The WIS herbarium has ca. 1000 specimens of lichenicolous fungi distributed across 406 species. Fifty-nine of the specimens are types, of which fourteen are isotypes and seven holotypes.

Moss sporophytes are physically attached to and dependent on the leafy gametophyte through their entire life. During early development, the sporophyte apex is covered by the calyptra, a cap of gametophytic tissue which protects the developing capsule. The aim of this study is to examine the influence of the calyptra on sporophyte transpiration rates in mosses. We used two laboratory-grown species with different sporophyte and calyptra sizes for this study: Funaria hygrometrica Hedw. and Physcomitrium pyriforme (Hedw.) Hampe. When the calyptra was removed from the sporophyte apex, there were significantly higher rates of sporophyte transpiration compared to individuals with the calyptra present. These results provide evidence supporting the importance and influence of the gametophyte calyptra on the movement of water in moss sporophytes. Changes in transpiration, and thus the pull of water and nutrients from the gametophyte into the sporophyte, may also have downstream effects on sporophyte reproductive output.

The moss Exobryum fragilicuspis (Broth.) R.H.Zander is reported from the Rocky Mountains of Alberta, Canada, in Jasper National Park. The species is synonymous with several previously recognized taxa, including Didymodon fragilicuspis Broth., Didymodon gaochienii B.C.Tan & Y.Jia, Didymodon murrayae Otnyukova, and Vinealobryum murrayae (Otnyukova) R.H.Zander. Exobryum fragilicuspis is distinctive in having specialized caducous propagules with barrel-shaped segments at the leaf apices. These detach readily and cause the apices of developed leaves to appear broken. Despite these distinctive features, the species is rarely reported in North America, where it was previously known from three sites in Alaska and British Columbia. The collection from Alberta is the most recent in 30 years in North America, and provides new insights into the species' distribution and ecology. Features of Exobryum fragilicuspis are compared to other related species from North America.

The bryophytes of El Malpais National Monument in west-central New Mexico were collected and inventoried. The study area is dominated by lava flows and tubes some of which form ice caves and fascinating moss gardens. These gardens contain disjunct bryophyte populations enabled by ice and cool year-round temperatures at cave entrances. A total of 110 bryophyte species were found including 95 moss species in 23 families, and 15 liverwort species in 10 families. Six of these bryophyte species are new state records for New Mexico. No hornworts were found. We review past work on bryophytes in this unique habitat, and present a short biography of Alton A. Lindsey. This is a fragile habitat and global warming may put it at risk.

Chenia leptophylla is reported new to North Carolina based on a single population in Harnett County. Selected locations of global distribution and all known state distribution within the U.S.A. are presented with commonly used synonyms. A brief description of newly discovered foliar rhizoids and phenological forms as observed in North Carolina plants is included.