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Sprouting shoot biomass of five tree species in the oak forest was measured at the end of the first and second year with different stump diameter and height (cm), and site quality (unburnt and burnt). The influence of stump diameter and height, shoot diameter, number of survived shoots and total leaf area on shoot biomass production is significant (P < 0.001). The net primary productivity of sprouts of these tree species is in the following order: Lithocarpus dealbata (15.29 kg stump-1 yr-1) > L. fenestrata (7.05 kg stump–1 yr-1) > Castanopsis tribuloides (6.68 kg stump-1 yr-1) > Quercus griffithii (6.19 kg stump–1 yr-1) > Q. serrata (2.28 kg stump-1 yr-1). The treatment factor (site quality) also has significant effect on the sprouting shoot biomass production (P < 0.05). The value of Durbin–Watson statistics was found to be 1.75 (close to 2), so that the fitted adjusted regression is useful to predict the pattern of biomass in the present study. [ABSTRACT FROM AUTHOR]

Russula khanchanjungae and R. tsokae are described as new to science from subtropical to temperate forests of Sikkim Himalaya. R. griseocarnosa, recently described from China, is reported for the first time from India where it appears to be equally associated with Lithocarpus (Fagaceae). Macro- and micromorphological characters of all taxa are illustrated and their systematic placement and relations to other species are discussed. [ABSTRACT FROM AUTHOR]