After looking through the lot of 'em, I'd recommend reclassifying the following as hazards:
Amber Lotus [Savage Coast Monstrous Compendium Appendix]
Chromatic Mold [Monstrous Compendium Annual Volume Four]
Deep Mold [Monstrous Compendium Annual Volume Two]
Lure Lichen [Adventure Pack I (I13)]
Purple Lichen [Dungeon #81]
Razorweed [Dungeon #1]
Razorvine [Planescape Monstrous Compendium Appendix II]
And these two probably fall more under "Alchemical Items/Equipment":
Moonflower [Night Howlers (PC4)]
Wolfsbane [Night Howlers (PC4)]
A few others could possibly go either way, but we can review 'em on a case-by-case basis as their conversion number is called.
