Plants (0.2-)0.3-2(-3) ×0.5-5 dm. Leaves: petiole inconspic-uous; blade spatulate, (1-)2-5 × (0.2-)0.3-1.2(-2) cm. Inflor-escences: bracts 3, spreading to nearly erect, perfoliate, becoming 1-sided and weakly perfoliate apically, connate for nearly their entire length, orbiculate, 0.5-1(-2) cm, apex acute to obtuse; awns 0.3-1.2(-1.5) mm. Involucres 1, 4-angled, distinctly ribbed and usually corrugate, often strongly ventricose, 3-5(-6) mm; teeth 4, spreading to strongly divergent, glandular or strongly hirsute; awns straight, (0.3-)0.5-1.2 mm. Flowers 1; perianth 1.5-3(-3.5) mm, pubescent abaxially; tepals narrowly oblanceolate, erose or fimbriate apically, infrequently entire or 2-lobed; stamens 9; filaments 1-2.5(-3) mm; anthers 0.5-0.8(-0.9) mm. Achenes 2-3 mm. 2n = 38, 40.
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