Chloropyron maritimum subsp. palustre
Syst. Bot. 34: 188. 2009.
Stems 10–30 cm, puberulent and pilose or glabrescent; branches absent or ascending, distals not overtopping central spike. Spikes: bract margins entire or slightly notched. Flowers: corolla-tube and abaxial lip white to pale-yellow, galea pink or purple-red. Seeds 10–20, 2–3 mm. 2n = 30.
Phenology: Flowering May–Oct.
Habitat: Coastal salt marshes.
Elevation: 0–10 m.
Subspecies palustre grows just above the high tide line in salt marshes from Coos County, Oregon, to San Luis Obispo County, California.