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

Rubus idaeus subsp. strigosus L. (Michx.) Focke
red raspberry (grayleaf red raspberry)
Rosaceae (Rose family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #4031)

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Distribution of Rubus idaeus subsp. strigosus
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Species Information

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Medium shrub, 0.5-2 m tall, perennial with biennial stems (canes); stems erect to ascending, almost unarmed to prickly and bristly, often glandular-hairy, sometimes smooth and glaucous beneath the prickles; bark yellow to cinnamon-brown, shredding; similar to cultivated raspberry.
Alternate, deciduous, pinnately compound, 5-20 cm long; leaflets 3 to 5 on first-year canes, mostly 3 on flowering canes, egg-shaped to broadly lanceolate, 3-10 cm long, double-saw-toothed and sharply long-pointed at the tip, greenish and smooth to sparsely hairy above, paler and greyish-woolly to nearly smooth beneath, the veins and leaf-stalks often glandular-prickly; stipules linear-awl-shaped, 4-10 mm long.
Inflorescence of 1 to 4 stalked flowers in small, open, nodding, axillary or terminal clusters, the stalks often bristly-glandular; corollas white, the petals 5, erect, oblong-spoon-shaped, 4-7 mm long; calyces hairy to glandular-bristly, 5-lobed, the lobes lanceolate, bent back, 4-8 (12) mm long; ovaries superior; stamens 75-100.
Drupelets, finely and thinly woolly, weakly coherent in a red egg-shaped cluster that falls intact from the dry receptacle (a raspberry), the berries 1-1.2 cm wide.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

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

Habitat / Range

Mesic to moist thickets, rocky slopes, clearings, burns, old fields and open forests in the lowland and montane zones; common throughout BC mostly in and east of the Coast-Cascade Mountains; E to NF and S to CA, N MX and NC.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Rubus idaeus ssp. strigosus

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




Elevation (metres) 436 758 1083
Slope Gradient (%) 2 5 10
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
87 166 235
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 3 3
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: ICH(2), IDF(1)


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 montane boreal & cool temperate.

Synonyms and Alternate Names

Rubus carolinianus Rydb.
Rubus idaeus subsp. melanolasius (Dieck) Focke
Rubus idaeus subsp. sachalinensis (Levl.) Focke
Rubus idaeus var. aculeatissimus Regel & Tiling
Rubus idaeus var. canadensis Richardson
Rubus idaeus var. gracilipes M.E. Jones
Rubus idaeus var. melanolasius (Dieck) R.J. Davis
Rubus idaeus var. melanotrachys (Focke) Fernald
Rubus idaeus var. strigosus (Michx.) Maxim.
Rubus melanolasius Dieck
Rubus neglectus Peck
Rubus strigosus Michx.
Rubus strigosus var. acalyphaceus (Greene) L.H. Bailey
Rubus strigosus var. arizonicus (Greene) Kearney & Peebles
Rubus strigosus var. canadensis (Richardson) House

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References