Burke: Rosa rubiginosa vs. Rosa pisocarpa

	Rosa rubiginosa	Rosa pisocarpa
	sweetbrier rose, small-flowered sweetbrier	clustered rose, peafruit rose
Habit	Coarse shrub 1-2 m. tall, with well-developed, flattened, unequal, strongly curved or hooked prickles, the foliage sweetly aromatic.	Deciduous shrub 1-2 m. tall, prickly to nearly unarmed, the prickles straight, the stem not bristly.
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.	Leaves alternate, pinnate, puberulent on the lower surface, not glandular; leaflets 5-9, elliptic to ovate, 1.5-4 cm. long and 0.7-2 cm. wide, finely serrate.
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.	Flowers small, in flat-topped cymes terminating the branches of the season, seldom solitary; calyx lobes 5, 1-1.5 cm. long and 2.5-3.5 mm. wide at the base, constricted in the middle, with coarse, stalked glands on the back; the calyx tube glabrous and bluish-glaucous, 3-5 mm. thick; petals 5, 1.2-2 cm. long, pink; stamens and pistils numerous.
Fruits	Hips sub-globose or ovoid, 1-1.5 cm. long, glabrous, bright red.	Hips purplish, globose or ellipsoid, 6-12 mm. long and thick, the achenes numerous, 3 mm. long, stiffly long-hairy along one side.

	Rosa rubiginosa	Rosa pisocarpa
Flowering time	June-July	May-July
Habitat	Roadsides, thickets, shorelines, pastures, and other disturbed, open areas.	Thickets, stream banks, and swampy places at lower elevations.
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 west of the Cascades crest and east in the Columbia River Gorge in Washington; southern British Columbia to California. [WildflowerSearch map] [BONAP county map]
Origin	Introduced Eurasia and northern Africa	Native
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. multiflora, R. nutkana, R. rubiginosa, R. rugosa, R. woodsii
Subordinate taxa		R. pisocarpa var. pisocarpa
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, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Rosa pisocarpa

sweetbrier rose, small-flowered sweetbrier

clustered rose, peafruit rose

Habit

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

Deciduous shrub 1-2 m. tall, prickly to nearly unarmed, the prickles straight, the stem not bristly.

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.

Leaves alternate, pinnate, puberulent on the lower surface, not glandular;

leaflets 5-9, elliptic to ovate, 1.5-4 cm. long and 0.7-2 cm. wide, finely serrate.

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.

Flowers small, in flat-topped cymes terminating the branches of the season, seldom solitary;

calyx lobes 5, 1-1.5 cm. long and 2.5-3.5 mm. wide at the base, constricted in the middle, with coarse, stalked glands on the back; the calyx tube glabrous and bluish-glaucous, 3-5 mm. thick;

petals 5, 1.2-2 cm. long, pink;

stamens and pistils numerous.

Fruits

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

Hips purplish, globose or ellipsoid, 6-12 mm. long and thick, the achenes numerous, 3 mm. long, stiffly long-hairy along one side.

Rosa pisocarpa

Flowering time

June-July

May-July

Habitat

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

Thickets, stream banks, and swampy places at lower elevations.

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]