Today’s entry was again written by Bryant, who writes:
Once again, a big thank you to Robert Klips (Orthotrichum@Flickr) for an image; Nowellia curvifolia was submitted via the Botany Photo of the Day Flickr Pool, and is the subject for the second post in the series on liverworts.
Nowellia curvifolia is a member of the Cephaloziaceae and is well-distributed throughout the Holarctic region and Central America. It can often be found on rotting logs in moist woodlands, and can sometimes be identified from a distance due to the reddish tone that develops in mature leaves. Up close, the leaves are deeply concaved and sail-shaped, converging to two fine hair-like tips. At the base of each leaf is a small water-sac. In Nowellia curvifolia these sacs seem to be for water-storage; however, water-sacs found in other species may develop a mechanism that can effectively trap microorganisms within the water-sac, suggestive of carnivory. See: Hess et al. 2005. Evidence of zoophagy in a second liverwort species, Pleurozia purpurea. The Bryologist. 108(2):212-218.