Euphorbia tirucalli L.

Unarmed, succulent shrub to 5 m, or a small tree to 12 m, with brittle succulent branches which are often whorled, c.7 mm thick, green with fine longitudinal white striations. Leaves few, linear-lanceolate to narrowly obovate, fleshy, present only on new growth and quickly deciduous. Cymes 2-6, congested at apices of branchlets, forking 2-4-times, producing cyathia, these usually either all male or all female. Cyathium c.3 × 4 mm; glands to 1.5 × 2 mm, 5, subspherical to transversely elliptic, bright yellow; lobes c.0.5 mm, triangular. Capsule c.8 × 8.5 mm, subspherical, glabrescent, exserted on a tomentose pedicel. Seeds 3.5 × 2.8 mm, ovoid, smooth.