Wild Celery

Apium graveolens L. Sp. PI. 264. 1753
Seseli graveolens Scop. Fl. Cam. ed. 2. 1:215. 1772.
Slum Apium Roth. Fl. Germ. 1: 128. 1788.
Sium graveolens Vest, Man. Bot. 517. 1805.
Apium vulgare Bubani, Fl. Pvren. 2: 344. 1900.
Selinum graveolens E. H. L. Krausc in Sturm, Fl. Deuts. ed. 2. 12: 38. 1904.
Celeri graveolens Britton in Britt. & Brown, 111. Fl. ed. 2. 2: 660. 1913.
( inum graveolens K.-Pol. Bull. Soc. Nat. Mosc. II. 29: 199. 1916.
Plants terrestrial, perennial, the stems erect or ascending, about 5-15 dm. high, from a taproot, not rooting at the nodes; leaves oblong to obovate in general outline, excluding the petioles 7-18 cm. long, 3.5-8 cm. broad, pinnate with few pairs of ovate to suborbicular leaflets, 2-4.5 cm. long, 2-5 cm. broad, usually 3-lobed to near the middle; petioles 3-26 cm. long; cauline leaves frequently cuneate, sometimes laciniate; umbels sessile or short-pedunculate, the peduncles up to 1.2 cm. long; involucre wanting; involucel wanting; rays 7-16, 0.7-2.5 cm. long; pedicels 1-6 mm. long; calyxteeth minute but evident; carpophore shortly bifid; fruit suborbicular to ellipsoid, about 1.5 mm. long, 1.5-2 mm. broad.
Type locality: "In Europae humectis praesertim maritimis." collector unknown.
Distribution: Eurasia; adventive throughout the United States, Mexico, Central America, and the West Indies.