J. Regia grows well in the park of Botanic Institute in Leningrad, attaining 8-10 M.; in the southern part of Smolensk district the tree produces fruit as far as Minsk. There is a considerable number of fruit producing specimens in the Masir district in the north of White Russia.
J. Sieboldiana freezes up in cold winters in Leningrad.
J. cinerea is very hardy and effects self-polinasation in White Russia; near Kasan there is one specimen producing about 100 fruits yearly.
J. rigra produces fruits in Koslon.
Corylus Colurna—a large old specimen esctant in Leningrad rather frequently observed in many parks of European U. S. S. R.
C. Acellana is widely spread in a wild state attaining Ladoga-laxe.
C. Mascima frequently in the Crimea and the Caucasus.
Castanea Sabiva grows in the Caucasus only, and cultivated in Urraina. Castanea Henryii Corylus chinensis.
C. Lacquement and Cticstica I do not know in U. S. S. R.
C. Seguinu, C. Crensta and C. Mollissima, separate strains probably to be had in Suchum.