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Schistidium confertum differs from other North American Schistidium Bruch & Schimp. species in having ovate upper leaves with long to short, broad, hyaline hair-points; cupulate capsules (length to width ratio 1:1); a well-developed peristome; and small spores (10–12 µm). The species is reported new to Maine where it was collected on rocks along and in the Allagash and St. John Rivers. A key to the 14 species of Schistidium in Maine is provided.
Listed by county are the currently known species of liverworts and hornworts collected in Nebraska. The list builds on the work of earlier collectors, especially that of Walter Kiener for the period 1936-1953. More recent collections include those by Locklear, Rolfsmeier, Steinauer, Sutherland, and Wikel. To date, hornworts and liverworts have been found in 67 of the state's 93 counties. The checklist provides county and collection information and brief notes on habitat preferences and diagnostic characters.
Orthotrichum shevockii and Orthotrichum pallens are new to the flora of Oregon. Recently discovered in Klamath County, these two species were found very near one another on basaltic outcrops at Bryant Mountain on the Oregon and California border. Species descriptions and site details are provided.
Coastal areas around the globe are threatened with sea-level rise (SLR). Many of these areas support coastal forests, and determining the threat is complicated by wind patterns and sea floor and shoreline variability, beyond simple elevational concerns. Lichens can be used as indicators of SLR at site specific locations. Developing vegetative indicators of SLR could assist land managers, municipalities, and homeowners in evaluating the risk of building homes, roads, and other structures in some locations. The absence of salt sensitive lichen species can be an indicator of SLR potential. We base this on lichen distribution patterns within two Florida state parks – one a barrier island, the other on the nearby mainland. Rapidly colonizing lichen taxa with asexual reproductive structures are poor indicators of SLR, because of their ability to quickly recolonize following storm events and other disturbances. Knowledge of lichen distribution patterns in combination with reproductive traits help facilitate the development of lichen indicator guidelines. We have learned that Coccocarpia palmicola, Dirinaria picta, and Heterodermia albicans do not appear to be salt-tolerant but have abundant asexual propagules and recolonize rapidly. Sites lacking salt sensitive lichens such as Bulbothrix laevigatula, Cryptothecia rubrocincta, Leptogium cyanescens and Parmotrema rampoddense could indicate areas that are at high risk to SLR at a fine scale. Such areas should be avoided for the construction of homes, roads, and other structures. Lichens make good indicator species and could help guide management of coastal areas in Florida and much of the U.S. southeast Coastal Plain.