Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
An inconspicuous annual of bare mud or wet sand on shores, river banks, marsh and pond margins, interdunal flats, borrow pits, and old forest trails; thriving on exposure after lowering of water levels and seldom seen in times of high water. (The seeds are evidently dispersed or rejuvenated from seed banks by fluctuations in water level.)
A few specimens from the southern counties of the Lower Peninsula are var. anagallidea (Michx.) Cooperr., with slender pedicels exceeding the short, broad somewhat clasping subtending leaves. Plants with pedicels shorter than the leaves, which are ± tapered to their bases, represent var. dubia. The two have sometimes been regarded as distinct species, but intermediates seem numerous.