Taxa described in 1820

thumb|Common Jezebel (Delias eucharis) thumb|Eastern greenish black-tip (Euchloe penia)

The Pierinae are a large subfamily of pierid butterflies. The subfamily is one of several clades of butterflies often referred to as the whites.

Leptidea is a genus of butterflies of family Pieridae, the whites and yellows. They live in Europe and Asia.

Teius is a genus of lizards in the family Teiidae. The genus is native to South America.

tribe of insects

Elaphomyces (‘deer truffles’) is a genus of hypogeous fungi in the family Elaphomycetaceae. The widespread genus contains 25 truffle-like species. Elaphomyces is one of the most important ectomycorrhizal fungal genera in temperate and subarctic forest ecosystems. E. asperulus, E. granulatus, and E. muricatus were found to accumulate arsenic (12–660 mg/kg in dry mass); the composition of organoarsenicals is very unusual, with methylarsonic acid and trimethylarsine oxide as major As compounds.

Polyura is a subgenus of butterflies also referred to as Nawab butterflies and belonging to the brush-footed butterfly subfamily Charaxinae, or leafwing butterflies. Like the large and conspicuous forest queens (subgenus Euxanthe), they belong to the genus Charaxes, unique genus of the tribe Charaxini.

Diaethria is a brush-footed butterfly genus found in the Neotropical realm, ranging from Mexico to Paraguay.

Cepora is a genus of butterflies, commonly called gulls, in the family Pieridae. The genus contains about 20 species shared between the Indomalayan and Australasian realms.

Eudocima is a genus of moths of the family Erebidae with numerous tropical species. The genus was first categorised by Gustaf Johan Billberg in 1820, and species currently in the genus have been placed under a range of other genera in the past. Adult moths in the genus are known for puncturing and feeding on the juices of fruits, because of which they are considered as pests by horticulturists.

Heliopetes is a Neotropical genus of spread-winged skipper butterflies in the family Hesperiidae.

genus of insects

Brownlowia is a genus of flowering plants in the family Malvaceae. It includes 29 species native to tropical Asia, ranging from India through Indochina and Malesia to New Guinea.

Coenogonium is a genus of filamentous lichens in the monotypic family Coenogoniaceae. It has about 90 species. Most species are leaf-dwelling or grow on bark, although a few are known to grow on rocks under certain conditions, and some are restricted to growth on termite nests. The genus was circumscribed in 1820 by German naturalist Christian Gottfried Ehrenberg.

Ganyra is a Neotropical genus of butterflies in the family Pieridae.

Torymus is a genus of chalcid wasps from the family Torymidae, and there are more than 400 spp. worldwide. It was named by the Swedish naturalist Johan Wilhelm Dalman in 1820. Most species are ectoparasitoids of gall forming insects, usually gall wasps and gall midges. thumb|left|Torymus sp., female

Hylephila is a genus of skippers in the family Hesperiidae.

Dalrympelea is a genus of flowering plants belonging to the family Staphyleaceae.

genus of tortoise beetles