Du coup j'ai fait une petite recherche sur l'aspect d'autres carnosum.......

http://images.google.fr/imgres?imgurl=http://site.voila.fr/MagicChris/Pelargonium/pelargonium_carnosum_JBL.jpg&imgrefurl=http://site.voila.fr/MagicChris/Pelargonium/pelargonium_carnosum.htm&h=378&w=283&sz=21&hl=fr&start=2&tbnid=O98tjcUqHKrO0M:&tbnh=122&tbnw=91&prev=/images%3Fq%3Dp%25C3%25A9largonium%2Bcarnosum%26gbv%3D2%26hl%3Dfr

Regardez celui-ci :
http://images.google.fr/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Pelargonium_carnosum_1.jpg/545px-Pelargonium_carnosum_1.jpg&imgrefurl=http://commons.wikimedia.org/wiki/Image:Pelargonium_carnosum_1.jpg&h=600&w=545&sz=144&hl=fr&start=3&tbnid=woatC8EmX7HwGM:&tbnh=135&tbnw=123&prev=/images%3Fq%3Dp%25C3%25A9largonium%2Bcarnosum%26gbv%3D2%26hl%3Dfr

et celui ci :

http://images.google.fr/imgres?imgurl=http://pics.davesgarden.com/pics/palmbob_1136581862_760_tn.jpg&imgrefurl=http://davesgarden.com/guides/pf/b/Geraniaceae/Pelargonium/none/cultivar/0/&h=100&w=100&sz=3&hl=fr&start=24&tbnid=6w1WgbvwuyO8XM:&tbnh=82&tbnw=82&prev=/images%3Fq%3Dp%25C3%25A9largonium%2Bcarnosum%26start%3D20%26gbv%3D2%26ndsp%3D20%26hl%3Dfr%26sa%3DN