Philadelphus inodorus common mock orange Hydrangeaceae PHIN(*); R, cl, d;

Philadelphus inodorus.© Copyright Bobby Hattaway.discoverlife.org

Philadelphus inodorus.© Copyright Bobby Hattaway 2011.discoverlife.org (Accessed 5/2014).

Philadelphus inodorus is a shrub to 3 m tall, colonial from root sprouts, older bark grooved, shreddy, pale, brown, branching opposite, stems arching, rather weak, brittle, young twigs brown, leaf scars horse-shoe shaped, with winter bud in center, vein scars three. 

Leaves opposite to 7 x 3.5 cm, margin toothed to entire, egg-shaped to oblong. 

Flowers white, odorless, stamens yellow, numerous, 4-5 cm wide, regular, petals 4, calyx lobes 4, from an enlarged base (hypanthium), 1-4 flowers per cluster. 

Fruit dry, a 4-parted capsule with numerous tiny seeds (Rehder 1990).

Wetland status: NL. 

Frequency in NYC: Very infrequent. 

Origin: Mountains of PA south to Al. 

Habitat: Escaped from cultivation. Less frequent than P. coronarius