Burke: Rosa rubiginosa vs. Rosa multiflora

	Rosa rubiginosa	Rosa multiflora
	sweetbrier rose, small-flowered sweetbrier	multiflora rose, rambler rose
Habit	Coarse shrub 1-2 m. tall, with well-developed, flattened, unequal, strongly curved or hooked prickles, the foliage sweetly aromatic.
Leaves	Leaves alternate, deciduous, odd-pinnate with 5-7 firm leaflets; leaflets broadly elliptic to sub-orbicular, 1-2.5 cm. long, doubly serrate with gland-tipped teeth, the lower surface with stalked glands and hairs.
Flowers	Flowers in small clusters or solitary, on short, stout, glandular-bristly pedicels; sepals 5,1-2 cm. long, with stalked glands and some slender lateral lobes, spreading, deciduous at maturity; petals 5, 1.5-2 cm. long, bright pink; stamens numerous; pistils many, the styles densely short-hairy.
Fruits	Hips sub-globose or ovoid, 1-1.5 cm. long, glabrous, bright red.

	Rosa rubiginosa	Rosa multiflora
Flowering time	June-July	April-June
Habitat	Roadsides, thickets, shorelines, pastures, and other disturbed, open areas.	Roadsides, fields, highway and utility right of ways, forest edge, and other often moist, disturbed areas where escaping from cultivation.
Distribution	Occurring on both sides of the Cascades crest in Washington, though more common west of the crest; southern British Columbia to California, east to Idaho, Montana, Wyoming, and Colorado, further east from the Great Plains to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washinton; British Columbia to California; east to the southern Rocky Mountains, Great Plains, and eastern North America where widespread. [WildflowerSearch map] [BONAP county map]
Origin	Introduced Eurasia and northern Africa	Introduced from Asia
Conservation status	Not of concern	Not of concern
Sibling taxa	R. canina, R. gymnocarpa, R. multiflora, R. nutkana, R. pisocarpa, R. rugosa, R. woodsii	R. canina, R. gymnocarpa, R. nutkana, R. pisocarpa, R. rubiginosa, R. rugosa, R. woodsii
Web links	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Rosa multiflora

sweetbrier rose, small-flowered sweetbrier

multiflora rose, rambler rose

Habit

Coarse shrub 1-2 m. tall, with well-developed, flattened, unequal, strongly curved or hooked prickles, the foliage sweetly aromatic.

Leaves

Leaves alternate, deciduous, odd-pinnate with 5-7 firm leaflets;

leaflets broadly elliptic to sub-orbicular, 1-2.5 cm. long, doubly serrate with gland-tipped teeth, the lower surface with stalked glands and hairs.

Flowers

Flowers in small clusters or solitary, on short, stout, glandular-bristly pedicels;

sepals 5,1-2 cm. long, with stalked glands and some slender lateral lobes, spreading, deciduous at maturity;

petals 5, 1.5-2 cm. long, bright pink;

stamens numerous;

pistils many, the styles densely short-hairy.

Fruits

Hips sub-globose or ovoid, 1-1.5 cm. long, glabrous, bright red.

Rosa multiflora

Flowering time

June-July

April-June

Habitat

Roadsides, thickets, shorelines, pastures, and other disturbed, open areas.

Roadsides, fields, highway and utility right of ways, forest edge, and other often moist, disturbed areas where escaping from cultivation.

Distribution

Occurring on both sides of the Cascades crest in Washington, though more common west of the crest; southern British Columbia to California, east to Idaho, Montana, Wyoming, and Colorado, further east from the Great Plains to the Atlantic Coast.

[WildflowerSearch map]

[BONAP county map]

Occurring on both sides of the Cascades crest in Washinton; British Columbia to California; east to the southern Rocky Mountains, Great Plains, and eastern North America where widespread.

[WildflowerSearch map]

[BONAP county map]

Origin

Introduced Eurasia and northern Africa

Introduced from Asia

Conservation status

Not of concern

Sibling taxa