Bruce Pettit McCune

Trapeliopsis steppica is a species of squamulose lichen in the family Trapeliaceae. It is found in the western United States, where it grows on soil in grassland and in shrub–steppe.

Pseudocyphellaria perpetua is a species of corticolous (bark-dwelling), foliose (leafy) cyanolichen in the family Peltigeraceae. It was described as new to science in 2002 by lichenologists Bruce McCune and Jolanta Miądlikowska. It is distinguished from similar species, including some forms of P. crocata, by its yellow medulla and mostly marginal soralia. Other characteristics include its narrow, linear lobes, and its pale lower undersurface. Some molecular phylogenetic analysis suggests that Pseudocyphellaria perpetua and P. crocata are morphotypes of the same phylogenetic species. P.

Hypogymnia apinnata, the beaded tube lichen, is a corticolous (bark-dwelling) foliose lichen in the family Parmeliaceae. It is found along the Pacific coast of North America from Alaska to the northwestern United States, and also occurs inland in parts of the Pacific Northwest. A separate population is also known from the Canadian Arctic. The lichen forms pale grey, hollow lobes (strap-like sections of the thallus) that are often somewhat swollen and typically lack the small edge projections found in closely related species. It grows mainly on conifer trees in coastal and inland forests, and

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Hypogymnia flavida is a species of foliose lichen in the family Parmeliaceae. It is found in mountainous locations of east Asia, where it grows on the bark and wood of woody plants. It has a relatively large yellowish thallus.

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Lobaria anomala, commonly known as the netted specklebelly, is a species of foliose lichen in the family Peltigeraceae. It is found in coastal western North America, where it grows on trees in humid environments. The lichen was first described as a new species in 1987 as a species of Pseudocyphellaria, though it had been mentioned in scientific papers before.

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Hypogymnia irregularis is a species of corticolous (bark-dwelling) and lignicolous (wood-dwelling), foliose lichen in the family Parmeliaceae. Found in Asia, it was formally described as a new species in 2011 by lichenologist Bruce McCune. The type specimen was collected by the author from Jiaoxi Mountain (north of Kunming, Yunnan) at an altitude of 3,700 m (12,100 ft), where it was found growing on the bark of Abies. It has since been recorded growing on the wood and bark of both conifers (including Picea, Pinus, Tsuga) and hardwood trees (including Rhododendron, Quercus, Sorbus, and dwarf

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Hypogymnia bulbosa is a species of foliose lichen in the family Parmeliaceae. Found in Southern China, it was described as a new species by Bruce McCune and Li-Song Wang in 2003. The type specimen was collected from the Zi ben Mountain in Cao County (Yunnan). There it was found growing on a spruce stump. It has also been recorded growing on the bark and wood of fir, willow, and Rhododendron. It is known to grow at elevations ranging between 2,800–3,800 metres (9,200–12,500 ft), generally in conifer forests. The lichen is characterized by features such as the rimmed holes on the lower surface

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Umbilicaria nodulospora is a species of foliose lichen in the family Umbilicariaceae, discovered on steep rock faces of old lava flows in California and Oregon, USA. This species is distinguished by the unique shape of its ascospores and its DNA sequence, which does not closely relate to any known species within its family.

Sinuicella is a fungal genus in the family Peltigeraceae. It is a monotypic genus, containing the single species Sinuicella denisonii. Both the genus and species were described as new to science in 2021 by Daphne Stone, Bruce McCune, and Jolanta Miądlikowska. The type specimen was collected by the first author from Polk County, Oregon (USA), where it was found growing on the soil. It is only known to occur in the region of the type locality. The lichen has a minute fruticose (bushy) grey to almost black thallus. The photobiont partner is a member of the cyanobacterial genus Nostoc. The genus

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Physcia rhizinata is a species of corticolous (bark-dwelling), lichenized fungus in the family Physciaceae. It is a "typically fertile species lacking asexual propagules" commonly mistaken for P. stellaris due to their physical similarities. It has a close evolutionary relationship with P. occidentalis despite being morphologically dissimilar. Physcia rhizinata is only known to be found in California. At least one specimen has been located in a canyon of the South Cow Mountain OHV Management Area owned by the Bureau of Land Management in a canyon live oak forest.

Physcia occidentalis is an obligately saxicolous lichenized fungus in the family Physciaceae that reproduces through the process of fragmentation, "primarily through the production of largely terminal blastidia". It occurs in a multitude of locations, all the way from British Columbia to California, but has also been seen in Colorado, primarily in forest environments. It is very similar to Physcia rhizinata and they have been confused for each other before.

Hypogymnia tenuispora is a rare species of foliose lichen in the family Parmeliaceae. Found in China's Yunnan province, it is characterised by its uniquely narrow ascospores and crowded lobes, which help distinguish it from other similar Hypogymnia species.

Hypogymnia saxicola is a rare species of foliose lichen in the family Parmeliaceae. Found in Yunnan and Sichuan provinces of China, it forms delicate cushions on mossy rocks in subalpine regions. It is characterised by its slender, glossy brown lobes and unique chemistry.

Hypogymnia pseudocyphellata is a rare species of foliose lichen in the family Parmeliaceae. Found only in the Chinese Himalayas, it was described as a new species by Bruce McCune and Erin Martin in 2003. The type specimen was collected from the Tian Chi alpine lake in Shangri-La City (Yunnan), at an elevation of 3,750 metres (12,300 ft). Here it was found growing on the bark and wood of fir. The lichen is characterized by the presence of whitish pseudocyphellae on the tips of the lobes (unusual for the genus Hypogymnia); rimmed holes; lobes that are narrow and separated; and a complex

Hypogymnia pendula is a rare species of foliose lichen in the family Parmeliaceae. It is characterised by its pendulous (hanging) growth form and distinct chemical composition.

Hypogymnia papilliformis is a rare species of foliose lichen in the family Parmeliaceae. Found in China and the Russian Far East, it was formally described as a new species in 2015 by Bruce McCune, Svetlana Tchabanenko, and Xin Li Wei. The type specimen was collected by the second author in the Lazovsky Nature Reserve (Primorsky Krai, Russia) at an altitude of 600 m (2,000 ft); here, in a mixed conifer–broadleaved forest, it was found growing on Korean pine (Pinus koraiensis). The lichen has also been recorded from a mixed forest in the mountains of Shaanxi Province in China, at an altitude