[]: 20
[Name]: Snyder Middleswarth Natural Area
[Image]:
[Date]: 1967
[Location]: 40°48′36″N 77°16′59″W / 40.81°N 77.283056°W / 40.81; -77.283056 (Snyder Middleswarth Natural Area)
[County]: Snyder
[Ownership]: public/state Bald Eagle State Forest
[Description]: A hemlock, pine, and oak forest located on 500 acres (202 ha).[]: 26
[Name]: Titus and Wattsburg Bogs
[Image]:
[Date]: 1977
[Location]: 41°56′36″N 79°45′47″W / 41.943388°N 79.763107°W / 41.943388; -79.763107 (Titus and Wattsburg Bogs)
[County]: Erie
[Ownership]: private/nonprofit
[Description]: A peatland of 125 acres (51 ha) located near the shore of Lake Erie.[]: 25
[Name]: Tionesta Scenic and Research Natural Areas
[Image]:
[Date]: 1973
[Location]: 41°38′42″N 78°56′28″W / 41.645°N 78.941°W / 41.645; -78.941 (Tionesta Scenic and Research Natural Areas)
[County]: Warren McKean
[Ownership]: public/federal Allegheny National Forest
[Description]: 4,131 acres (1,672 ha) of old growth forest on the Allegheny Plateau.[]: 2
[Name]: Box Huckleberry Site
[Image]:
[Date]: April 1967
[Location]: 40°24′22″N 77°10′26″W / 40.406111°N 77.173889°W / 40.406111; -77.173889 (Box Huckleberry Site)
[County]: Perry
[Ownership]: public/state Tuscarora State Forest
[Description]: A 10-acre (4.0 ha) natural area which preserves a rare colony of box huckleberry over 1,000 years old.[]: 18
[Name]: Reynolds Spring and Algerine Swamp Bogs
[Image]:
[Date]: 1974
[Location]: 41°33′03″N 77°29′51″W / 41.550902°N 77.497481°W / 41.550902; -77.497481 (Reynolds Spring and Algerine Swamp Bogs)
[County]: Tioga Lycoming
[Ownership]: public/state Tioga State Forest
[Description]: Contains two bogs of 1,302 acres (527 ha) and 84 acres (34 ha), which are surrounded by thick oak and pine groves.[]: 16
[Name]: Nottingham Park Serpentine Barrens
[Image]:
[Date]: 2009
[Location]: 39°44′26″N 76°02′21″W / 39.740507°N 76.039112°W / 39.740507; -76.039112 (Nottingham County Park)
[County]: Chester
[Ownership]: private/nonprofit
[Description]: A 651-acre (263 ha) county park on one of the largest outcrops of serpentine in the eastern US, which creates a savanna-like habitat with a number of unusual flora.
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