Xanthium cylindricum

Xanthium cylindricum Milisp. & Sherff, Field Mus Publ. Bot
4: 4. 1918.
Stem scabrid, probably 0.5-1.5 m. high; leaves large, 1.3-2.5 dm. long, the petioles about equaling the blades; blades very similar to certain leaves of Hibiscus militaris Cav., subdeltoid ovate, 3-lobed (and almost hastate) or 5-lobed, dentate, cordate or almost truncate at the base, membranaceous, scabrous or to the touch almost smooth, clothed with minute appressed rigid hairs; body of the fruic cylindric-fusiform, reddish-chestnut in color, dotted with minute glands, otherwise glabrous, 1.4-1.6 cm. long and 4-5 mm. thick; beaks arcuate, hooked at the apex, glabrate, 4—5 mm. long; prickles slender, reddish, hooked at the apex, glabrate, 2.5-3.5 mm. long.
Type locality: Chimney Rock to Hendersonville, North Carolina.
Distribution: North Carolina.