Previous knowledge. Lonicera caerulea subsp. edulis is a deciduous shrub native to northeast Asia (Ohba 1993). In portions of its native range Hulten (1930) and Ohba (1993) described it as common in meadows and moderately shady forests. This subspecies is cultivated for its glaucous, blue, edible "berries," which are actually two fleshy ovaries that are so tightly enclosed by a fleshy cupule of bractlets that they appear to be connate over their full length (Rehder 1903); these are suitable for jam and jelly (Whealy and Demuth 1993).
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