E-Flora BC: Electronic Atlas of the Flora of British Columbia

Rosa gymnocarpa Nutt.
baldhip rose (dwarf rose)
Rosaceae (Rose family)

Introduction to Vascular Plants

© Doug Murphy  Email the photographer   (Photo ID #29736)

E-Flora BC Static Map
Distribution of Rosa gymnocarpa
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Species Information

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General:
Low to medium shrub, 0.3-1.5 m tall; stems spindly, erect to spreading, usually bristly with numerous soft, straight prickles all about the same size, occasionally unarmed especially on younger stems, which are often stalked-glandular; mature stems greyish-brown.
Leaves:
Alternate, deciduous, odd-pinnately compound, the leaf-stalk and axis somewhat stalked-glandular; leaflets 5, 7 or 9, elliptic, 1-4 cm long, double-toothed with gland-tipped teeth, otherwise smooth; stipules glandular and usually blunt-toothed.
Flowers:
Inflorescence of usually single, occasionally 2 to 3, stalked flowers at the ends of lateral branchlets, the stalks bristly-glandular; corollas pale pink to rose, bowl- to saucer-shaped, small (2-3.5 cm across), the petals 5, 10-15 mm long; calyces 5-lobed, the lobes 5-12 mm long, egg-shaped to triangular tapering to a tail-like sharp tip, smooth or occasionally glandular on the back, deciduous; ovaries superior but enclosed in the urn-shaped floral tube (hypanthium); stamens numerous.
Fruits:
Achenes, few to about 12, smooth except for a few long hairs at the tip, enclosed by the fleshy hypanthium, which ripens into an orange to scarlet, pear-shaped to ellipsoid hip 6-10 mm long, the neck and calyx-lobes deciduous.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Purple
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Red
Present from Summer to Fall
Source:  The USDA

Habitat / Range

Dry to moist open forests, forest edges, thickets and clearings in the lowland and montane zones; common in S BC south of about 53oN; S to CA, MT and ID.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Rosa gymnocarpa

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 0 710 1960
Slope Gradient (%) 0 26 235
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 203 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 3 7
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
2584
Modal BEC Zone Class
ICH
All BEC Zones (# of stations/zone) species was recorded in: BG(1), CDF(183), CWH(517), ESSF(17), ICH(1065), IDF(530), MS(79), PP(27), SBS(15), SWB(1)

Ecological Indicator Information

A shade-tolerant/intolerant, submontane to subalpine, Western North American deciduous shrub distributed equally in the Pacific and Cordilleran regions. Occurs on very dry to moderately dry, nutrient-medium soils within boreal, temperate, and mesothermal climates; its occurrence decreases with increasing precipitation, latitude, and elevation. Common in open-canopy forests on water-shedding sites; persists on cutover areas. Usually associated with Gaultheria shallon, Kindbergia oregana, and Mahonia nervosa. Characteristic of moisture-deficient sites.

SourceIndicator Plants of Coastal British Columbia (Information applies to coastal locations only)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

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General References