i came into this same problem in a duel but its very simple TBH
http://yugioh.wikia.com/wiki/Semi-Nomi
now this has cause a lot of confusion which is why konami has fixed the card text to mansters with the text
this card can only be special summoned by
means
this card must first be special summoned by
to make it more understandable
after you meet the requirements of a semi-nomi you can reborn it or even if it banish you can DDR it but if a semi-nomi is returned to ahnd or deck after it was SS correctly you will ahve to summon it by its effect again before you cna summon it by other means also most synchros, XYZ, and fusions ar semi-nomis are semi-nomis which is why if you summon stardust by road and it goese to grave you cant monster reborn it or why you cant DDR a stardust dragon thats been banished by malefic stardust