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Eriocaulon inundatum—Last scientifically collected in Senegal in 1943, this pipewort’s only know habitat has since been destroyed by salt mining.

Eriocaulon inundatum — Last scientifically collected in Senegal in 1943, this pipewort's only know habitat has since been destroyed by salt mining.

Another state endangered plant is Parker’s pipewort, native to river and stream habitats and threatened by dams, agricultural clearing and pollution.

There, in that corner of Echo Lake, grew the thickest patch of pipewort, with its small, round, grayish-white, mushroom-shaped tops on long, slender stems.

There also I have found, in considerable quantities, curious balls, composed apparently of fine grass or roots, of pipewort perhaps, from half an inch to four inches in diameter, and perfectly spherical.