Families

Ulmaceae

This is the elm family of the nettle order (Urticales), with 16 genera and about 2000 species of trees and shrubs, distributed primarily throughout temperate regions. Members of the family have watery sap, and its leaves alternate along the stem. The leaves usually have toothed edges and often are lopsided at the base. The flowers lack petals. Male and female flowers are borne together or apart on the same plant. The fruit, a samara, may be winged, fleshy, or nutlike.

Umbelliferae (Apiaceae)

Umbelliferae is a family comprised of about 2850 species in some 420 genera mostly of Herbs, some shrubs and a few trees.  Flowers aggregated in inflorescences; in umbels (nearly always), or in heads. Leaves are small to large; alternate, or alternate and opposite (the upper sometimes more or less opposite); ‘herbaceous’ (usually), or leathery (occasionally), or fleshy (rarely).  The Fruit is a non-fleshy schizocarp. Seeds have oily endosperm and a well differentiated straight embryo. 

Urticaceae

The nettle family comprising about 45 genera and over 1000 species of herbs, shrubs, small trees, and a few vines, distributed primarily in tropical regions.  The leaves are varied and the sap is usually watery. The small, greenish flowers often form clusters in the leaf axils. Both male and female flowers may be borne on the same plant. The curled stamens of the male flowers straighten quickly as the flowers open, releasing the pollen. The dry, one-seeded fruit often is enclosed by the outer whorl of the flower cluster.