- bearing an umbel or umbels.
- belonging to the Umbelliferae, the parsley family of plants.
- of, relating to, or belonging to the Umbelliferae, a family of herbaceous plants and shrubs, typically having hollow stems, divided or compound leaves, and flowers in umbels: includes fennel, dill, parsley, carrot, celery, and parsnip
- designating any other plant bearing umbels
