Ribes sanguineum Pursh - Grossulariaceae - red-flowering currant, winter currant, Blut-Johannisbeere

Deciduous shrub, up to 2m high, native to Northern America, naturalized in Australia, New Zealand and Europe, cultivated as ornamental; leaves broadly reniform or cordate-orbiculate to deltate-ovate, nearly equally to irregularly 5-lobed, puberulent to whitish-tomentose abaxially, puberulent adaxially or puberulent and colorless, sessile-glandular on both surfaces; flowers in racemes, up to 20-flowered and red (Ribes sanguineum var. sanguineum) or up to 40-flowered and pink to white (Ribes sanguineum var. glutinosum = Ribes glutinosum Benth.); berries palatable but insipid, blue-black, glaucous, ovoid or globose, 3-9(-10) mm, yellowish or greenish stipitate-glandular.

„Ribes sanguineum was introduced into cultivation by 19th century Scottish botanist David Douglas. It and its varieties and cultivars are popular garden shrubs, valued for their brightly colored and scented flowers in early spring, and birds and habitat support.“

Main components of the flower scent, found by vacuum headspace analysis, were β-pinene (43.7%), α-pinene (36.6%), sabinene (6.4%), limonene (4.2%), camphene (1.1%) and myrcene (1.0%). GC-O revealed 4-methoxy-2-methyl-2-mercaptobutane (sulfurous, catty, cassis-like) as character impact compound. Green notes are added by some trace compounds like (Z)-3-hexenol, 2-isopropyl-3-methoxy pyrazine and 2-isobutyl-3-methoxy pyrazine, (2E,6Z)-nona-2,6-dienal, (2E,6Z)-nona-2,6-dienol, and (E,E)-α-farnesene (0.3%).
[New data on trace components with sensory relevance in flower scents, Brunke, E.J., Rittler, F., Schmaus, G., Dragoco Rep., 1, 1996, 5-21]

Witte,H., Flora. Afbeeldingen en beschrijvingen van boomen, heesters, éénjarige planten, enz., voorkomende in de Nederlandsche tuinen, p.157, t.40 (1868) [A.J.Wendel]

ribes_sanguineum_pursh.txt · Zuletzt geändert: 2015/11/14 14:24 von andreas