Hermann Edward Hasse (12 January 1836 – 29 October 1915) was an American lichenologist.H. E. Hasse, Lichenist, Kerry Knudsen, Opuscula Philolichenum, 8: 59-66. 2010

/ref> He wrote two important texts and numerous articles in his field.Lecidea hassei, Consortium of North American Lichen Herbaria
/ref> '' Hassea'', which is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

fungi A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...

in the class

Dothideomycetes Dothideomycetes is the largest and most diverse class of ascomycete fungi. It comprises 11 orders 90 families, 1,300 genera and over 19,000 known species. Wijayawardene et al. in 2020 added more orders to the class. Traditionally, most of it ...

, and ''

Lecidea hassei ''Lecidea hassei'' (Hasse's lecidea lichen) is an endolithic lichen that appears as tiny black, gray rimmed, plate-like or crinkled discs between crystals of rock in California. The main body grows ''inside'' solid rock (endolithic), and the cri ...

'', a lichen that grows inside solid rock ( endolithic lichen), were both named in his honor. He principally did his research in southern California. His correspondents included cryptogamic botanist

William Gilson Farlow William Gilson Farlow (December 17, 1844 – June 3, 1919) was an American botanist, mycologist, and professor at Harvard University for more than 40 years. Farlow conducted groundbreaking research on plant pathology, taught the first plant patho ...

and lichenologist

George Knox Merrill George Knox Merrill (16 October 1864 –21 October 1927) was an American lichenologist. He was a leading exponent of lichenology in the early 20th century. He was particularly interested in species of the family Cladoniaceae, in which he publishe ...

Publications

In 1913, Hasse published ''The Lichen Flora Of Southern California'', a

flora Flora (: floras or florae) is all the plant life present in a particular region or time, generally the naturally occurring (indigenous (ecology), indigenous) native plant, native plants. The corresponding term for animals is ''fauna'', and for f ...

of the

lichen A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualism (biology), m ...

s of southern

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

covering about 400

taxa In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and ...

. Lichenologist Kerry Knudsen described it as "historic" in the lichenology journal '' Opuscula Philolichenum''., written by Hermann Edward Hasse. He also wrote the earlier ''Lichens of Southern California'', published in 1898, and 30 other papers and notes on lichens, many published in ''

The Bryologist ''The Bryologist'' is a peer reviewed scientific journal specializing in bryology. It is published quarterly by the American Bryological and Lichenological Society (ABLS). It began as a department of '' The Fern Bulletin'' devoted to the study o ...

''.

References

External sources

*Letters, Archives of the Farlow Herbarium of Cryptogamic Botany 1836 births 1915 deaths American lichenologists {{mycologist-stub