Claudia G asked in Science & MathematicsBotany · 1 decade ago

What is the difference between a blackberry and a black raspberry?

they look pretty much the same to me....

Update:

and also the mulberry looks a lot like these....

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  • Anonymous
    1 decade ago
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    The blackberry is an aggregate fruit from a bramble bush, genus Rubus in the rose family Rosaceae. It is a widespread and well known group of several hundred species, many of which are closely related apomictic microspecies native throughout the temperate Northern hemisphere

    Blackberries are perennial plants which typically bear biennial stems ("canes") from the perennial root system.[2]

    In its first year, a new stem grows vigorously to its full length of 3-6 m, arching or trailing along the ground and bearing large palmately compound leaves with five or seven leaflets; it does not produce any flowers. In its second year, the stem does not grow longer, but the flower buds break to produce flowering laterals, which bear smaller leaves with three or five leaflets.[2] First and second year shoots are usually spiny with numerous short curved very sharp thorns (thornless cultivars have been developed purposefully).

    Unmanaged mature plants form a tangle of dense arching stems, the branches rooting from the node tip when they reach the ground. Vigorous and growing rapidly in woods, scrub, hillsides and hedgerows, blackberry shrubs tolerate poor soils, readily colonizing wasteland, ditches and vacant lots.[1][3]

    The flowers are produced in late spring and early summer on short racemes on the tips of the flowering laterals.[2] Each flower is about 2-3 cm in diameter with five white or pale pink petals.[2] The newly developed primocane produces flowers and fruits on the new growth.

    The early flowers often form more drupelets than the later ones. This can be a symptom of exhausted reserves in the plant's roots, marginal pollinator populations, or infection with a virus such as Raspberry bushy dwarf virus. Even a small change in conditions, such as a rainy day or a day too hot for bees to work after early morning, can reduce the number of bee visits to the flower, thus reducing the quality of the fruit. The drupelets only develop around ovules that are fertilized by the male gamete from a pollen grain.

    In botanical terminology, the fruit is not a berry, but an aggregate fruit of numerous drupelets ripening to black or dark purple, the "blackberry".

    Blackberry leaves are also a food for certain caterpillars. See List of Lepidoptera that feed on Rubus

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    Black Raspberry:

    Rubus occidentalis is a species of Rubus native to eastern North America. The common name Black Raspberry is shared with the closely related western American species Rubus leucodermis. Other names occasionally used include wild black raspberry, black caps, black cap raspberry, and thimbleberry.[1][2]

    Rubus occidentalis is a deciduous shrub growing to 2–3 m tall, with thorny shoots. The leaves are pinnate, with five leaflets on leaves strong-growing stems in their first year, and three leaflets on leaves on flowering branchlets. The flowers are distinct in having long, slender sepals 6–8 mm long, more than twice as long as the petals. The round-shaped fruit is a 12–15 mm diameter aggregation of drupelets; it is edible, and has a high content of anthocyanins and ellagic acid.[3][4]

    Black raspberries are high in anthocyanins. This has led to them being very useful as natural dyes and, since anthocyanins are powerful antioxidants, to a great deal of interest in them for their potential nutraceutical value. Extensive work has been ongoing at Ohio State University to evaluate their benefit for cancer treatment in mammalian test systems,[5] and the first clinical trials on patients with esophageal cancer.[6]

    The black raspberry is also closely related to the red raspberries Rubus idaeus and Rubus strigosus, sharing the distinctively white underside of the leaves and fruit that readily detaches from the carpel, but differing in the ripe fruit being black, and in the stems being more thorny. The black fruit makes them look like Blackberries, though this is only superficial, with the taste being unique and not like either the red raspberry or the blackberry. In much of the Mid-Atlantic United States, black raspberries are simply called Blackberries, even though they are not.

    As suggested by the common name, black raspberries usually have very dark purple-black fruits, rich in anthocyanin pigments. However, due to occasional mutations in the genes controlling anthocyanin production, yellow-fruited variants (yellow raspberries) sometimes occur, and have been occasionally propagated, especially in home/farm gardens in the midwestern United States (e.g.,Ohio). The yellow-fruited variants of the black raspberry retain that species' distinctive flavor, different from the similar-appearing pale-fruited variants of cultivated red raspberries (generally the Eurasian Rubus idaeus, but with some being the North American Rubus strigosus, and other cultivars representing hybrids between these two widespread species).

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