• WordNet 3.6
    • n Calystegia climbing or scrambling herbs: bindweed
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Century Dictionary and Cyclopedia
    • n calystegia A former genus name of several plants of the family Convolvulaceæ, now referred to Convolvulus.
    • n calystegia [lowercase] A plant of this group. The species are annual or perennial herbs, sometimes suffrutescent, twining, trailing, erect, or ascending, with filiform creeping rootstocks. The commonest cultivated plants of this group are the California rose (Convolvulus Japonicus) and Rutland beauty (C. sepium), both herbaceous perennial twiners with pink or white flowers, resembling in form those of the morning-glory.
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In literature:

Calystegia pubescens flore-pleno, 48.
"Hardy Perennials and Old Fashioned Flowers" by John Wood