Euphorbia L.
Monoec. herbs with milky acrid sap. Lvs us. alt., stipulate. Fls nude, in compound cymes, subumbellately arranged, grouped within a cyathium; the small teeth alternating with conspicuous glands. ♂ ∞, of solitary stamens; ♀ a pedicelled 3-celled ovary; styles 3, stigmas often bifid; ovules 1 per cell. Fr. a 3-valved capsule. Subcosmopolitan genus of about 2000 spp., as us. understood. The N.Z. sp. also occurs in Norfolk Id.