Barclay's Willow: Salix barclayi (Synonyms: Salix barclayi var. angustifolia, Salix barclayi var. conjuncta, Salix barclayi var. latiuscula, Salix pyrolifolia var. hoyeriana)
Bebb's Willow, Gray Willow, Long-beak Willow: Salix bebbiana (Synonyms: Salix bebbiana. var. bebbiana, Salix bebbiana var. capreifolia, Salix bebbiana var. depilis, Salix bebbiana var. luxurians, Salix bebbiana var. perrostrata, Salix bebbiana var. projecta) - Collected near Glenwood, WA and Conboy Lake NWR
Booth's Willow: Salix boothii (Synonyms: Salix myrtillifolia, Salix novae-angliae, Salix pseudocordata, Salix pseudomyrsinites)
Under-green Willow, Variable Willow: Salix commutata (Synonyms: Salix barclayi var. commutata, Salix commutata var. denudata, Salix commutata var. puberula) - Collected near Bird Creek Meadows parking area
Drummond's Willow: Salix drummondiana (Synonyms: Salix bella, Salix drummondiana ssp. subcaerulea, Salix drummondiana var. bella, Salix drummondiana var. subcaerulea, Salix subcaerulea) -
Geyer's Willow: Salix geyeriana (Synonyms: Salix geyeriana ssp. argentea, Salix geyeriana var. argentea, Salix geyeriana var. geyeriana, Salix geyeriana var. meleina, Salix meleina) -
Coastal Willow, Hooker's Willow, Piper's Willow: Salix hookeriana (Synonyms: Salix amplifolia, Salix hookeriana var. laurifolia, Salix hookeriana var. tomentosa, Salix piperi) -
Pacific Willow, Shining WIllow: Salix lasiandra ssp. lasiandra (Synonyms: Salix lasiandra var abramsii, Salix lasiandra var. lancifolia, Salix lucida ssp. lasiandra) -
Arroyo Willow: Salix lasiolepis (Salix lasiolepis var. bracelinae, Salix lasiolepis var. falax, Salix lasiolepis var. lasiolepis, Salix lasiolepis var. sandbergii, Salix lutea var. nivaria) -
Dusky Willow: Salix melanopsis (Synonyms: Salix bolanderiana, Salix exigua ssp. melanopsis, Salix exigua var. gracilipes, Salix exigua var. tenerrima, Salix parksiana, Salix sessilifolia var. vancouverensis, Salix tenerrima) - Collected along Trout Creek near Trout Lake, WA
Bog Willow: Salix pedicellaris (Synonyms: Salix fuscescens var. hebecarpa, Salix hebecarpa, Salix myrtilloides var. hypoglauca, Salix myrtilloides var. pedicellaris, Salix pedicellaris var. hypoglauca, Salix pedicellaris var. tenuescens) -
Diamondleaf Willow, Tealeaf Willow: Salix planifolia (Synonyms: Salix monica, Salix pennata, Salix phylicifolia, Salix phylicifolia ssp. planifolia, Salix phylicifolia var. monica, Salix phylicifolia var. pennata, Salix phylicifolia var. planifolia, Salix planifolia var. monica, Salix planifolia var. nelsonii, Salix planifolia var. pennata) -
Mackenzie's Willow: Salix prolixa (Synonyms: Salix cordata var. mackenzieana, Salix eriocephala ssp. mackenzieana, Salix eriocephala var. mackenzieana, Salix mackenzieana, Salix mackenzieana var. macrogemma, Salix rigida ssp. mackenzieana, Salix rigida var. mackenzieana, Salix rigida var. macrogemma) - Collected near Trout Lake, WA
Scouler's Willow: Salix scouleriana (Synonyms: Salix scouleriana var. brachystachys, Salix scouleriana var. coetaenea, Salix scouleriana var. crassijulis, Salix scouleriana var. flavescens, Salix scouleriana var. poikila, Salix scouleriana var. scouleriana, Salix scouleriana var. thompsonii, Salix stagnalis) -
Northwest Sandbar Willow, Soft-leaved Willow: Salix sessilifolia (Synonyms: Salix exigua var. sessilifolia, Salix fluviatilis var. sessilifolia, Salix longifolia var. sessilifolia, Salix macrostachya, Salix macrostachya var. cusickii, Salix sessilifolia var. villosa) -
Sitka Willow: Salix sitchensis (Synonyms: Salix coulteri, Salix cuneata, Salix sitchensis var. congesta, Salix sitchensis var. denudata, Salix sitchensis var. parviflora, Salix sitchensis var. ralphiana, Salix sitchensis var. sitchensis) -
Unidentified willow d - possibly Salix lasiandra var. lasiandra or Salix exigua ssp. exigua var. exigua