Deep-rooted perennial, 2–6 dm, the herbage loosely and rather copiously arachnoid when young, subglabrate or merely hirsute in age; lvs crowded (internodes commonly less than 1 cm), narrow, sessile, 6–15 × 1–2.5 cm, densely spiny-margined, coarsely toothed or shallowly lobed, and often finely toothed as well; heads (solitary) several, terminating short branches from near the summit, only shortly or scarcely pedunculate, purple; invol 2.5–4 cm, the middle and outer bracts with short, mostly erect spine-tip, the glutinous dorsal ridge poorly developed or wanting; inner bracts looser and merely attenuate; achenes 3.5–4 mm; 2n=30. Dry, sandy soil, especially in sand-hills and pine-barrens; se. Va. to Ga. June–Sept.
Home