Texas Spreadwing

Eurytaenia texana T. & G. Fl. N. Am. 1 : 633. 1840
Eurytenia macrophylla Buckl. Proe. Acad. Phila. 1861: 455. 1862.
Plants 3-12 dm. high, scaberulous in the inflorescence or glabrate; leaves ovate in general outline, excluding the petioles 4-10 cm. long, 2-5 cm. broad, lobed or pinnatifid with obtuse, crenate to serrate lobes; petioles 2-5 cm. long; cauline leaves pinnately or ternate-pinnately dissected, the divisions oblong-lanceolate to linear or even filiform, sharply serrate to entire, the terminal often elongate; peduncles 4-15 cm. long; involucre of about 5 3-cleft bracts, 5-10 mm. long, scarious-margined toward the base; involucel of several bractlets like the bracts; rays 8-15, spreading-ascending, unequal, 1.5-8 cm. long, scaberulous; pedicels 5-8 mm. long, scaberulous; fruit orbicular to ovoid, 4-6 mm. long, minutely scaberulous, emarginate at the apex, strongly compressed dorsally, the dorsal ribs filiform or very narrowly winged, the lateral ribs broadly thick-winged, the wings narrower than the body, distinctly nerved on the commissural side, their margins thin and contiguous; oil-tubes large, flattened, solitary in the intervals, 2 on the commissure; seed-face plane.
Type locality: Austin, Texas, Drummond.
Distribution: Oklahoma to eastern Texas (Cory 13,883, 14.868, Hall 256).