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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 multiflora Thunb.
Habit: Shrub, thicket-forming, or climbing, 15--30(75) dm. Stem: prickles generally +- few, generally not paired, +- 4--6 mm, thick-based and compressed, curved. Leaf: axis +- hairy, sparsely glandular; leaflets generally 7--9, +- hairy and glandular; terminal leaflet 10--45 mm, elliptic to obovate, widest above middle, tip acute to acuminate, margins generally single-toothed, glandless. Inflorescence: generally 5--30-flowered; pedicels 5--15 mm, sparsely hairy and/or glandular. Flower: hypanthium 1--2 mm wide at flower, glabrous to +- hairy, glandular or not, neck 1.5--2 mm wide; sepals generally glandular, with toothed lateral lobes, tip < body, entire; petals 7--13 mm, generally white; pistils generally < 10. Fruit: 5--7 mm wide; ovoid to spheric; sepals reflexed, unevenly deciduous; achenes 3.5--5 mm. Chromosomes: 2n=14.
Ecology: Generally +- disturbed open sites; Elevation: 20--700 m. Bioregional Distribution: NCoRO, CaR, ScV, SnGb; Distribution Outside California: widely naturalized in North America; native to eastern Asia. Flowering Time: Apr--Jun
eFlora Treatment Author: Barbara Ertter
Jepson Online Interchange
Previous taxon: Rosa minutifolia
Next taxon: Rosa nutkana
Citation for this treatment: Barbara Ertter 2016. Rosa multiflora, Revision 2, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=41666, accessed on May 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 29, 2016.