Related Clues:
- Green shade
- Growth on the north side of trees
- Long Island town, site of the Brookhaven Laboratory
- Shade of green
- Famous Hart
- Writer Sinclair
- Rolling stones lack it
- Author Sinclair
- Bryologist's study
- Forest growth
- Symbol of inactivity
- Site of Brookhaven National Laboratory
- Playwright Hart
- Tree-hugger?
- It reproduces by spores