Taxa described in 1991

The Phlyctidaceae are a family of lichenized fungi in the order Gyalectales. Species in this family have primarily a tropical distribution, and are usually found growing on bark.

Mimoides is a genus of butterflies in the family Papilionidae. The species native to the Americas were formerly in genus Eurytides.

Tomentaurum is a genus of Mexican plants in the family Asteraceae. Its species are native to northern Mexico.

Bacidina is a genus of crustose lichens in the family Ramalinaceae.

Allocetraria is a genus of lichenized fungi in the family Parmeliaceae. It consists of 12 species, with a center of distribution in China.

Tasmanipatus barretti, the giant velvet worm, is a species of velvet worm in the Peripatopsidae family. It is the sole species in the genus Tasmanipatus and is ovoviviparous.

Paratemnoides is a genus of pseudoscorpions in the Atemnidae family. It was described in 1991 by Australian arachnologist Mark Harvey.

Architrypethelium is a genus of lichen-forming fungi in the family Trypetheliaceae.

Distopyrenis is a genus of fungi in the family Pyrenulaceae.

Prothemenops is a genus of Southeast Asian armored trapdoor spiders that was first described by Peter J. Schwendinger in 1991.

REDIRECT Vezdaea

The Coccotremataceae are a family of lichen-forming fungi in the order Pertusariales. Species in this widely distributed family grow on bark or rocks, especially in maritime regions.

Vainionora is a genus of lichen in the family Lecanoraceae. The genus, which was circumscribed in 1991 by German lichenologist Klaus Kalb, honours the Finnish lichenologist Edvard Vainio, who described the type species as Lecanora pallidostraminea in 1890.

Megalotremis is a genus of lichen-forming fungi in the family Monoblastiaceae. It has 16 species. The genus was circumscribed by Dutch lichenologist André Aptroot in 1991, with Megalotremis verrucosa assigned as the type species. Megalotremis is a genus, meaning its species have ascocarps: spherical or flask-shaped, sessile or partly immersed in the thallus, with a single opening (ostiole) and enclosed by a distinct wall.

Coelopogon is a genus of lichen-forming fungi in the family Parmeliaceae. The genus contains two species found in southern South America and South Africa.

Colacogloea is a genus of fungi belonging to the class Microbotryomycetes. Most species in the genus are known only from their yeast states. Where known, basidiocarps (fruit bodies) have auricularioid (laterally septate) basidia and occur as parasites on or in the fruit bodies of other fungi.

Clypeopyrenis is a genus of lichen-forming fungi in the family Pyrenulaceae. The genus was circumscribed in 1991 by Dutch lichenologist André Aptroot, with Clypeopyrenis microsperma assigned as the type species. This lichen, originally described from material collected in Costa Rica, is also found in the Caribbean and South America. Clypeopyrenis porinoides was added to the genus in 2011; it was discovered in Costa Rica, close to the type locality of the type species.

REDIRECT Acipenseriformes#Classification

Llimonaea is a genus of lichen-forming fungi in the order Arthoniales. The genus has been placed into the family Opegraphaceae. These lichens form thin, firmly attached crusts that vary from chalky white and grey to olive-green or dark brown, often edged by a neat black line and characterized by rounded or scribble-like reproductive structures that sit flush with the surface. Established as a genus in 1991, Llimonaea species are distinguished by their partnership with orange-tinged green algae, their spindle-shaped spores with multiple cross-walls that gradually turn brown with age, and their

Austrolentinus is a fungal genus in the family Polyporaceae. Segregated from the genus Lentinus, it is monotypic, containing the single species Austrolentinus tenebrosus, which was first described by E.J.H. Corner in 1981 as Panus tenebrosus. Austrolentinus was circumscribed by Norwegian mycologist Leif Ryvarden in 1991. The fungus occurs in Queensland, Solomon Islands and Papua New Guinea, and the Malay Peninsula.

Hapsidascus is a fungal genus in the division Ascomycota. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family.

Streimannia is a genus of lichenized fungi in the family Roccellaceae. A monotypic genus, it contains the single species Streimannia varieseptata. The genus was circumscribed by Göran Thor in Opera Bot. vol.103 on page 84 in 1990.