VU

Red-stemmed Bramble

Rubus divaricatus

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Red-stemmed Bramble faces severe pressure from agricultural expansion and urban development across its limited range in the Pacific Northwest. Invasive plant species, particularly non-native blackberries and aggressive grasses, compete directly for habitat space and resources. Climate change poses an additional threat through altered precipitation patterns that affect the moist woodland conditions this species requires for successful reproduction.

Threat summary

Habitat

Red-stemmed Bramble inhabits moist woodland edges, forest clearings, and riparian zones in the Pacific Northwest, typically growing in partially shaded areas with well-drained but moisture-retentive soils. The species shows a preference for disturbed forest margins and secondary growth areas where it can establish in gaps between larger vegetation.

Other threatened species in Rosaceae

VU

Rosier inodore

Rosa inodora

Unknown
VU

Shade Bramble

Rubus nemorosus

Unknown
VU

Stellately-hairy Bramble

Rubus septentrionalis

Unknown
VU

Langes Brombeere

Rubus langei

Unknown

Frequently asked questions

Why is Red-stemmed Bramble classified as Vulnerable?
Red-stemmed Bramble is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Red-stemmed Bramble faces severe pressure from agricultural expansion and urban development across its limited range in the Pacific Northwest. Invasive plant species, particularly non-native blackberries and aggressive grasses, compete directly for habitat space and resources. Climate change poses an additional threat through altered precipitation patterns that affect the moist woodland conditions this species requires for successful reproduction.
Where does Red-stemmed Bramble live?
Red-stemmed Bramble occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Red-stemmed Bramble?
The main threats to Red-stemmed Bramble are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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