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

Rosa nutkana C. Presl
Nootka rose
Rosaceae (Rose family)

Introduction to Vascular Plants

© Hans J. Koch  Email the photographer   (Photo ID #17056)

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Distribution of Rosa nutkana
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Species Information

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PDROS1J0S1
PDROS1J0S3


General:
Medium to tall shrub 0.5-3 m tall, spreading by rhizomes and often thicket-forming; stems stout to spindly, erect to arching, with a pair of large prickles (thorns) at each node, usually lacking internodal prickles; mature stems blackish.
Leaves:
Alternate, deciduous, odd-pinnately compound, the leaf-stalk and axis glandular-hairy or short-hairy; leaflets 5 or 7 (9), elliptic to egg-shaped, 1-7 cm long, coarsely single- or double-toothed, somewhat glandular-short-hairy beneath; stipules usually glandular-blunt-toothed.
Flowers:
Inflorescence of usually single, sometimes 2 or 3, stalked flowers on lateral branchlets; corollas pink, saucer-shaped, large (4-8 cm across), the petals 5, (2) 2.5-4 cm long; calyces smooth or glandular-bristly, 5-lobed, the lobes lanceolate, 1.5-4 cm long, long-tapering and narrowing then flaring below the tip, persistent; ovaries superior but enclosed in the urn-shaped floral tube (hypanthium); stamens numerous.
Fruits:
Achenes, numerous, stiffly long-hairy on one side, enclosed by the fleshy hypanthium, which ripens into a purplish-red, globe- to pear-shaped hip 1-2 cm long.
Notes:
Two varieties occur in BC:

1. Leaflets doubly saw-toothed, the teeth gland-tipped; infrastipular prickles becoming much enlarged and flattened toward base; plants mostly from west of Coast-Cascade Mountains................. var. nutkana

1. Leaflets singly saw-toothed, the teeth not gland-tiped; prickles rarely enlarged and flattened; plants mostly from east of Coast-Cascade Mountains..................var. hispida Fern.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

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

Habitat / Range

Mesic to moist thickets, forest edges, river terraces, shorelines, streambanks, clearings and roadsides in the lowland and montane zones; common throughout BC south of 55oN except in the Chilcotin area, infrequent northward, absent in NE BC; N to AK and S to CA, CO and UT.

Source: The Illustrated Flora of British Columbia

Additional Notes

Aboriginal people in the Pacific Northwest traditionally used this species as a food, medicine, and source of cultural material. The methanolic extract of the fruits of R. nutkana has been found to have inhibitory activity against methicillin-resistant Staphylococcus aureus (MRSA).

Reference:

Jovel, Eduardo M., Xi Ling Zhou, Dong Sheng Ming, Tanya R. Wahbe, and G.H. Neil Towers. 2007. Bioactivity-guided isolation of the active compounds from Rosa nutkana and quantitative analysis of ascorbic acid by HPLC Canadian Journal of Physiology and Pharmacology 85(9): 865–871.

Ecology

Ecological Framework for Rosa nutkana

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) 1 761 1786
Slope Gradient (%) 0 19 244
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 210 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 3 8
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
1043
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: BG(59), BWBS(24), CDF(32), CWH(86), ESSF(11), ICH(146), IDF(402), MS(73), PP(78), SBPS(1), SBS(66)

Ecological Indicator Information

A shade-tolerant/intolerant, submontane to montane, Western North American deciduous shrub distributed more in the Pacific than the Cordilleran region. Occurs on fresh to very moist, nitrogen­rich soils within boreal, cool temperate, and cool mesothermal climates. Most frequent on floodplains; sporadic in non­forested communities and open-canopy forests on water­shedding sites with fluctuating groundwater tables. Occasional on sites affected by ocean spray and brackish water. A nitrophytic species characteristic of Moder and Mull humus forms.

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.

Synonyms and Alternate Names

Rosa muriculata Greene

Taxonomic and Nomenclatural Links

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General References