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|Jepson eFlora: Taxon page
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|Family: Rosaceae||View Description||Dichotomous Key|
|Genus: Rosa||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Rosa canina L.
Habit: Shrub or thicket-forming, generally 8--40 dm. Stem: prickles +- few, generally not paired, 3--10 mm, thick-based and compressed, curved. Leaf: axis glabrous or with hairs to 1 mm, glandless; leaflets generally 5--7, (+-) glabrous; terminal leaflet generally 15--40 mm, +- ovate, widest below middle, tip +- acute, margins +- single-toothed, sparsely glandular. Inflorescence: generally 1--5-flowered; pedicels generally 10--20 mm, generally glabrous, glandless. Flower: hypanthium generally 4--5 mm wide at flower, glabrous, glandless, neck 2--3 mm wide; sepals +- glandless, margins with toothed lateral lobes, tip generally +- = body, +- toothed; petals 15--30 mm, white to pale pink; pistils 25--40. Fruit: 10--20 mm wide; +- ellipsoid; sepals reflexed, unevenly deciduous; achenes 4.5--6 mm. Chromosomes: 2n=35.
Ecology: Generally +- dry open areas; Elevation: 100--1500 m. Bioregional Distribution: NW, n SN; Distribution Outside California: to Washington, Idaho, Utah, also eastern United States; native to Eurasia. Flowering Time: May--Jul
eFlora Treatment Author: Barbara Ertter
Jepson Online Interchange
Previous taxon: Rosa californica
Next taxon: Rosa gymnocarpa
Citation for this treatment: Barbara Ertter 2017. Rosa canina, Revision 2, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=41633, accessed on January 19, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 19, 2017.