Gomphrena martiana

Plants perennial, not cespitose, 0.4-1.5 dm; roots unknown. Stems erect, sparsely pilose. Leaves: petiole 0.4-1.4 cm; blade green, elliptic, 2.3-3.5 × 0.7-1 cm, apex acute, pilose. Inflorescences: heads white, subglobose, 7-11 mm diam., not subtended by 2 leaves; bractlets white, slightly ridged abaxially, not crested. Flowers: tube glabrous; perianth lobes white, lanceolate, 3.2 mm, chartaceous, margins entire, apex acuminate. Utricles not seen. Seeds not seen.

Flowering fall. Wool-waste areas; 30 m; introduced; N.Y.; South America.