Reyesia is a small genus of four species of flowering plants belonging to the subfamily Cestroideae of the nightshade family Solanaceae.

Historically, the species now placed in Reyesia have been held by some authors to belong to Salpiglossis, but are currently placed in a genus of their own by virtue of their tiny flowers and peculiar androecium (see description below).

Flowers solitary, terminal, small, pedicels 10–20 mm, calyces 2–4 mm, strongly glanduliferous – like the pedicels – with five short, equal, acute teeth; corolla zygomorphic, 6–13 mm, tubulose to funnel-shaped, violet, blue or yellow, with or without violet stripes, lobes five, of which four equal (the remaining anterior lobe slightly larger), lobes much shorter than tube; stamens included and somewhat curved towards the larger anterior corolla lobe; stamens four, in two pairs of different lengths, the posterior pair fertile with larger anthers, the lateral pair with smaller anthers, fertile (in R. chilensis) or sterile (in R. parviflora).

Capsules small (circa 3–4 mm) hidden in bases of persistent calyces; seeds between two and twenty-five in number, depending on species.

[3][7] Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (8 mars 2014).