Oclemena nemoralis

Bog Aster, aster des tourbières

Oclemena nemoralis (Ait.) Greene is native to Sphagnum bogs and very poor fens, edges of floating bogs, damp sandy shores, acidic or peaty lakeshores, pond margins, cracks in acidic, barren rocks in perhumid areas (Nfld.) of boreal northeastern North America from Ontario to Newfoundland south to Maryland ().  It may be extirpated in Delaware.  The species has been incorrectly included in Aster,ÌýEucephalusÌý²¹²Ô»åÌýGalatella.  The species is diploid (2n=18).  The species hybridizes with O. acuminata (F1 = O. ×blakei).

Oclemena nemoralis range map

Last updated 29 March 2025 by J.C. Semple

© 2025 J.C. Semple, including all photographs unless otherwise indicated

Oclemena nemoralis, habitat, 11087, Ontario
Oclemena nemoralis, shoot, 11087, Ontario
Oclemena nemoralis, heads, cult WAT
Oclemena nemoralis, head, 11087, Ontario
Oclemena nemoralis, fruit, Oldham et al 21346 WAT
Oclemena nemoralis, glandular fruit body, Oldham et al 21346 WAT

1-6. Oclemena nemoralis. 1-2. Shoots, Semple 11087, Algoma Dist., Ontario. 3. Heads, cultivated at WAT. 4. Head, Semple 11087. 5-6. Fruit and fruit body, Oldham et al 21346, Victoria Co., Ontario.Â