Osteospermum - Wikipedia - http://en.wikipedia.org/wiki/Osteospermum
An account of the genus Osteospermum, with a list of species and advice on cultivation. |
PBSWiki - Ornithogalum - http://www.pacificbulbsociety.org/pbswiki/index.php/Ornithogalum
Notes on the cultivation of the different groups within the genus Ornithogalum, with photographs of various species and hybrids uploaded by members of the Pacific Bulb Society. |