Rosa rugosa is a prickly shrub to 2 m tall, robust, in dense clumps, very thorny and bristly, young stems hairy.
Leaves alternate, , pinnately compound, leaflets 7 or 9, 2.5-5 cm long, surface puckered (rugose), dark green.
Flowers pink to white, large, petals 3-5 cm long, flower base (hypanthium) nearly smooth, flower stalks (pedicels0 bristly-glandular; blooming May- Sept.
Fruit red, hard-fleshy, 2-3 cm wide, depressed-globe shaped, crowned by persistent sepals; outer layer is edible but interior is very hairy-bristly.
Wetland status FACU.
Frequency in NYC: Occasional.
Habitat: Back dunes, upland near salt marshes.
Notes: Often escaped from cultivation.