Фотография: http://atomic-plant.de
Фотография: OZ Lithops
Фотография: Sylvain Burgaud
Источники:
http://atomic-plant.de/bilder/Lithops/L%20hallii%20C90.html
http://ozlithops.com/?controller=product&path=14&product_id=164
https://www.flickr.com/photos/14732695@N06/45123307934/
https://www.flickr.com/photos/14732695@N06/45784556132/
Продажа семян:
http://atomic-plant.de/start%20eng.html
http://ozlithops.com/?controller=product&path=14&product_id=164