1. Department of Natural History; Royal Ontario Museum; Toronto ON M5S 2C6 Canada
2. Department of Ecology and Evolutionary Biology; University of Toronto; Toronto ON M5S 3B2 Canada
3. P. O. Box 57 Roosevelt NJ 08555-0057 USA
4. Departement Bryophyten en Thallophyten; Nationale Plantentuin van België; Domein van Bouchout 1860 Meise Belgium