Common Name: ROSE FAMILY Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower). Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornament, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis. eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera, treatment of genera by Daniel Potter, except as noted Scientific Editor: Daniel Potter, Thomas J. Rosatti.
Habit: Shrub to vine, often thicket-forming, generally prickly. Leaf: generally odd-pinnately compound; stipules generally attached to petiole, generally gland-margined. Inflorescence: generally +- cyme or flowers 1; pedicel bractlets 0. Flower: hypanthium urn-shaped, bractlets 0; sepals often with long expanded tip; petals generally 5 (except cultivated), generally pink in California (white to red or yellow); stamens generally > 20; pistils generally many, ovaries superior, styles attached at tip, generally hairy. Fruit: bony achenes generally enclosed in fleshy, generally +- red hypanthium (hip). Etymology: (Latin: ancient name) Note: Species hybridize freely; other non-natives established locally. FNANM treatment by Lewis & Ertter uses both subspecies and varieties, the latter mostly reserved for localized variants within a subspecies; 2 varieties in Rosa woodsii subsp. gratissima treated here but not in TJM2 (2012). eFlora Treatment Author: Barbara Ertter Reference: Ertter & Lewis 2008 Madroño 55:170--177 Unabridged Reference: Lewis & Ertter 2007 Novon 17:342--353
Rosa multiflora Thunb.
NATURALIZED 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 Jepson eFlora Author: Barbara Ertter Reference: Ertter & Lewis 2008 Madroño 55:170--177 Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Rosa minutifolia Next taxon: Rosa nutkana
Citation for this treatment: Barbara Ertter 2014, Rosa multiflora, in Jepson Flora Project (eds.) Jepson eFlora, Revision 2, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=41666, accessed on December 02, 2023.
Citation for the whole project: Jepson Flora Project (eds.) 2023, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on December 02, 2023.
Geographic subdivisions for Rosa multiflora:
NCoRO, CaR, ScV, SnGb
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
Data provided by the participants of the
Consortium of California Herbaria.
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Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month
Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).
