THE INFLUENCES OF ACID RAIN OF THE LIBERATION OF SEVERAL ELEMENTS FROM VARIOUS SOIL TYPES IN CHONGQING Notes on Paphiopedilum wardii and its related species New Taxa of the Genera Phacus and Lepocinclis in Euglenophyta from China Effects of Spartina alterniflora invasion on methane emission in coastal salt marsh. Applications of archaeal membrane lipids in investigating archaeal community composition and its responses to environmental factors. Pharmacognostical identification of Mongolian medicinal herb Lagopsis supina Chemical constituents of Lepidozia vitrea A new phenethyl alcohol glycoside from Orobanche coerulescens Two New Ferns from Shandong Province Two New Ferns from Shandong Province