Place
- Loch Raven (S side)1
- Luquillo National Forest. Sierra de Luquillo. Pico de Este road near the gate. Edge of elfin forest.1
- Mackenzie1
- Mackenzie Mountains, Carcajou Range "Coral Peaks"1
- Macon1
- Mainus River Gorge, west of Havemeyer Falls, west of main trail1
- Manistee Twp.1
- Maricao1
- Mawphlang1
- McKean1
- Menominee1
- Michipicoten Harbour1
- Moist ravine above El Potrero Camp, Chiriqui Volcano1
- Montmorency1
- Morona Santiago1
- Mt. Adams1
- Mt. Adams, near summit1
- Mt. Jefferson; Site 2; along ridge (summit) connecting Mt. Jefferson & Mt. Clay1
- Mt. Jefferson; Site 51
- Mt. Kaala1