fire lily
noun
1Any of various lilies with orange or red flowers, especially Lilium bulbiferum of southern Europe, which has bright orange flowers.
2Any of the bulbous perennial plants of the genus Cyrtanthus (family Amaryllidaceae) of central and southern Africa, which tend to produce their flowers (often red or orange) after bush fires.
Origin
Early 19th century; earliest use found in Anthony Willich (fl. 1778–1802).