The yellow capsules are infected by Taphrina johansonii, an ascomycete. The healthy capsules are green. · 4/21/2010 · Nashua River Rail Trail, Groton Center, Groton, Massachusetts ≈ 7 × 4½" (17 × 11 cm)
7/18/2017 · Tobyhanna State Park, Pennsylvania ≈ 6 × 4" (16 × 11 cm)
8/31/2014 · New Mexico
7/18/2017 · Tobyhanna State Park, Pennsylvania ≈ 6 × 4" (14 × 10 cm)
10/23/2010 · Warwick Mills, New Ipswich, New Hampshire ≈ 4 × 6' (1.2 × 1.8 m)
8/31/2014 · New Mexico
8/31/2014 · New Mexico
Populus tremuloides Michx.var. intermedia Victorin
Populus tremuloides Michx.var. magnifica Victorin
Populus tremuloides Michx.var. rhomboidea Victorin
Populus tremula L.ssp. tremuloides (Michx.)A.Löve&D.Löve
Populus aurea Tidestr.
Populus cercidiphylla Britton
Populus ×polygonifolia Bernard
Populus tremuloides Michx.var. aurea (Tidestr.)Daniels
Populus tremuloides Michx.var. cercidiphylla (Britton)Sudw.
Populus tremuloides Michx.var. vancouveriana (Trel.)Sarg.
Populus vancouveriana Trel.
Populus tremuloides description by Thomas H. Kent, last updated 26 Jul 2023.