ï~~26 THE MICHIGAN BOTANIST Vol. 50 NOTEWORTHY COLLECTIONS MINNESOTA Lonicera caerulea L. subsp. edulis (Turcz. ex Herder) Hult6n. (Caprifoliaceae). Sweetberry honeysuckle. Previous knowledge. Lonicera caerulea subsp. edulis is a deciduous shrub native to northeast Asia (Ohba 1993). In portions of its native range Hult6n (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). Also treated by some authors as a variety of L. caerulea or as a 0, species, sweetberry honeysuckle has apparently not been reported as a non-cultivated member of the flora in North America or elsewhere beyond its native range (Ran~ dall 2002). Bailey (1949) asserted that L. caerulea was naturalized in North America, but there do not appear to be specimen collections to support this. USDA NRCS (2010) indicated an Ontario record of L. emphyllocalyx, recognized by some (e.g., Ohwi 1965) as an old-world variety of L. caerulea, but that record seems to be based on material in cultivation (L. Brouillet, personal communication, 6 April 2010). Significance of the report. About 25 shrubs of L. caerulea subsp. edulis were observed in a woodland on the rural outskirts of Duluth, FIGURE 1. Vigorous first-year stem of Lonicera caerulea Minnesota, distributed irregusubsp. edulis, showing connate stipules and superposed lat- larly within a polygon of eral buds as they appear during the growing season. Photograph courtesy of Raymond G. Barnes. ~125 m2. The sweetberry
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