Roderick Westgarth Rogers

The Ophioparmaceae are a small family of lichen-forming fungi in the order Umbilicariales.

Sagenidiopsis is a genus of lichen-forming fungi in the family Arthoniaceae. It was circumscribed in 1987 by lichenologists Roderick Rogers and Josef Hafellner to contain the type species S. merrotsii, found in Australia. The characteristic features of the genus include the byssoid (cottony) thallus and bitunicate asci (enclosed in a double wall) that lack amyloid structures that are apparent in the thallus.

Candelariella xanthostigmoides is a sorediate, corticolous (bark-dwelling) crustose lichen in the family Candelariaceae. Typical thalli consist of small, deep-yellow patches that break into powdery propagules called soredia—microscopic clumps of algal cells bound by fungal filaments that serve for asexual dispersal. Apothecia (disc-like fruiting bodies) are uncommon; when present, the spore sacs (asci) are eight-spored. The species is known from Australia, Asia (including Japan and South Korea), North America and South America (Argentina). European records formerly using this name have been

Parmotrema circinatum is a species of foliose lichen in the family Parmeliaceae. It grows on twigs in open coastal woodland near Mackay in eastern Queensland, Australia. The lichen forms a greyish, leafy crust up to 8 cm across with distinctive coiled, densely branched lobes along its margins that lack the hair-like fringes found in related species. It is known only from its original collection site, roughly 100 metres from the shoreline.

Haematomma stevensiae is a species of bark-dwelling crustose lichen in the family Haematommataceae. It is found on the bark of mangrove trees in tropical coastal areas, particularly in Queensland, where it forms a white to grey-green crust on the tree surface. The species is named after Gweneth Nell Stevens in recognition of her pioneering work on lichens in Australian mangrove forests. Later studies have shown that populations resembling this species also occur in other Indo-Pacific regions, including Japan, Java, and the Philippines, suggesting a distribution extending well beyond its

Haematomma sorediatum is a species of corticolous (bark-dwelling) crustose lichen in the family Haematommataceae. It is distinctive among its relatives for producing soredia (powdery asexual reproductive particles containing fungal and algal cells) in small, round soralia; these soredia can disperse and form new lichen bodies (thalli). It forms pale white to greyish crusts on tree bark and has been recorded in Australia and New Zealand, with scattered records in Europe and the Americas. When it produces fruiting bodies, they are bright red and stand out against the pale thallus. The species

Haematomma eremaeum is a bark-dwelling crustose lichen in the family Haematommataceae. It is a small lichen that grows on the bark of trees and shrubs in dry inland areas of Western Australia, where it appears as a greyish crust. The species is distinguished by its tiny red-coloured fruiting bodies, and by the presence of a rare chemical compound in its tissues. It was first formally described in 1982 when lichenologist Roderick Rogers revised the Australian species in its genus.

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Maronina is a genus of crustose, lichen-forming fungi in the family Parmeliaceae (order Lecanorales). It currently comprises three species, with the type species, Maronina australiensis, restricted to mangrove habitats in subtropical eastern Australia. The genus was established in 1990 for species with unusually many-spored asci, but its circumscription has undergone several revisions based on DNA evidence, leading to the removal of most tropical bark-dwelling species to other genera, particularly Neoprotoparmelia. In the strict circumscription proposed from DNA evidence, Maronina is

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