood 1982
fungi family in the order ostropales
The Odontotremataceae are a family of fungi in the monotaxonomic order Odontotrematales. Species of this family have a widespread distribution, but are especially prevalent from northern temperate areas.
Muellerella pygmaea (Dwarf Muellerella Lichen) (Körb.) D. Hawksw. 1979
fungi species in the verrucariaceae family
Muellerella pygmaea is a species of lichenicolous fungus in the family Verrucariaceae. It has a cosmopolitan distribution in Arctic-alpine areas and grows on the thallus and apothecia of a number of hosts. Host species for Muellerella pygmaea include: Acarospora sp. Acarospora smaragdula Aspicilia calcarea Candelariella aurella Carbonea assentiens Lecanora alpigena Lecanora muralis Lecanora polytropa Lecidea grisella Lecidea lapicida Lecidea obluridata Tephromela atra Rhizocarpon geographicum Rusavskia elegans
Meliolales Gäum. ex D. Hawksw. & O.E. Erikss. 1986
fungi order in the class sordariomycetes
Meliolales is a fungal order in the class Sordariomycetes. Meliolales, also known as black mildews, are obligate parasitic ascomycetous fungi that are found in the tropics and subtropics on leaves, twigs, and sometimes fruit of vascular plants. As parasites, they are frequently parasitized by other fungi, known as hyperparasites.
Melanohalea zopheroa (Essl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch 2004
fungi species in the parmeliaceae family
Melanohalea zopheroa is a species of lichen in the family Parmeliaceae. It was first formally described in 1977 by Ted Esslinger as Parmelia zopheroa. A year later, he transferred it to the new genus Melanelia, which he created to contain the brown Parmeliae species. In 2004, after early molecular phylogenetic evidence showed that Melanelia was not monophyletic, Melanohalea was circumscribed by lichenologists Oscar Blanco, Ana Crespo, Pradeep K. Divakar, Esslinger, David L. Hawksworth and H. Thorsten Lumbsch, and M. zopheroa was transferred to it. The lichen has a disjunct distribution, as it
Melanohalea ushuaiensis (Zahlbr.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch 2004
fungi species in the parmeliaceae family
Melanohalea ushuaiensis is a species of lichen in the family Parmeliaceae. It was first formally described in 1917 by Alexander Zahlbruckner as Parmelia ushuaiensis. Ted Esslinger transferred to the new genus Melanelia in 1978, which he circumscribed to contain the brown parmeliae species. In 2004, it was moved to the newly created genus Melanohalea. It is endemic to South America.
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