Comparative Study on Morphological Characteristics and Ecological Adaptability of Vessel Elements of Ten Ribes L. Varieties Determination of the Fatty Acids in Ribes himalense Analysis on fatty acids in seeds of Ribes qingzangense Phenolic constituents in Embelia ribes Some New Taxa of the Genus Ribes (Saxifragaceae) of China Ribes pulchellum,a Newly Recorded Plant of the Genus Ribes from Shandong New Taxa of Ribes from Sichuan STUDIES ON INDUCTION OF SOMATIC EMBRYOS AND PLANTLET REGENERATION FROM UNFERTILIZED OVULES IN VITRO CULTURE OF BLACK CURRANT (RIBES NIGRUM L.) Pollen Morphology of Ribes L. and Its Taxonomic Significance A Study on the Genus Ribes L. in China