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Ribes Spicatum
''Ribes spicatum'', the downy currant or Nordic currant, is a species in the genus ''Ribes'', native to northern Europe and northern Asia. Its bright red berries are edible and quite goodtasting. It can be differentiated from the more common redcurrant (''Ribes rubrum The redcurrant or red currant (''Ribes rubrum'') is a member of the genus ''Ribes'' in the gooseberry family. It is native to western Europe. The species is widely cultivated and has escaped into the wild in many regions. Description ''Ribes r ...'') not so much by its leaf hairs, as these tend to fall off as the leaf ages, but by other characteristics: the leaves of ''R.spicatum'' are a duller and darker green than ''R.rubrum'' with its paler yellowishgreen leaves. ''R.spicatum'' holds its leaves at a right angle to the stem, whereas ''R.rubrum'' leaves are less erect, markedly distinguishing the overall form of the bushes. ''R.spicatum'' has green petioles, but ''R.rubrum'' petioles are more orangeish. Subsp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ribes
''Ribes'' is a genus of about 200 known species of flowering plants, most of them native to the temperate regions of the Northern Hemisphere. The various species are known as currants or gooseberries, and some are cultivated for their edible fruit or as ornamental plants. ''Ribes'' is the only genus in the family Grossulariaceae. Description ''Ribes'' species are medium shrublike plants with marked diversity in strikingly diverse flowers and fruit. They have either palmately lobed or compound leaves, and some have thorns. The sepals of the flowers are larger than the petals, and fuse into a tube or saucer shape. The ovary is inferior, maturing into a berry with many seeds. Taxonomy ''Ribes'' is the single genus in the Saxifragales family Grossulariaceae. Although once included in the broader circumscription of Saxifragaceae ''sensu lato'', it is now positioned as a sister group to Saxifragaceae ''sensu stricto''. Subdivision First treated on a worldwide basis in 1907, the in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ribes Rubrum
The redcurrant or red currant (''Ribes rubrum'') is a member of the genus ''Ribes'' in the gooseberry family. It is native to western Europe. The species is widely cultivated and has escaped into the wild in many regions. Description ''Ribes rubrum'' is a deciduous shrub normally growing to tall, occasionally , with five-lobed leaves arranged spirally on the stems. The flowers are inconspicuous yellow-green, in pendulous racemes, maturing into bright red translucent edible berries about diameter, with 3–10 berries on each raceme. An established bush can produce of berries from mid- to late summer. Phytochemicals Redcurrant fruits are known for their tart flavor, a characteristic provided by a relatively high content of organic acids and mixed polyphenols. As many as 65 different phenolic compounds may contribute to the astringent properties of redcurrants, with these contents increasing during the last month of ripening. Twenty-five individual polyphenols and other nitr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petiole (botany)
In botany, the petiole () is the stalk that attaches the leaf blade to the stem, and is able to twist the leaf to face the sun. This gives a characteristic foliage arrangement to the plant. Outgrowths appearing on each side of the petiole in some species are called stipules. Leaves with a petiole are said to be petiolate, while leaves lacking a petiole are called sessile or apetiolate. Description The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves, the leaf stalk may be long, as in the leaves of celery and rhubarb, or short. When completely absent, the blade attaches directly to the stem and is said to be sessile. Subpetiolate leaves have an extremely short petiole, and may appear sessile. The broomrape family Orobanchaceae is an example of a family in which the leaves are always sessile. In some other plant groups, such as the speedwell genus '' Veronica'', petiolate and sessile leaves may occur in different species. In the grasses (Poaceae), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
