Showing the kind of H. serrata influence we see in Nikko Blue in its soft, serrate foliage, Nachtigall (Nightengale), is the richest in color in the Teller Series, coloring a deep, velvety midnight blue to indigo on the sterile flowers which are quite large, contrasting with the mass of large, pale buds of the fertile florets. Wdenswill, 1979. |
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