Фотография: http://atomic-plant.de
Фотография: American Hedgehog Nursery
Фотография: Sylvain Burgaud
Источники:
http://atomic-plant.de/bilder/Conos/C%20uviforme.html
https://www.ahhnursery.com/index.php?route=product/product&path=25_69_67&product_id=159
https://www.flickr.com/photos/14732695@N06/44697201082/
Продажа семян:
http://atomic-plant.de/start%20eng.html
https://www.ahhnursery.com/index.php?route=product/product&path=25_69_67&product_id=159