Bryum chryseum Mitt, is reported new to the moss flora of North America north of Mexico from three counties in California. The first new record was found in the Mayacmas Range of eastern Mendocino County and more recently it was found in the San Joaquin River watershed in Fresno and Madera Counties. Predominantly a species of the Neotropics, it is also known from Chile, where a Mediterranean-type climate exists very similar to that of California. An illustration of the species is included.

This paper reports on the lichen flora of the San Juan-Rio Grande National Forest located in southwestern Colorado. This survey is based on extensive collections made between 1993 and 1997, as part of an air quality bio-monitoring program and baseline. Southwest Colorado is a biologically diverse and habitat rich part of the state. Community types include arid, low-elevation shrublands, riparian communities, mid-elevation woodlands, upper elevation coniferous forests, and extensive alpine tundra. Lichen communities along the Colorado Front Range and adjacent portions of the Rocky Mountains have been studied for more than a half century; however, lichen communities in the western half of the state and particularly the southwest corner of the state are largely unknown. Based on our research we have identified a total of 316 species in 108 genera from 32 sites in southwest Colorado. Thirty-three species are reported as new records for the state; with a single new record for North America. The lichen flora for this region is diverse and well developed. Species representing all growth forms and substrates are reported. The flora is dominated by foliose species (44%), followed by crustose taxa (35%), squamulose species (14%), with fruticose species at 7%. Species were collected from all habitats and substrates including soil/moss, rock, bark/lignum, and other lichens (with 45% on rock, 25% on bark/lignum, 29% on soil/moss, and 1% on other lichens). The diversity of lichen species reported for this area reflects the complexity and variation in habitat and environmental parameters characteristic of southwest Colorado. Based on preliminary comparisons with adjacent lichen floras, in western New Mexico and southeastern Utah differences seem to be related to: 1) variation in collection intensity; 2) differences in habitat types; and 3) variation in the frequency of monsoonal summer rains.

Bryophytes collected from 101 red maple trees in western Pennsylvania included 37 moss species in 17 families and three liverworts in three families. Most frequently collected were Orthodicranum montanum and Platygyrium repens.

Bacidina ramea is reported here for the first time growing on Equisetum telmateia.

The following species are reported for the first time from Pennsylvania: Chaenotheca chrysocephala, Cladonia brevis, C. crispata, C. farinacea, C. floridana, Cystocoleus ebeneus, Diplotomma alboatrum, Fuscidea recensa, Lecanora semipallida, Lecidea auriculata, Melanelia panniformis, M. sorediata, Mycoblastus sanguinarius, Parmelia omphalodes, Parmotrema gardneri, Phaeosporobolus alpinus, Porpidia contraponenda, Thrombium epigaeum, and Umbilicaria deusta. Modern populations of the following species are reported, and records of their historical occurrences are discussed: Cladonia atlantica, C. mitis, C. stellaris, Parmeliopsis hyperopia, and Porpidia soredizodes.

A collection of Phaeophyscia leana is reported from Hart County, Kentucky.

Forty-three lichens in twenty-six genera are recorded for East Anacapa as well as four lichenicolous fungi in three genera and one allied fungus.

Three lichenicolous fungi are reported new for North America: Lichenothelia renobalesiana, Opegrapha hellespontica, and Sclerococcum parmeliae.