• WordNet 3.6
    • n epicalyx a group of bracts simulating a calyx as in a carnation or hibiscus
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Century Dictionary and Cyclopedia
    • n epicalyx In botany, the outer accessory calyx in plants with two calyces, formed either of sepals or bracts, as in mallow and potentilla.
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Chambers's Twentieth Century Dictionary
    • n Epicalyx ep-i-kā′liks an external or accessory calyx outside of the true calyx, as in Potentilla.
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In literature:

In some Rosaceous plants an epicalyx is present, due to the formation of stipulary structures by the sepals.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5" by Various