Rubus occidentalis
{{Short description|Berry and plant}}
{{Speciesbox
|image = Rubus occidentalis 2008 07 06.JPG
|genus = Rubus
|species = occidentalis
|authority = L. 1753
|synonyms_ref = {{ThePlantList |id=rjp-102 |taxon=Rubus occidentalis |authority=L.}}
|synonyms =
- Melanobatus michiganus Greene
- Melanobatus occidentalis (L.) Greene
}}
File:Rubus Phylogenetic Tree.png
Rubus occidentalis is a species of Rubus native to eastern North America. Its common name black raspberry is shared with other closely related species. Other names occasionally used include bear's eye blackberry, black cap, black cap raspberry,{{GRIN | accessdate = 2 January 2018}}Michigan Bee Plants: [http://plants.bees.net/gallery/view_photo.php?set_albumName=rubus&id=Rubus_occidentalis_fig_2_CRW_2542_RT8 Rubus occidentalis] and scotch cap.Britton, N.L.; Brown, A. 1897. An illustrated flora of the Northern United States, Canada and the British possessions from Newfoundland to the parallel of the Southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Charles Scribner's Sons, New York.
Description
Rubus occidentalis is a deciduous shrub growing to {{convert|2|to|3|m|ft}} tall.{{Cite book|last=Marrone|first=Teresa|title=Indiana, Kentucky and Ohio Wild Berries & Fruits Field Guide|publisher=Teresa Marrone|year=2011|pages=262nd Page}} 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 {{convert|6|to|8|mm|in}} long, more than twice as long as the petals. The round-shaped fruit is a {{convert|12|to|15|mm|in|adj=on}} diameter aggregation of drupelets; it is edible, and has a high content of anthocyanins and ellagic acid.Oklahoma Biological Survey: [http://biosurvey.ou.edu/shrub/rubu-occ.htm Rubus occidentalis]Bioimages: [http://www.cas.vanderbilt.edu/bioimages/species/frame/ruoc.htm Rubus occidentalis]
Long stems also called canes grow up to {{convert|1.8|m|ft}} in length, usually forming an arch shape, but sometimes upright. Canes have curved, sharp thorns, while immature canes are unbranched and have a whitish bloom.{{Cite book|last=Marrone|first=Teresa|title=Indiana, Kentucky, and Ohio Wild Berries & Fruits Field Guide|year=2011|location=Midwestern United States of America|pages=262nd Page}}
The black raspberry is related to the red raspberry Rubus idaeus and Rubus strigosus, sharing the white underside of leaves,{{cite web |last1=Barotz |first1=Sharon |last2=Bilodeau |first2=Carrie |title=Black Raspberry |url=http://www.bio.brandeis.edu/fieldbio/medicinal_plants/pages/Black_raspberry.html |website=Medicinal Plants of the Northeast |publisher=Brandeis University |access-date=2 July 2021}} and fruit that readily detaches from the carpel.
It is closely related to Rubus leucodermis, which is also named black raspberry and blackcap. Native Plants Of The Pacific Northwest [http://nativeplantspnw.com/blackcap-raspberry-rubus-leucodermis/]
Habitat
The plant grows in disturbed areas, especially those that are logged or cut. It is also found in meadows, and near streams and lakes, trails or roadways. The native range of Rubus occidentalis extends as far east as New Brunswick, as far west as Nebraska, as far north as Quebec, and as far south as Mississippi.{{Cite web|date=2014|title=The Biota of North America Program|url=http://bonap.org|url-status=live|archive-url=https://archive.today/20210629221243/http://bonap.org/|archive-date=2021-06-29|website=The Biota of North America Program}}
Pests and diseases
Apple mosaic virus, black raspberry necrosis virus, Elsinoë veneta, raspberry bushy dwarf virus, raspberry leaf curl virus, Rhizobium radiobacter, Rhizobium rhizogenes, Didymella applanata, Monilinia fructigena, Peronospora sparsa, and Peridroma saucia all infest black raspberries.{{Cite web|title=Rubus occidentalis, black raspberry|url=https://www.cabi.org/isc/datasheet/48009|date=19 November 2019|accessdate=11 August 2021|website=CABI Invasive Species Compendium}}
Cultivars
Common black raspberry cultivars include: Black Hawk, Bristol, Jewel, Cumberland, Morrison, Munger, and Logan.{{Cite web|date=8 November 2021|title=Raspberry varieties (includes black raspberries)|url=https://harvesttotable.com/raspberry_varieties_there_are/|publisher=Harvest to Table|accessdate=11 August 2021}}
Commercial growing and processing
The center for black raspberry production is in the Willamette Valley in Oregon. The main cultivar, 'Munger', is grown on about {{Convert|600|ha|acre}}. Other cultivars include 'John Robertson', 'Allen', 'Jewel', 'Blackhawk', 'Macblack', 'Plum Farmer', 'Dundee', 'Hanover', and 'Huron'. The plants are summer tipped by hand, mechanically pruned in winter and then machine harvested. The yields are generally low per acre and this is why the fruits are often expensive.
The species has been used in the breeding of many Rubus hybrids; those between red and black raspberries are common under the name purple raspberries; 'Brandywine', 'Royalty', and 'Estate' are examples of purple raspberry cultivars. Wild purple raspberries have also been found in various places in northeastern North America where the two parental species co-occur and occasionally hybridize naturally.
The berries are typically dried or frozen, made into purées and juices, or processed as colorants. Fresh berries are also marketed in season. Two well-known liqueurs based predominantly on black raspberry fruit include France's Chambord Liqueur Royale de France and South Korea's various kinds of Bokbunja-ju.
File:Pomological Watercolor POM00007255.jpg|Black raspberry — watercolor, 1893
File:Black raspberries in a basket, side view.jpg|A punnet of black raspberries
See also
- Black raspberry ice cream, an ice cream flavor made with this type of berry
- Dewberry, a sub-set of blackberries
- Rubus niveus and Rubus coreanus, related Asian species
References
{{Reflist|30em}}
External links
- {{Commons category-inline|Rubus occidentalis}}
- [http://bonap.net/MapGallery/County/Rubus%20occidentalis.png Biota of North America Program 2014 county distribution map]
- {{PFAF|Rubus occidentalis}}
{{Taxonbar|from=Q7376217}}
Category:Flora of the Eastern United States
Category:Plants described in 1753