Blue-lips Blue-eyed Mary, Giant Blue-eyed Mary, Large-flowered Blue-eyed Mary: Collinsia grandiflora (Synonym: Collinsia parviflora var. grandiflora) - Upper filaments glabrous or perhaps with some pubescence at their base. Flowers 2 or more from some of the axils. Calyx lobes acute at tips. Corolla 9-17 mm long, the tube conspicuously bent near its base so the corolla tube sits at a right angle to the axis of the calyx. Corolla blue with white upper lip.
Maiden Blue-eyed Mary, Small-flowered Blue-eyed Mary: Collinsia parviflora (Synonyms: Antirrhinum tenellum, Collinsia grandiflora var. pusilla, Collinsia tenella) - Upper filaments glabrous or perhaps with some pubescence at their base. Flowers 2 or more in some of the axils. Calyx lobes acute at tips. Corolla 4-7 mm long, the tube conspicuously bent near its base. Corolla blue with white upper lip.
Rattan's Blue-eyed Mary, Rattan's Collinsia, Sticky Blue-eyed Mary: Collinsia rattanii (Synonyms: Collinsia rattanii ssp. glandulosa, Collinsia rattanii ssp. rattanii) - Upper filaments glabrous or perhaps with some pubescence at their base. Calyx lobes more or less strongly rounded or blunt at tips. Corolla 4-7 mm long, the tube straight to slightly bent. Corolla blue-lavender with white upper lip.
Few-flowered Blue-eyed Mary, Mrs. Bruce's Blue-eyed Mary, Spinster's Blue-eyed Mary: Collinsia sparsiflora var. bruceae (Synonyms: Collinsia bruceae, Collinsia sparsiflora var. bruciae) - Upper filaments pubescent. Flowers all single in the axils. Calyx lobes acute at tips. Corolla 5-11 mm long, the tube conspicuously bent at its base. Corolla blue-lavender to white.