Related Clues:

• Velvety ground cover
• Velvety tree hugger
• Velvety flora
• "The Jungle" author Sinclair
• Rock cover
• Matlike growth
• Terrarium growth
• Rolling stone's lack
• Tufted plant
• Sign of disuse
• See 43-Down
• Sphagnum, for one
• Forest undergrowth
• Rootless plant
• Rock growth