is one of the smallest monkeyflower species; just a few inches tall, with the corolla around 0.1 inches in diameter. Flowers are attached by a pedicel of up to 0.3 inches - longer than the ribbed calyx, which is formed of five equal-length lobes, fused almost to the top, lighter colored between the ribs. The corolla is yellow with reddish patches at the center, and not radially symmetric. Pedicels become somewhat twisted at the fruiting stage.
Leaves are oval towards the base, more linear higher up the stem; they have a midvein and one pair of side veins. Upper leaves are sessile, while lower stem leaves are attached by short stalks. Stems, calyces and leaves have a covering of very short, glandular hairs.