| allionia | (n) small genus of chiefly American herbs, Syn. genus Allionia |
| nyctaginaceae | (n) a family of flowering plants of the order Caryophyllales, Syn. family Allioniaceae, Allioniaceae, family Nyctaginaceae, four-o'clock family |
| trailing four o'clock | (n) trailing plant having crowded clusters of 3 brilliant deep pink flowers resembling a single flower blooming near the ground; found in dry gravelly or sandy soil; southwestern United States and Mexico, Syn. trailing windmills, Allionia incarnata |
| Allionia | n. |