Tarweed Fiddleneck, Bugloss Fiddleneck: Amsinckia lycopsoides (Synonyms: Amsinckia barbata, Benthamia lycopsoides) - 5 sepals present, generally equal in width. Corolla throat closed, with hairs on the fornices which block the opening.
Rancher's Fireweed, Fireweed Fiddleneck, Common Fiddleneck: Amsinckia intermedia (Synonyms: Amsinckia arizonica, Amsinckia demissa, Amsinckia echinata, Amsinckia intactilis,Amsinckia intermedia var. echinata, Amsinckia intermedia var. intermedia, Amsinckia menziesii var. intermedia, Amsinckia menziesii var. intermedia, Amsinckia microphylla, Amsinckia nana, Amsinckia rigida) - 5 sepals present, generally equal in width. Corolla throat open. The corolla is yellow, and generally up to 7 mm long and 4 mm wide. The tube is barely exserted from the calyx. Stems with spreading, rough, stiff hairs and lacking the shorter, softer hairs.
Small-flowered Fiddleneck, Menzies' Fiddleneck, Harvest Fireweed: Amsinckia menziesii (Synonyms: Amsinckia intermedia var. menziesii, Amsinckia micrantha, Amsinckia micrantha) - 5 sepals present, generally equal in width. Corolla throat open. The corolla is yellow, and generally less than 7 mm long and less than 3 mm wide. The tube is barely exserted from the calyx. Stems with spreading, rough, stiff hairs and lacking the shorter, softer hairs.
Harvest Fiddleneck, Rigid Fiddleneck: Amsinckia retrorsa -