Fig. 8From: Relationship between formation of earlywood vessels and leaf phenology in two ring-porous hardwoods, Quercus serrata and Robinia pseudoacacia, in early springLeaf phenology of Q. serratea (a–e) and R. pseudoacacia (f–i). a Winter buds on 18th March. b Bud break on 16th April. c Bud break and small leaves on 24th April. d Expansion of leaves and elongating new shoots on 1st May. e The expansion of leaves and elongating shoots on 9 May. f Winter buds on 18th March. g Bud break on 16th April. h, i Elongating shoots and leaves on 1st May and 9th May, respectivelyBack to article page