Coriander is a delicately branched annual that reaches a height of 2-3 ft (0.6-0.9 m) with a spread of 1-2 ft (0.3-0.6 m). It often becomes top heavy and falls over, sprawling along the ground and sending up branches like so many new plants. The lower leaves of coriander are lobed, about 1-2 in (2.5-5.1 cm) across, and look a little like Italian parsley (Petroselinum crispum). The upper leaves are finely dissected into linear segments and almost fernlike. The white or pink flowers are tiny and borne in numerous compound umbels (flat-topped clusters in which the flower stems arise from a single point). The flower clusters are only about 1-2 (2.5-5.1 cm) across, but are so abundant that the whole plant is quite showy. The seeds are contained in spherical yellowish brown pods that are ribbed and rough textured, and about an eighth inch in diameter.
Coriandrum sativum Plant Profile - Floridata, http://www.floridata.com/Plants/Apiaceae/Coriandrum%20sativum/673 (accessed January 27, 2017).