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A total of 34 species representing 22 genera of lichens were found during a one-day foray at Fort Macon State Park, North Carolina; collections focused on the fort and surrounding maritime forest. This checklist supplements that of the nearby Theodore Roosevelt Natural Area (managed by the State Park), which was surveyed during the 12th Tuckerman Workshop in 2003. Noteworthy is the abundance of Diploschistes actinostomus and the recently described Xanthomendoza weberi (=Xanthomendoza fulva auct.), both found on capstones throughout the fort.
Recent floristic and herbarium work has revealed four species of the Bryaceae new to North America north of Mexico. Brachymenium exile is reported from southern Florida, while Brachymeniun vinosulum is reported from springs in Arizona, Colorado and New Mexico. Bryum mildeanum is reported from Maine and the mountains of Colorado, while Bryum veronense is reported from Colorado in a semiarid site in the Front Range.
Fens that formed over acidic geothermal springs in Yellowstone National Park support species of Sphagnum previously unknown or rare in the Rocky Mountain region of the US. These taxa are more common in boreal regions of North America. During our research on the biodiversity of fens in Yellowstone we identified four species of Sphagnum new to the state of Wyoming: Sphagnum lindbergii Schimp. in Lindb., Sphagnum riparium Ångstr., Sphagnum fimbriatum Wils. & Hook. in Hook., and Sphagnum capillifolium (Ehrh.) Hedw. Acidic geothermal fens are similar to iron fens reported in other parts of the Rocky Mountains; they support many rare and disjunct Sphagnum species. Acid geothermal fens and iron fens appear to function as links between floras of the southern Rocky Mountains and boreal regions.
Aspen are thought to be declining in this region due to a combination of fire suppression, grazing and wildlife management practices, and potentially cool/wet climates of the past century which favor advancing conifer succession. Many scientists are concerned that aspen's related species may also be losing habitat, thereby threatening the long-term local and regional viability of this important community. To date, few studies have specifically examined the role of aspen's epiphytic lichen community. This paper presents basic community research describing the application of Indicator Species Analysis for lichens growing on aspen stems in the central Rocky Mountains of North American. Results show unique lichen assemblages between conifers and aspen — the dominant hardwood of mid-elevations in this region.
Ninety-nine taxa in forty-five genera are reported from the San Jacinto Wilderness Area in the San Jacinto Mountains, CA. Two lichen species, Lecanora mughicola Nyl. and Lepraria borealis Loht. & Tønsberg, and one lichenicolous fungus, Stigmidium squamariae (de Lesd.) Cl. Roux & Triebel, are reported new for California.