Oenothera oakesiana (A.Gray) J.W.Robbins ex S.Wats. & Coult.
Oakes' evening primrose, cross-shaped evening primrose
Oakes' evening primrose, cross-shaped evening primrose
September 12,
Front dune, Ellisville, Plymouth
Subterminal appendages on sepals (appendages may be of variable length: from 0.5 mm to about 0.5 cm); glandular hairs visible on pedicel.