Myosotis monroi

Myosotis monroi is a species of flowering plant in the family Boraginaceae endemic to the South Island of New Zealand. The species was described by Thomas Cheeseman. Plants of this species of forget-me-not are perennial and erect, and have ebracteate inflorescences with cream or white corollas.

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Myosotis monroi plants are small rosettes that often cluster together into tufts or loose clumps. The rosette leaves have petioles 3–56 mm long. The rosette leaf blades are 10–50 mm long by 4–13 mm wide (length: width ratio 1.7–5.2: 1), oblanceolate or narrowly obovate, widest at or above the middle, with an obtuse, often apiculate apex. The upper surface of the leaf is densely covered in straight, appressed, antrorse (forward-facing) hairs that are oriented parallel to the mid vein, while lower surface is usually glabrous except for a few isolated hairs. Each rosette has 1–6 erect, branched, forked, ebracteate inflorescences that are up to 22 cm long. The cauline leaves on the lower part of the inflorescence are similar to the rosette leaves, and decrease in size toward the tip. There can be up to 28 flowers in each inflorescence. Although the flowers are borne on short pedicels, they do not have bracts. The calyx is 3–6 mm long at flowering and 3–8 mm long at fruiting, lobed to about half of its length, and densely covered in short to long, forward-facing hairs, some of which are hooked. The corolla is cream or white (or yellow), 4–7 mm in diameter, with a cylindrical tube, petals that are rounded and flat, and small yellow scales alternating with the petals. The anthers are fully exserted, extending past the scales. The four smooth, shiny, black nutlets are 1.8–2.4 mm long by 1.1–1.2 mm wide and narrowly ovoid in shape. The chromosome number of M. monroi (as M. laeta) is 2n = 46. It flowers and fruits from October to April, but the main flowering and fruiting period is November to January.