Cortaderia is a genus of plants in the Poaceae or grass family of plants.

All current species included in the Cortaderia genus are native to South and Central America, ranging from the Patagonia region of southern Chile and Argentina, to Costa Rica. For many years, five species native to New Zealand were included in the genus, but since 2011 these have been since reclassified into the genus Austroderia containing only species native to New Zealand.

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