Fragaria iturupensis, the Iturup Strawberry, is a species of strawberry, endemic to Iturup in the Kuril Islands. It is noted to have relatively large berries for a wild species, similar in appearance to those of Fragaria virginiana. 
All strawberries have a base haploid count of 7 chromosomes. Fragaria iturupensis was initially reported as octoploid (with 8 sets of chromosomes, 56 in total), but subsequent testing found decaploids (with ten sets of chromosomes, a total of 70). It is unclear whether the earlier report was an error, or whether two forms exist.
- Hummer, K.E., Sabitov, A., & Davis, T. 2005. Iturup And Sakhalin Island Strawberries. Hortscience 40(4): 1127. Abstract
- Iturup Strawberry data from GRIN Taxonomy Database
- Hummer, K.E.; Nathewet, P.; Yanagi, T. (2009). Decaploidy in Fragaria iturupensis (Rosaceae). American Journal of Botany. 96(3): 713–716.
- Hummer, K.E., Sabitov, A., & Davis, T. 2005. Iturup And Sakhalin Island Strawberries. Hortscience 40(4): 1127. Abstract.
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