Coriander

Coriandrum sativum L. Sp. PL 256. 1753
Selinum Coriandrum E. H. L. Krause in Sturm, Fl. Deuts. ed. 2. 12: 163. 1904.
Plants 2-7 dm. high; basal leaves ovate in general outline, excluding the petioles 3-15 cm. long, 2-10 cm. broad, simple and ternately or pinnately lobed, or pinnate, the leaflets flabelliform, cuneate at the base, 1-2 cm. long, 5-10 mm. broad, variously toothed or incised; petioles 2-15 cm. long; cauline leaves pinnately dissected, the ultimate divisions of the upper leaves linear to filiform, 2-15 mm. long, 0.5-1.5 mm. broad, obtuse, entire; peduncles 3-10 cm. long, or occasionally abortive; involucre wanting, or of a solitary bract; involucel dimidiate, of a few linear bractlets, 2-4 mm. long; rays 2-8, 1-2.5 cm. long; pedicels 2-5 mm. long; calyxteeth ovate-lanceolate, unequal, the outer up to 1 mm. long; petals white or rose, the outer radiant; fruit 1.5-5 mm. in diameter.
Type locality: "In Italiae agris," collector unknown.
Distribution: Mediterranean Region; widely adventive in the United States, Mexico, Central America, and the West Indies.