The fern, Arachniodes simplicior 'Variegata' is often called East Indies (Indian) Holly Fern, also Variegated Holly Fern. Variegated Leatherleaf Fern, Variegated Shield Fern.
It is an attractive fern with dark green fronds, with a yellow stripe in the midrib of each frond. It has long (2' or more) bare, upright stipes and the frond is often tilted at a 90°angle.
It is said to be hardy to Zone 6, but loses it's foliage during winter freezes. Mine will often retain their foliage until the temperatures fall below 15°F.
Link below.
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Here is a link that might be useful: Arachniodes simplicior 'Variegata'