seven-angle pipewort, white buttons
[Cespa aquatica Hill, Eriocaulon articulatum (Huds.) Morong, Eriocaulon pellucidum Michx., Eriocaulon pumilum Raf., Eriocaulon septangulare With., Nasmythia articulata Huds., Nasmythia septangularis (With.) Mart.]
Etymology: Eriocaulon: Greek erion for "wool" and caulos for "stalk" referring to the wool at the base of the scape
Plants: erect, perennial, semi-aquatic, 1"-8" tall; roots unbranched with closely spaced segments
Leaves: in a basal rosette, green, translucent, long, tapering, over-winter in favorable conditions
Flowers: white, 3-parted; inflorescence a 1/4" wide, dense, button-like head on a slightly twisted stalk with 5-7 vertical ridges; blooms June-Sept.
Habitat: bogs, shores, shallows, soft water to 7' deep; in wet, sandy, mucky soil
Conservation Status: Native