hallo jürgen,
hier werden die zwei arten ziemlich minutiös auseinandergenommen:
http://www.google.de/imgres?imgurl=http://www.ambmuggia.it/forum/uploads/post-3-1215291566.jpg&imgrefurl=http://www.ambmuggia.it/forum/topic/6426-peziza-proteana-f-proteana/&usg=__hWVXun-ZkIzielJ6m9SCRWy6pXk=&h=544&w=800&sz=108&hl=de&start=68&zoom=1&tbnid=1Xrh-R1z9wPf8M:&tbnh=130&tbnw=173&ei=gkNbTuOoJ6KO4gSJl6SsBQ&prev=/search%3Fq%3Dpeziza%2Bproteana%26um%3D1%26hl%3Dde%26sa%3DN%26biw%3D1005%26bih%3D586%26tbm%3Disch&um=1&itbs=1&biw=1005&bih=586&iact=rc&dur=1592&page=6&ndsp=15&ved=1t:429,r:6,s:68&tx=67&ty=73
http://www.google.de/imgres?imgurl=http://www.ambmuggia.it/forum/uploads/post-3-1245622089.jpg&imgrefurl=http://www.ambmuggia.it/forum/topic/7006-peziza-petersii/&usg=__ynsb7bLBpXn5G6huubJ5JxN0uTs=&h=533&w=800&sz=88&hl=de&start=56&zoom=0&tbnid=trTHmBts7_6EvM:&tbnh=95&tbnw=143&ei=P0xbTvfjHIfZsgaa0-GhCw&prev=/search%3Fq%3Dpeziza%2Bpetersii%26um%3D1%26hl%3Dde%26biw%3D1005%26bih%3D586%26tbm%3Disch&um=1&itbs=1&iact=hc&vpx=744&vpy=279&dur=1713&hovh=95&hovw=143&tx=119&ty=34&page=5&ndsp=12&ved=1t:429,r:11,s:56&biw=1005&bih=586