Eriocaulon parkeri B.L.Rob.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Much like no. 1 [Eriocaulon aquaticum (Hill) Druce]; scapes 4–5-ridged, tending to be straight, often 2–4 from the same rosette; heads a bit smaller, mostly 3–4 mm thick, hemispheric, the outer invol bracts very pale, dull gray or stramineous, tending to remain ascending even at maturity; perianth and receptacular bracts with few or no hairs; 2n=48. Tidal flats and muddy shores, often submerged, in fresh to slightly brackish water; Me. and Que. to Mass. and c. N.Y., and s. near the coast to N.C. July–Oct.