Salix humilis Resources: USDA Plant List Accession number: Sandberg Specimen(s): 252

Salix discolor Resources: USDA Plant List Accession number: Sandberg Specimen(s): 254

Salix cordata Resources: USDA Plant List Accession number: Sandberg Specimen(s): 253

Salix candida Resources: USDA Plant List Accession number: Sandberg Specimen(s): 250

Populus tremuloides Resources: USDA Plant List Accession number: Sandberg Specimen(s): 259

Populus grandidentata Resources: USDA Plant List Accession number: Sandberg Specimen(s): 257

Populus deltoides Resources: USDA Plant List Accession number: Sandberg Specimen(s): 258

Populus balsamifera Resources: USDA Plant List Accession number: Sandberg Specimen(s): 256

Galium triflorum Resources: USDA Plant List Accession number: Sandberg Specimen(s): 249

Galium trifidum Resources: USDA Plant List Accession number: Sandberg Specimen(s): 246