Related Clues:

• Bracken, for one
• Spanish ___
• Peat source
• Trunk growth
• House plant
• Velvety growth
• Seedless plant
• Rolling-stone reject
• See 15-Down
• NFL pass catcher Randy
• Lichen's kin
• See 103-Across
• Water-loving houseplant
• Green growth
• Adder's-tongue, e.g.