Bishopsweed

Ammi majus L. Sp. PL 243. 1753
Apium Ammi Crantz, Stirp. Austr. 3: 109. 1767.
Apium Ammi-majus Crantz, Class. Umbell. 103. 1767.
Selinum ammoides E. H. L. Krause in Sturm, Fl. Deuts. ed. 2. 12: 43. 1904.
Carum majus K.-Pol. Bull. Soc. Nat. Mosc. II. 29: 198. 1916.
Erect, branching annual, 2-8 dm. high, the inflorescence scabrous; leaves oblong in general outline, excluding the petioles 6-20 cm. long, 5-14 cm. broad, ternate or pinnate, the leaflets lanceolate, obtuse to acute at the apex, cuneate at the base and somewhat recurved on the rachis, 10-15 mm. long, 5-20 mm. broad, setulose-serrate with minute, subequal teeth; petioles 3-13 cm. long; cauline leaves bipinnate with linear divisions, the uppermost greatly reduced; peduncles 8-14 cm. long; involucral bracts exceeding the rays; involucel of numerous linearacuminate, scarious-margined bractlets, spreading to reflexed at maturity and slightly shorter than the pedicels; rays 50-60, subfiliform, 2-7 cm. long, spreading to ascending in flower, bug spreading in fruit, somewhat scabrous; pedicels numerous, filiform, unequal, 1-10 mm. lont, spreading to ascending; carpophore bifid to the base; fruit oblong, 1.5-2 mm. long, 1 mm. or less broad. Type locality: "In Europa australi." collector unknown.
Distribution: Eurasia; sporadically introduced; Newfoundland. Pennsylvania. South Dakota. Texas. Oregon, California. Tamaulipas, Bermuda, and Martinique.