Taxa described in 1850

Phalacrocoracidae is a family of approximately 40 species of aquatic birds found worldwide and commonly known as cormorants and shags. Several different classifications of the family have been proposed, but in 2021 the International Ornithologists' Union (IOU) adopted a consensus taxonomy of seven genera.

Clethrionomys is a genus of small, slender voles. In recent years the genus name was changed to Myodes, however a 2019 paper found that Myodes was actually a junior synonym for Lemmus, thus making it unusable. As such, Clethrionomys is re-established as the proper genus name. At the same time, several species were moved to the genus Craseomys, so members of both genera are referred to as red-backed voles. This genus was described by Johannes von Nepomuk Franz Xaver Gistel under the pseudonym "G. Tilesius". Some authors cite the taxonomic authority as "Gistel, 1850", whereas others still use "T

Melozone is a genus of mostly Neotropical birds in the family Passerellidae, found mainly in Mexico. Three species reach as far north as the southwestern United States, two species reach as far south as Costa Rica, and two are endemic to Mexico.

Chrysuronia is a genus of hummingbirds in the family Trochilidae, all of which are native to Central and South America.

Hestina is a genus of butterflies in the family Nymphalidae subfamily Apaturinae. The genus is found in the East Palearctic and Southeast Asia.

Trechona is a genus of South American curtain web spiders that was first described by C. L. Koch in 1850. The venom of at least one species is considered potentially dangerous to humans.

Amphiblemma is a genus of flowering plants in the family Melastomataceae. It includes 14 species native to the evergreen forests of west and central tropical Africa.

thumb|Perillus sp. nymph thumb|Podisus maculiventris Asopinae are a subfamily of stink bugs (family Pentatomidae). They are predatory stink bugs that are useful as biological control agents against pests, even against other Pentatomid species, which are all herbivorous.

Hypselodelphys is a group of plants in the Marantaceae described as a genus in 1950. native to tropical Africa from Liberia to Uganda and south to Angola. It contains 8 recognized species:

Desmoscelis is a genus of flowering plants belonging to the family Melastomataceae.

Sarcogyne is a genus of crustose lichen-forming fungi in the family Acarosporaceae. It was circumscribed by German botanist Julius von Flotow in 1850. A proposal has been put forth in 2021 to assign Sarcogyne clavus as the type species of the genus, "as it represents the original concept of Sarcogyne as having melanized apothecia without algae in the margin".

Catapyrenium is a genus of squamulose lichens in the family Verrucariaceae. These small lichens grow as clusters of tiny scales ( that lie flat against rocks and soil, often in dry or disturbed habitats. The genus includes about 18 species found worldwide, particularly in arid and semi-arid regions where they help stabilize soil surfaces.

Pterogastra is a genus of flowering plants belonging to the family Melastomataceae.

Castratella is a genus of flowering plant belonging to the family Melastomataceae.

Catolechia is a genus of lichen-forming fungi in the family Rhizocarpaceae. It is a monotypic genus, containing the single species Catolechia wahlenbergii. The genus was circumscribed by the German botanist Julius von Flotow in 1850. He did not assign a type species for the genus; Catolechia pulchella was designated as the type by Gustav Wilhelm Körber in 1855. This species is synonymous with Catolechia wahlenbergii.

Thamnolia is a genus of lichens in the family Icmadophilaceae. Members of the genus are commonly called whiteworm lichens.

Calliobothrium is a genus of cestodes in the order Tetraphyllidea. Most, or possibly all, of the known species are parasites found within the intestines of members of the shark family Triakidae. It is known that in some instances at least two different species of Calliobothrium can parasitise the same species of shark.

species of bird

Laoma is a genus of land snails belonging to the family Punctidae. All known members of the genus are endemic to New Zealand.