Salt pannes and pools

High salt marsh Briefly flooded, very shallow with a moderate amount of vegetation usually dominated by arrow-grass (Triglochin maritimum), with the deeper sections possibly remaining unvegetated.

Frequent herbs include three-square rush (Scirpus pungens), stout bulrush (S. robustus), arrow-grass, marsh creeping bent-grass (Agrostis stolonifera), salt-loving spike-rush (Eleocharis halophila).

Growing with less frequency are red fescue (Festuca rubra), New York aster (Symphyotrichum novi-belgii) silverweed, saltmeadow cordgrass (Spartina patens), and salt marsh rush.

Saturated, mud dominated pannes are occasionally found in the transition zone next to forested uplands where they are shaded by overhanging tree branches thus inhibiting evaporation.

This is the preferred habitat for the uncommon seaside crowfoot (Ranunculus cymbalaria), where prostrate colonies may form small patches over the soil surface.

Other graminoids and forbs scattered across the mud, or more often around the panne edge, include Virginia wild rye (Elymus virginicus), chaffy salt sedge (Carex paleacea) seaside goldenrod (Solidago sempervirens), marsh creeping bent grass, New York aster and smooth cordgrass.