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See list of 2 species in this genus
  • 1a. Leaf blades glabrous; axis of capitulescence glabrous; petioles 3–10 mm long; peduncles 1–3 mm long; plants suffrutescent perennials of coastal marshes and shores
  • 1b. Leaf blades adaxially strigose-scaberulous; axis of capitulescence pubescent; petioles 5–20 (–30) mm long; peduncles 0–1 mm long; plants annual of moist, often disturbed, 
inland soils

 Show photos of:   Each photo represents one species in this genus.