Cano Cristales, river with endemic red water plant, Macarenia clavigera, Serrania de Macarena National Park, Meta, Colombia Cao Cristales, river with endemic red water plant, Macarenia clavigera, Serrania de Macarena National Park, Meta, Colombia PUBLICATIONxINxGERxSUIxAUTxONLY Copyright: ThomasxMarent 11980879imago images/Ardea