I have a glut of tested Salvia glutinosa seeds. If anyone is interested leave a message here and I'll get back to you.
Also (untested) seeds for;
Penstemon smallii
Lobelia siphilitica (alba)
Galtonia candicans
Impatiens balfourii
Not after anything in return, although I am on the lookout for interesting Tricyrtis seed for which I have fresh Albuca shawii seed to trade.