Jungle Potion herbs not giving xp
http://web.archive.org/web/20070917134834/http://www.tip.it/runescape/index.php?rs2item_id=6733 http://web.archive.org/web/20070819001400/http://www.tip.it/runescape/index.php?rs2item_id=2058 http://web.archive.org/web/20070824093701/http://www.tip.it/runescape/index.php?rs2item_id=1314
2007 sources for at least 3 of the 5 jungle potion herbs (snake weed, sito foil, volencia moss) say they should give 2.5xp (5.625xp here) upon cleaning. Modern sources also say all 5 of these herbs should give experience and that there have been no recorded changes to them since their introduction, so I would assume all have given cleaning experience since forever