Glossostigma drummondii

Description

Tiny glabrous aquatic or terrestrial annual, sometimes forming mats. Leaves clustered to widely spaced, 2–10(–15) mm long; lamina recurved, thick, narrow-elliptic to almost circular, 0.5–3 mm long, 0.5–2 mm wide, 0.2–0.3(–0.8) times the length of the petiole, apex obtuse, base abruptly dilated, midvein obscure; petiole 2–5 mm long, flat, often white. Pedicels erect, 3–10(–20) mm long. Calyx campanulate or broadly so, 1–2 mm long, green, often with black lines, with 1 large and 2 smaller teeth; corolla 2-lipped, white or blue or pink with a white to yellow rim, lobes 5, c. 1 mm long, with glabrous margins; stamens 4, in pairs of unequal length, included in the corolla; stigmatic lobe elliptic; seeds (0.4–)0.5–0.8 mm long. Flowers Aug.–Nov.