Bluefly Honeysuckle, Sweetberry Honeysuckle, Sweet-berry Honeysuckle: Lonicera caerulea var. caurina (Synonyms: Lonicera caerulea, Lonicera caurina) -
Orange Honeysuckle: Lonicera ciliosa - Flowers orange and in terminal inflorescences of several to many flowers.
Purple-flower Honeysuckle, Purple-flowered Honeysuckle, Double Honeysuckle: Lonicera conjugialis -
Black Twinberry, Black Twin-berry, Twinberry Honeysuckle, Twinberry, Bearberry: Lonicera involucrata var. involucrata (Synonyms: Distegia involucrata, Lonicera involucrata var. flavescens, Xylosteum involucratum) - Flowers light to deep yellow and paired. Bracts at the top of the peduncle (base of flowers) is larger and leaf-like. Berries blackish and separate.
Japanese Honeysuckle: Lonicera japonica (Synonyms: Lonicera japonica var. aureo-reticulata, Lonicera japonica var. chinensis, Nintooa japonica) - Introduced. Reported from Asotin County, WA.
Tatarian Honeysuckle: Lonicera tatarica (Synonyms: Lonicera siberica, Lonicera tatarica var. latifolia) - Found in Whitman County, WA.
Rocky Mountain Honeysuckle, Rocky Mt. Twinberry, Red Twinberry, Utah Honeysuckle: Lonicera utahensis (Syonym: Lonicera ebractulata) - Flowers white, cream-colored, or faint yellow in color. Bracts at the top of the peduncle (base of flowers) are small and inconspicuous. Berries red and united at the base.