Euphorbia L.

Stipules minute or absent Euphorbia
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Floral leaves green or yellowish
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Most leaves usually more than 4 cm long
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Stem leaf margins entire. Leaves up to 16 cm long, oblong-lanceolate, sessile, decussate. Umbels with 2–5 rays; floral leaves large, ovate-lanceolate. Involucral glands with short blunt horns. Stout, glaucous biennial. Widespread. Weed. Introd. from Europe and Asia. Fl. summer. Caper Spurge Euphorbia lathyrus
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Stem leaf margins finely toothed. Leaves up to 60 mm long; linear to oblong-elliptic; alternate. Floral leaves ovate 8–20 mm long. Perennial with 2 or more stems up to 80 cm high. Occasionally naturalized. Introd. from Africa Euphorbia depauperatapubescens