Possible Clues:

• Spherical fungus
• The Critic at a dance is 1
• Fungus releasing a cloud of spores when mature
• Large mushroom
• It's a drag, having slug in fungus
• Inflated publicity, circle's given to fungus
• Blow around for some fun with Gus
• Blow around what's white in the grass
• Blow round the fungus, White
• Round fungus that produces a cloud of dark spores when disturbed