Ivy Journal
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Graf, Alfred Byrd. 1957a. Hedera helix 'Meagheri' ['Green Feather'] p. 543; ill p.
147. In: Exotica. Roehrs Company. Rutherford, New Jersey. Graf, Alfred Byrd.
1957b. Hedera helix 'Shamrock'. p. 544; ill. p. 1 47. In: Exotica. Roehrs Company.