Blake's Bog Aster
Oclemena ×blakei (Porter) G.L. Nesom is the F1 hybrid between O. acuminata and O. nemoralis. Brouillet (2006 FNA) summarizes the literature on this well studied hybrid. It's leaves are morphologically intermediate between the broad oblanceolate leaves of O. acuminata and the narrow elliptic-oblong leaves of O. nemoralis. Like these hybrids are diploid (2n=18).
Brouillet, L. 2006. Oclemena Greene. pp. 78--81. In Flora North America Editorial Committee, North America. Vol. 20. Asteraceae, Part 2. Astereae and Senecioneae. Oxford University Press, New York.
Last revised 11 May 2025 by J.C. Semple
© 2025 J.C. Semple, including all photographs unless otherwise indicated
1-2. Oclemena ×blakei , Semple & B. Semple 11509, Queens Co., Nova Scotia. 1. Clones at edge of woods. 2. Inflorescence.