New forms of woody plants cultivated at the Peter the Great Botanical Garden

The article has a description of four new forms (Kalopanax septemlobus (Thunb.) Koidz. f. variegatus Byalt et Firsov forma nova, Cercidiphyllum japonicum Siebold et Zucc. f. piramidale Byalt et Firsov forma nova, Quercus crispula Blume f. fastigiata Byalt et Firsov forma nova, Rhododendron maximum L. f. apetalum Byalt et Firsov forma nova) and the new hybrid Myrica × uchanovii Byalt et Firsov hybridus novus (Myrica gale L.× M. tomentosa (DC.) Aschers. et Graebn.) cultivated at the Peter the Great Botanical Garden in St. Petersburg. We provide information about the origin of the planting material, differences between the new forms from related taxa with Latin diagnoses, type specimens and place of its preservation. The article contains seven photos.