Zimmermann Daniel Zimmermann 
Genus Rhipsalis [EPUB ebook] 

This e-book treats an unusual cactus. It tells us whether or not this genus has spines. It tells us which cactus species is native to Africa and Ceylon. It describes quite a few cacti that are native to Brazil. It tells us which species of Rhipsalis are endangered species. It gives a general description of the genus and gives information on many species.