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Carex pennsylvanica

Common Name(s)
Oak sedge
Flowering Time
late March to April
Fruit/Seed Maturation Sign
Bracts around perigynia turn rust brown along midrib; persistent bracts from male flowers are deep rust/brown
Fruit/Seed Collection Dates
Early to late May

Seed output low (Barkely 1986, Gleason and Cronquist 1991).

Transplants in an Iowa field study had 61% survival after 7 years (Mottl et al. 2006), although it was only 8% after seven years in a study from Michigan (DeJong et al. 2017).

Stongly stoloniferous (Mackenzie 1940, Fernald 1950); vegetative spread high (Barkely 1986, Gleason and Cronquist 1991, Mottl et al. 2006), suggesting that transplanting could be a successful method of re-introduction.

Successul seed germination involved removing the perigynium (bladder like sac that adhers to the hard pericarp of the achene), after-ripening (dry storage), followed by cold stratification, and exposure to light (McGinnis and Meyer 2011). 


Oak sedge (Carex pennsylvanica)

Seed Cleaning
Remove perigynia
Unknown requirements
Restoration Potential