Euphorbia L.

Floral leaves green or yellowish

Leaves usually less than 4 cm long, obovate to obovate-cuneate, never decussate

Cauline leaves petiolate, not markedly different from leaves on fertile stems

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Involucral glands with horns at each end, crescent shaped. Umbels of 2–3 repeatedly forked rays. Stems glabrous. Leaves obovate, 7–15 mm long. Herb up to 60 cm high. Widespread. Common weed in gardens and waste ground. Introd. from Europe and Asia. Fl. most of the year. Petty Spurge Euphorbia peplus

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Involucral glands entire, slightly curved. Umbel of 5 long rays which are at first 3-forked and then 2-forked. Stems hairy. Leaves obovate-cuneate, 1–4 cm long. Erect annual up to 60 cm high. Coast and adjacent plateaus; Cumberland Plain. Waste ground. Introd. from Europe and Asia. Fl. summer. Sun Spurge Euphorbia helioscopia