Chamaesyce Gray
Stipules present, distinct, interpetiolar Chamaesyce
Leaves 4–8 mm long, elliptic, ovate or ovate-oblong, opposite, in 2 ranks, often bluish green. Plants mostly less than 30 cm across. Cyathia solitary, axillary. Involucral glands red with a pink or white appendage. Fruit 2 mm long
Capsule with a fringed appendage at the base. Seeds smooth. Widespread. Open communities; pastures. Fl. spring–summer Chamaesyce dallachyana
Capsule without a fringed appendage at the base. Seeds wrinkled. Widespread. Open communities. Fl. spring–summer. Caustic Weed Chamaesyce drummondii