Wikibooks is dedicated to developing and disseminating free, open content textbooks and other classroom texts. We currently host 5666 textbook modules, in various stages of development, from those needing a lot of work to those that are nearly perfect.
a research and learning project about flowering plants. The research component is aimed at creating a language for discussing the bloom times of wildflowers and other plants that is neutral in respect to climate, region, and hemisphere.
M. Hepp, D. Bachlechner, and K. Siorpaes. WikiSym '06: Proceedings of the 2006 international symposium on Wikis, page 143--144. New York, NY, USA, ACM, (2006)