Modifiers matching cactus:

• indigenous,
• young,
• diverse,
• small,
• smaller,
• psychoactive,

Simple categories matching psychoactive:

• chemical,
• food,
• amine,
• drug,
• substance,
• pharmaceutical,
• benzodiazepine,
• agent,
• effect,
• medication,
• plant,
• medicine,
• peptide,
• property,
• constituent,
• cactus,
• alkaloid,
• stimulant,
• herb,
• ligand,
• compound,
• intoxicant,