The Silver Fern railcars appeared in stainless steel. For its entire existence, it was operated with Silver Fern railcars. The "koru" symbol is inspired by the shape of an unfurling silver fern frond. New service flags were proposed for New Zealand following the Lockwood Silver Fern Flag. Silver Fern Farms Limited is a New Zealand multinational meat company. Some alternative flags for New Zealand, such as the silver fern flag, utilise the fern. Her aunt Te Aroha Keenan is a former Silver Fern. Silver Fern railcars; the latter remaining in service between Auckland and Wellington until 1991. Other endemic vegetation includes wild mango, silver fern, jamun and "arjun". The silver fern flag is a popular unofficial flag of New Zealand. Silver fern fronds appear on the coat of arms of New Zealand. Their campaign used a stylised silver fern flag designed by Cameron Sanders. The Silver Fern is also the name of a class of railcar.