Rubus idaeus.commons.wikimedia.org

Rubus idaeus var. idaeus is an arching shrub, stem to 2 m tall, armed with slender-based prickles; roots associated with vesicular-arbuscular endomycorrhizal fungi (Berliner and Torrey 1989). 

Leaves alternate, palmately compound with 3-5 leaflets, softy gray-hairy below, margins toothed. 

Flowers petals white to greenish, shorter than sepals. 

Fruit of fleshy 1-seeded drupes, red at maturity, to 1.5 cm thick. Edible. 

Wetland status: FAC. 

Frequency in NYC: Very infrequent. 

Origin: Eurasia. 

Habitat: Cultivated. Rarely escaping.