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Twenty-eight lichens are reported new to Crawford County, Pennsylvania, providing the most recent data on lichen diversity in the county. Previously, 20 lichens were collected in the early 1900s, of which three were confirmed in this study. The lichens identified at all sampling sites are Candelariella efflorescens, Cladonia ochrochlora,Flavoparmelia caperata, Lepraria finkii, Physcia millegrana, Phaeophyscia pusilloides and Phaeophyscia rubropulchra, all of which are common in northeastern North America.
Leptogium insigne has been discovered in andine parts of Ecuador, far away from its type locality in coastal Oregon, USA. Its generic position is reevaluated and Arctomia borbonica is found to be a synonym, and indeed the species belongs in the Arctomiaceae where further studies are necessary to establish the generic structure. The distribution pattern is unusual being closest to that of the circumpacific Leioderma sorediatum, though not yet found in Southeast Asia and New Zealand. It appears to be an ancient element in the mycota in this region, probably originating in Gondwanaland.
Eight populations of Parmotrema species from the Shimek State Forest, Iowa (Croton and Lick Creek Units) were selected for study. Samples of Parmotrema perlatum, P. hypotropum, P. reticulatum, and P. austrosinense were collected and assessed for their concentrations of N, S, P, K, and Fe. We hypothesized that populations near the forest edge might have higher concentrations of these elements. There were no populations of this genus at the forest edge, and no significant differences in elemental concentrations between samples from the middle of the forest or near the forest edge. Two reasons are hypothesized to explain these results: forest age and forest density.
Systematic documentation of mosses is required for restoration and conservation programmes, because they constitute an important component of biodiversity. The present study is an attempt to inventory mosses of a few sites of the twin districts of Rajouri and Poonch. A total of 21 mosses belonging to 7 orders, 11 families and 16 genera are reported with the family Pottiaceae being the most speciose. In addition, most of the taxa are epilithic.
During field surveys in the Lower Foothills region of Lesser Slave Lake, Alberta, we collected the first Canadian record of the resinicolous calicioid fungus Chaenothecopsis oregana Rikkinen. The specimen was collected from balsam fir (Abies balsamifera) resin and resin-impregnated wood in an old growth forest. We present the first scanning electron micrographs of this species. As currently documented, the species has a disjunct distribution (Europe and western North America), but it was hypothesized to be circumboreal, at least historically. As this was the sole resinicolous specimen found during 20 hours of searching by four lichenologists, it is clear more field surveys are required to document the range of calicioid species. Finally, based on public engagement through social media and a public lecture, with the purpose of arousing interest in these overlooked species, we propose the common name “Resin Whiskers” for this species.
The Checklist of Pennsylvania Mosses lists 443 moss taxa from Pennsylvania, but only 13 from Jefferson County. The authors collected an additional 79 taxa from the county. Mosses of interest include Bryum dichotomum, B. pallens, Dicranodontium denudatum,Helodium elodioides, Philonotis longiseta, Racomitrium aciculare, Schistidium viride, andTortula obtusifolia. Currently, 92 moss taxa have been verified from Jefferson County, Pennsylvania.
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