Veronica catenata, the pink water speedwell, is a species of flowering plant in the family Plantaginaceae.

[4] A perennial branching herbaceous plant with erect and creeping stems, the latter rooting freely at the nodes.

[5] The leaves are opposite and decussate (arranged alternately at right-angles), and semi-amplexicaul (clasping the stem at their bases).

Aerial leaves are dark green above and paler beneath, and more-or-less lanceolate in shape, narrowing gradually from a wide base to a pointed tip.

[5] The fruits are heart-shaped capsules, 2-3 mm across, which open into 4 valves containing numerous pale brown seeds that are flat on one side, rounded on the other.