pillwort
(ˈpɪlwɜːt)
[f. pill n.2 + wort: so called from its small globular involucres.]
Any plant of the cryptogamous genus Pilularia, esp. the British species P. globulifera.
| 1861 Miss Pratt Flower. Pl. VI. 156 Pill-wort. Capsules globular, 4-celled, each cell containing two different kinds of bodies. 1864 T. Moore Brit. Ferns, etc. 105 The pillwort or pepper-grass..is a small creeping plant with grassy leaves, growing usually in the shallow margins of lakes and pools where it is occasionally overflowed; but sometimes occurring entirely submerged. |