plural of swamp orchid

Any orchid of the genus Phaius, commonly found in swamps.

an American beggar-ticks, Bidens connata, common in wet pastures and meadows

Marsh thistle.

plural of European swamp thistle

The tree Quercus bicolor.

plural of swamp white oak

Quercus michauxii, native to piedmont and lowlands from New Jersey to northern Florida, Texas, and southern Indiana.

plural of swamp chestnut oak

pin oak