From "Revue horticole", October 1, 1860, p. 512, fig. 103: Blooms of Clematis erecta flore pleno at natural size Courtesy of Biodiversity Heritage Library
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From "Revue horticole", October 1, 1860, p. 512, fig. 103: Blooms of Clematis erecta flore pleno at natural size
Courtesy of Biodiversity Heritage Library