1a. Moss develops multiple capsules from the same point on         the stem. —–Dicranum polysetum.

1b. Moss only develops a single capsule. —–2.

2a. Leaves are fairly fragile and many leaves are missing their          tips due to being broke off. —–Dicranum viride.

2b. Leaves are not fragile and are generally complete. —–3.

3a. The stem is covered in what appears to be white fuzz.              —–Dicranum scoparium.

3b. Stem is not covered in white fuzz. —–4.

4a. Moss grows in tight tufts with leaf tips generally facing            the same direction. —–Dicranum fulvum.

4b. Moss grows in loser tufts and leaves generally face in all            different directions and are held closer to the stem.                     —–Dicranum montanum.