Comprehensive DescriptionRead full entry
DescriptionAnnual herb, to 1 m; branches without spines. Leaves petiolate, broadly deltate, concolorous; simple or 3-5-lobed; base usually cordate in outline but cuneate at the very base. Male capitula terminal on short axillary branchlets. Female capitulum with phyllaries connate around the 2 achenes. Fruit c. 2.3 cm bearing numerous spines with hooked tips.