Oenothera fruticosa sundrops Onagraceae OEFR; R (DeCandido 2001);

 

Oenothera fruticosa.commons.wikipedia.org

Oenothera fruticosa.commons.wikipedia.org (Accessed 5/2014).

Oenothera fruticosa is a perennial herb to 1 m tall, stems slender, appressed-hairy, colonial from rhizomes. 

Leaves alternate, stalk 0-1 cm long, blade to 11 cm long, 2.5 cm wide, elliptic; leaves of first year rosette egg-shaped. 

Flowers clear, bright yellow, showy, to 5 cm wide, 4 petals, 1.5-2.5 cm long, notched at top, folding up at night; calyx lobes 0.8-1.8 cm long, calyx tube 0.5-1.5 cm long, obligate outcrosser. 

Fruit dry, capsule, sharply 4-sided, club-shaped, 0.4-1 cm long, 0.3-0.4 cm wide (Radford et al. 1968). 

Wetland status: FAC. 

Frequency in NYC: Very infrequent. 

Origin: Native. 

Habitat: Open woods, fields, disturbed sites.