The new forms of gymnosperm and angiosperm woody plants at the Peter the Great Botanic Garden (Saint Petersburg, Russia)

The article describes 7 new scientific forms (Larix decidua Mill. F. tortuosaL. Orlova, Byalt et Firsov forma nova, L. komarovii B. Kolesn. f. divaricata L. Orlova, Byalt et Firsov forma nova, L. lubarskii Sukacz. f. pendula L. Orlova, Byalt et Firsov forma nova, Magnolia kobus DC f. pendula Byalt et Firsov forma nova, Malus sachalinensis (Kom.) Juz. f. divaricata Byalt et Firsov forma nova, Sorbus persica Hedl. f. pendula Byalt et. nova, Cotoneaster tomentosus (Ait.) Lindl. f. pendula Byalt et Firsov forma nova) cultivated at the arboretum park of the Peter the Great Botanic Garden in St. Petersburg. The article gives information on the origin of planting material, the differences between new forms and close taxa (Latin diagnoses), type specimens and place of their preservation. Seven photos illustrate the article.