| serrulate | (adj) minutely serrated |
| bird's-eye bush | (n) shrub with narrow-elliptic glossy evergreen leaves and yellow flowers with leathery petaloid sepals, Syn. Ochna serrulata |
| cascade penstemon | (n) whorls of deep blue to dark purple flowers at tips of erect leafy stems; moist places from British Columbia to Oregon, Syn. Penstemon serrulatus |
| oriental cherry | (n) ornamental tree with inedible fruits widely cultivated in many varieties for its white blossoms, Syn. Japanese flowering cherry, Japanese cherry, Prunus serrulata |
| ribbon fern | (n) fern of North Africa and Azores and Canary Islands, Syn. spider fern, Pteris serrulata |
| rocky mountain bee plant | (n) plant of western North America having trifoliate leaves and white or pink spider-shaped flowers; sometimes used as an ornamental, Syn. Cleome serrulata, stinking clover |
| smooth alder | (n) common shrub of the eastern United States with smooth bark, Syn. Alnus serrulata, hazel alder |