Texas Prairie Parsley

Polytaenia texana (Coult. & Rose) Math. & Const. Bull. Torrey Club 68: 123. 1941.
Polytaenia Nutlallii var. texana Coult. & Rose, Contr. U. S. Nat. Herb. 7: 192. 1900. Pleiotaenia Nuttallii var. texana Coult. & Rose. Contr. U. S. Nat. Herb. 12: 448. 1909. Phanerotaenia texana St. John, Rhodora 21: 1S2. 1919.
Plants 5-8 dm. high; leaves ovate or oblong in general outline, excluding the petioles 8-13 cm. long, 8-10 cm. broad, ternate-pinnate, the leaflets broadly ovate to oblong, 2-4 cm. long, 1-2.5 cm. broad, obtuse at the apex, cuneate at the base, sessile, distinct or confluent; petioles S-10 cm. long; upper cauline leaves ternate with broadly cuneate divisions and sheathing petioles; peduncles 1-5 cm. long; bractlets 2-5 mm. long; rays 10-15, subequal, 1-2.5 cm. long; pedicels 2-6 mm. long; fruit 9-1 1 mm. long, 6-7 mm. broad, the dorsal ribs filiform, the lateral broadly corky-winged, the wings broader but thinner than the body; oil-tubes distinct, solitary in the intervals and 2 on the commissure.
Type locality: Near Industry, Texas, Wurzlow. Distribution: Southern Texas (Cory 20,267, Heller 1669).

Polytaenia texana, commonly known as Texas prairie parsley, is a species of flowering plant in the carrot family (Apiaceae). It is native to Texas and Oklahoma in the United States.