- Lebanon State Forest, NJ pine barrens. Just south of Woodmansie Rd. near a bridge over the McDonalds Branch, trail located 100 m N. of a cedar swamp; trailhead on same road as bridge. 50 km E. of Philadelphia1
- Lebanon Twp, fen at corner of Newport Rd & Boy Scout Rd.1
- Lindenwald1
- Lindenwold Bog. Lindenwold.1
- Locktown1
- Locust Grove.1
- Lodi1
- Loharray Creek, Hornerstown.1
- Madison1
- Manahawkin1
- Manchester1
- Manchester, Margin of Manchester Pond (Horicon Lake, SW of Lakehurst)1
- Manchester.1
- Mantua, Gloucester Co.1
- Manumuskin, about 1 m. E1
- Maplewood1
- Martha's Pond, near Martha's Furnace, circa 2 miles north of Harrisville ruins1
- Martha, southeast of Wading River, just south of Buck Run Creek, north of Martha's Furnace Bog1
- Maurice River at Landis Ave, Vineland.1
- Maurice River at intersection of Rtes 55 and 5521