Blackcurrant name is derived from "Ribes nigrum") and similar fruit syrups and juices. Raw blackcurrants are 82% water, 15% carbohydrates, 1% protein and 0.4% fat (table). Per 100 g serving providing 63 kilocalories, the raw fruit has high vitamin C content (218% of the Daily Value, DV) and moderate levels of iron and manganese (12% DV each). Other nutrients are present in negligible amounts (less than 10% DV, table). Polyphenol phytochemicals present in the fruit, seeds and leaves, are being investigated for their potential biological activities. Major anthocyanins in blackcurrant pomace are delphinidin-3-"O"-glucoside, delphinidin-3-"O"-rutinoside, cyanidin-3-"O"-glucoside, and cyanidin-3-"O"-rutinoside, which are retained in
Ribes marshallii lobes. Glandular hairs occur on veins and leaf margins. The inflorescence is a solitary flower or raceme of up to three flowers which hang pendent from the branches from leaf axils. The small, showy flower has five pointed purple-red sepals which are reflexed upward. At the center is a tubular corolla of bright yellow petals from which emerge five stamens and two thin, mostly fused styles. The fruit is a prickly oblong berry up to 2 centimeters (0.8 inch) long which ripens to dark red. The fruits are edible and reputedly palatable. Ribes marshallii Ribes marshallii is a North American