Rosa woodsii subsp. ultramontana Lindl. (S. Watson) Roy L. Taylor & MacBryde
prairie rose
Rosaceae (Rose family)

Introduction to Vascular Plants

Photograph

© Jamie Fenneman     (Photo ID #4030)


Map

E-Flora BC Static Map

Distribution of Rosa woodsii subsp. ultramontana
Click here to view the full interactive map and legend

Species Information

General:
Low to medium shrub, 0.5-2 m tall, spreading by rhizomes and sometimes thicket-forming; stems spindly to stout, erect to spreading, usually with a pair of straight or slightly curved prickles near the base of the leaves, often with weak internodal prickles or bristles especially on young shoots; mature stems reddish- to greyish-brown.
Leaves:
Alternate, deciduous, odd-pinnately compound, the leaf-stalk and axis short-hairy and sometimes glandular; leaflets 5, 7 or 9, elliptic to egg-shaped, 1.5-5 cm long, short- or glandular-hairy to smooth beneath, coarsely single-toothed, the teeth not gland-tipped; stipules entire or glandular-blunt-toothed, short-hairy on the back.
Flowers:
Inflorescence of 1 to 5 stalked flowers in a small, short cluster at the end of a lateral branchlet; corollas pink, saucer-shaped, rather small (3-5 cm across), the petals 5, 12-25 mm long; calyces 5-lobed, the lobes lanceolate, long-tapering and narrowing then flaring below the tip, 10-20 mm long, rarely stalked-glandular on the back, 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 dark red, globe-shaped to ellipsoid hip 6-12 mm long.

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Ecology

Ecological Framework for Rosa woodsii ssp. ultramontana

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

Avg

Min

Max

Elevation (metres)
667 525 810
Slope Gradient (%)
53 47 60

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

231 222 242
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 2 2
Modal Nutrient Regime
Class
C
# of field plots
 species was recorded in:
2
Modal BEC Zone Class
IDF

All BEC Zones (# of stations/zone) species was recorded in

IDF(2)

Habitat and Range

Dry rocky slopes, open forests and clearings, and moist gullies, draws and streambanks in grasslands and savanna in the steppe and montane zones; frequent in S and C BC east of the Coast-Cascade Mountains, infrequent northward; E to SK and S to WI, MO, TX and CA.

SourceThe Illustrated Flora of British Columbia