Eastwood's Fiddleneck: Amsinckia eastwoodii (Synonym: Amsinckia intermedia var. eastwoodiae)
Common Fiddleneck: Amsinckia intermedia (Synonyms: Amsinckia intermedia var. echinata, Amsinckia menziesii var. intermedia)
Common Fiddleneck, Small-flowered Fiddleneck: Amsinckia menziesii (Synonyms: Amsinckia menziesii var. menziesii, Amsinckia micrantha)