|Fragaria vesca illustration from Atlas des plantes de France 1891, by A. Masclef|
20+ species; see text
Fragaria // is a genus of flowering plants in the rose family, Rosaceae, commonly known as strawberries for their edible fruits. There are more than 20 described species and many hybrids and cultivars. The most common strawberries grown commercially are cultivars of the garden strawberry, a hybrid known as Fragaria × ananassa. Strawberries have a taste that varies by cultivar, and ranges from quite sweet to rather tart. Strawberries are an important commercial fruit crop, widely grown in all temperate regions of the world.
Strawberries are not true berries. The fleshy and edible part of the fruit is a receptacle, and the parts that are sometimes mistakenly called "seeds" are achenes. Although it is commonly thought that strawberries get their name from straw being used as a mulch in cultivating the plants, the etymology of the word is uncertain.
There are more than 20 different Fragaria species worldwide. Numbers of other species have been proposed, some of which are now recognized as subspecies. Key to the classification of strawberry species is recognizing that they vary in the number of chromosomes. There are seven basic types of chromosomes that they all have in common. However, they exhibit different polyploidy. Some species are diploid, having two sets of the seven chromosomes (14 chromosomes total). Others are tetraploid (four sets, 28 chromosomes total), hexaploid (six sets, 42 chromosomes total), octoploid (eight sets, 56 chromosomes total), or decaploid (ten sets, 70 chromosomes total).
As a rough rule (with exceptions), strawberry species with more chromosomes tend to be more robust and produce larger plants with larger berries.
- Fragaria bucharica Losinsk. (China)
- Fragaria daltoniana J.Gay (Himalayas)
- Fragaria gracilis Losinskaja (China)
- Fragaria iinumae Makino (East Russia, Japan)
- Fragaria nilgerrensis Schlecht. ex J.Gay (South and Southeast Asia)
- Fragaria nipponica Makino (Japan)
- Fragaria nubicola Lindl. ex Lacaita (Himalayas)
- Fragaria pentaphylla Losinsk. (China)
- Fragaria rubicola
- Fragaria vesca Coville - Woodland Strawberry (Northern Hemisphere)
- Fragaria viridis Duchesne (Europe, Central Asia)
- Fragaria yezoensis H.Hara (Northeast Asia)
- Fragaria x bifera Duchesne - (F. vesca × viridis). Europe
Octoploid species and hybrids
- Fragaria × ananassa Duchesne ex Rozier - Pineapple strawberry, Garden strawberry
- Fragaria chiloensis (L.) Mill. - Beach strawberry (Western Americas)
- Fragaria chiloensis subsp. chiloensis forma chiloensis
- Fragaria chiloensis subsp. chiloensis forma patagonica (Argentina, Chile)
- Fragaria chiloensis subsp. lucida (E. Vilm. ex Gay) Staudt (coast of British Columbia, Washington, Oregon, California)
- Fragaria chiloensis subsp. pacifica Staudt (coast of Alaska, British Columbia, Washington, Oregon, California)
- Fragaria chiloensis subsp. sandwicensis (Decne.) Staudt - ʻŌhelo papa (Hawaiʻi)
- Fragaria iturupensis Staudt - Iturup strawberry (Iturup, Kuril Islands)
- Fragaria virginiana Mill. - Virginia strawberry (North America)
Decaploid species and hybrids
- Fragaria cascadensis K.E. Hummer, Cascade Mountains in Oregon, United States
- Fragaria × Comarum hybrids
- Fragaria × vescana
F. var. ‘Lipstick’, red-flowered runnering ornamental, sparse small globular fruits.
A number of species of butterflies and moths feed on strawberry plants: see list of Lepidoptera that feed on strawberry plants.
- Accessory fruit
- Mock strawberry and barren strawberry, which both bear resemblance to Fragaria, are closely related species in other genera.
- Strawberry tree (disambiguation) is a name for several trees that are unrelated to strawberry.
- The breeding of strawberries
Hogan, Sean (chief consultant), Flora (subtitle) A Gardener’s Encyclopedia, (Portland, Oregon USA) Timber Press, 2003. ISBN 0-88192-538-1.
- "Fragaria". Germplasm Resources Information Network. United States Department of Agriculture. 2008-03-03. Retrieved 2009-02-17.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
- Sunset Western Garden Book, 1995:606–607
- Esau, K. 1977. Anatomy of seed plants. John Wiley and Sons, New York.
- E-Flora BC: Electronic Atlas of the Plants of British Columbia: Fragaria virginiana.
- "Etymology of Strawberry". snopes.com. Retrieved 2013-05-08.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
- USDA GRIN Taxonomy Database Listing of Fragaria species
- Darrow, George M. The Strawberry: History, Breeding and Physiology. New York. Holt, Rinehart and Winston, 1966. online text
- "A new species of Fragaria (Roseaceae) from Oregon". United States Department of Agriculture. Retrieved 2012-06-10.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
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